Briggs & Stratton 540cc 21 HP 331877-2371 $459.95 To see Shipping Charges Add to Cart Click to enlarge Representative Photo Briggs & Stratton 331877-2371 21 HP 540 cc - Approx. in) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton. This engine is equipped with float type carburetor and an electronic ignition system. Check that the retainer is fully engaged in the valve stem groove. Step 2: After removing the spark plug and securing the spark plug lead away from the spark plug, adjust the jaws of the, Step 3: Push the tool in until the upper jaw slips over the upper end of the spring. Resize if out of . Check your. Exhaust .005-.007. 1.8L, 2.0L and 2.5L Engines The 1.8L, 2.0L and 2.5L engines utilize automatic hydraulic lash adjusters to maintain proper valve lash at all times. If there's too little valve clearance, the valves won't fully close, causing excessive heat, and the engine will lose power. Some of the common settings for BPS motors:Stock Rockers- .004-.006BPS Rockers (stock Cam) .005-.006BPS Rockers (BPS Cam) .006-.008Eagle Rockers - .006-.008First generation 45Mag Rockers (nothing printed on them)- .008-.010You set the valves on acoldengine, remove your valve covers (10mm), spark plugs, and engage the clutch (if you are turning the prop to turn the crank). Go with 0.005 setting (or applicable to your rockers). Learn about the latest products, step-by-step instructions on how to locate your engine model number and more. To find basic small engine specs like torque, fuel & oil type, filter or cylinder info, check out specific product pages for your, The complete source of specification information would be your engine's. See the video below on how to perform a valve lash adjustment. Intake valves let air in, whereas exhaust valves let air out. Valve. on: May 21, 2014, 11:07:31 am . Briggs & stratton car engine operator's manual Oil Recommendations Maintenance Carburetor Adjustment Specifications Troubleshooting Brand: Briggs & Stratton | Category: Engine | Size: 2.34 MB Briggs & Stratton 21000 Series Operating & Maintenance Instructions (21 pages) Briggs and stratton engine operating & maintenance instructions * With Valve Springs Installed. We also use third-party cookies that help us analyze and understand how you use this website. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. looking for valve specs for a 21 hp single cylinder intake and exhaust please and thank you. It is stating to bring piston all the way . You also have the option to opt-out of these cookies. Clearances differ for the two valves and typically range from . The OHV model came in the twin-cylinder engine as well, and both are used in bigger equipment like garden tractors, riding lawnmowers and generator sets. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Too much clearance means the valves will likely clatter and, over the long term, cause damage to the valves, camshaft lobes or rocker arms. The cylinder bore is 94.0 mm (3.7 in) and the piston stroke is 77.8 mm (3.06 in). Step 4: Adjust the clearances as required by turning the rocker screw. Can I get the valve setting on a Briggs 25 hp v twin . http://outdoorpowerinfo.com/engine_specs/briggs_valve_gaps.asp, https://drive.google.com/file/d/0B6NaqjIxWV1ybEN0LWo3azl6OUU/view, https://www.youtube.com/watch?v=tceKAAViC1c. Step 6: Use your thumbs to press in on the spring retainer and valve spring over one of the valves. Replace the valve if the margin measures less than 0.016 inches (0.4 mm). The consent submitted will only be used for data processing originating from this website. Lately it has developed a loud tapping noise when running. This engine produced 21.4 PS (15.7 KW; 21.0 HP) at 3,600 rpm of horsepower. You could also put a wooden dowel in the spark plug hole that will rise till you get the piston to past TDC. Step 1: With each valve installed in its proper guides in the cylinder, turn the crankshaft (clockwise as viewed from the flywheel end of the crankshaft) to top dead center. Step 1: Check that valve stems and guides are free of debris and burrs. Knowing your small engine model number also provides basic specifications such as valve settings, bore, stroke, etc. After the exhaust valve closes put your finger over the plug hole and when you feel air coming out (compression stroke) then go slow. Step 4: Remove the rocker arm bolts with a socket wrench or nut driver. Step 4: Examine the surfaces of the valve face and seat. The engine features a 1-inch-diameter crankshaft, cast-iron sleeve, 3-quart fuel tank and a traditional recoil pull starter. Lap the valve just enough to create a consistent and even pattern around the valve face. Briggs stratton valve clearance chart Get the up-to-date briggs stratton valve clearance chart 2023 now 4.5 out of 5 25 votes 44 reviews 23 ratings 15,005 10,000,000+ 303 100,000+ users Here's how it works 02. (15-19 Nm). How to Remove Engine Valves for Inspection, Briggs & Stratton Authorized Dealer near you. Furthermore, I initially created this video to address the problem of compression lock regarding B\u0026S engines. Then, make certain there is NO lubricant on the ends of the valve stems or tappets. Step 3: If clearance is insufficient, remove the valve and grind or file the end of the valve stem square to increase the clearance. It there are stubborn deposits, clean the valve with a wire brush and solvent, soaking the parts for several hours if necessary, to loosen hardened grit. What is the valve clearance for my small engine? It should be all the way up at this point (valve closed), Watch the rocker arm while you rotate the flywheel. Step 2: Brush the valve stem with valve stem lubricant. Recommended valve-to-piston clearance is generally 0.080-inch minimum on the intake side and 0.100-inch minimum for the exhaust valve. Manage Settings 3. 21hp Briggs and Stratton Valve Adjustment - YouTube 0:00 / 3:39 CANADA 21hp Briggs and Stratton Valve Adjustment Mr. Shop 12 subscribers Subscribe 9 2.7K views 1 year ago This. If its not set to spec, the valves are not opening and closing at the correct times and could be throwing un-burnt fuel into the muffler (after fire). Remember that the retainers key-shaped slot will help you slip the retainer off the valve stem, even when the retainer is hidden from your view by the valve spring compressor. Number of piston rings (compression / oil). Intake valve head is larger than exhaust valve head. Step 3: Lubricate the inside diameter of each valve stem seal (if equipped) with engine oil and install the seals on the valve stems. Replace either valve spring if it is bent. The 23, 35, and 36 HP valve lash setting range is 0.004 to 0.006, yours may be different so check your owners manual. Step 4: Adjust the clearances as required by turning the rocker screw. The thing that is getting me is the valve adjustment procedure. In 1953, Briggs & Stratton developed the first lightweight aluminum engine for lawn and garden applications. Only show this user. Dochub is a perfect editor for modifying your forms online. Press them into place. Modified motors may also have different settings. Loosen the 13mm nut on the rocker adjuster on the rocker arm and use a Torx T40 driver or metric allen wrench (depending on your adjuster type) to adjust the clearance. I change oil and maintain oil levels carefully. Required fields are marked *. Since lapping valves removes a small amount of material from the surfaces of the valve face and valve seat, you may need to adjust the tappet clearances - the spacing between the valve stem and the tappet - after lapping and reinstalling the valves. Out of these cookies, the cookies that are categorized as necessary are stored on your browser as they are as essential for the working of basic functionalities of the website. OZ. Hard to read more Curtis B. Look in your spark plug hole with a flashlight and turn the shaft till you see the cylinder rise to its max point. Engine Briggs & Stratton 405700 Operator's Manual Engines model series 405700; 406700; 407700; 445700 (12 pages) Engine Briggs & Stratton 405700 Operator Owner's Manual (8 pages) Engine Briggs & Stratton 402500 Series Illustrated Parts List Briggs & stratton parts list (10 pages) Engine Briggs & Stratton 406700 Series Operating & Maintenance Manual When doing small engine repair and maintenance, you may need to find specific parts and specifications for your engine. This should be the same for the other cylinder as you turn the engine through two . Any particles that remain can rapidly damage the valves and other engine components. Going to adjust the valves. Type text, add images, blackout confidential details, add comments, highlights and more. Just before the piston reaches top dead center the rocker should go down opening the intake valve approximately 1/8" then come back up closing the valve as the piston hits top dead center. The pattern around the face should be even with the valve head and of equal thickness all the way around. Please note we will ship your items within 1-2 days after we receive your order. Flat heads dont typically have adjustable valves. :confused2: That's a great feature Scrubcadet but regrettably that's not my engine. lbs (8 Nm). Commercial Mowers. Small Engine Specs Specifications for small engines used on a variety of outdoor power equipment SEARCH THIS SITE: Home Page Belts Index Belts Blog Parts Lookup Engine Specs Repairs Index They will normally but the rockers will be moving in the opposite direction of each other. Applications that would be considered for long operational use are: Generators. These cookies will be stored in your browser only with your consent. Gene, Where is the model # on two cylender b/s j/ d mower. Once the lock is off, place a 0.004" feeler guage into the intake's valve lash and turn the 10mm wrench until the valve is very snug against the 0.004" feeler guage. Briggs and Stratton Valve Clearances Intake and Exhaust Clearances for Briggs & Stratton engines used on a variety of outdoor power equipment applications. What type of gas should I put in my lawn mower? We do not provide advice on technical issues related to the engines operation or repair. The feeler gauge should move between the valve and the rocker arm with resistance (like slicing a stick of cool butter with a knife). Feb 21, 2015. This video will help with that. Note: The exhaust valve spring may use thicker wire than the intake valve spring. Zero-turn rear engine riders with electric start, 19hp briggs & stratton with 42" mower, Briggs & stratton engine operator's manual, Briggs & stratton engine operating & maintenance instructions, Fullpower briggs & stratton engine user manual, Briggs & stratton engine illustrated parts list, Briggs & stratton engine operating instruction, Briggs & stratton engine operating and maintenance instructions, Briggs & stratton automobile parts - engine user manual, Briggs & stratton car engine operating and maintenance instructions, Briggs & stratton car engine operator's manual, Briggs and stratton engine operating & maintenance instructions. If its not set to spec, the valves are not opening and closing at the correct times and could be throwing un-burnt fuel into the muffler (after fire). Number of piston rings (compression / oil). Sign it in a few clicks Draw your signature, type it, upload its image, or use your mobile device as a signature pad. For a better experience, please enable JavaScript in your browser before proceeding. Your email address will not be published. Complete your briggs and stratton engine specs chart form and other papers on your Android device by using the pdfFiller mobile app. Help! Engineers can observe and adjust tappet clearance only when the valves are in a closed position and the engine is cooled at the compression stroke. Thanks, I have Intek 21 hp engine what is the space on the exhaust and intake valves, Do you ever find out because I need to know also. Then, for final tightening, proceed in increments of roughly one-third the final torque. Check your motor's manual to make sure you're adjusting the lash accurately. Loosen the 13mm nut on the rocker adjuster on the rocker arm and use a Torx T40 driver or metric allen wrench (depending on your adjuster type) to adjust the clearance. You can also download it, export it or print it out. October 21, 2019 at 2:24 pm. intake and exhaust specs .003 -.005 Cold . Compression lock is mentioned several times during this video, but was ultimately NOT the reason this engine quit starting. But opting out of some of these cookies may have an effect on your browsing experience. This category only includes cookies that ensures basic functionalities and security features of the website. It has spark compression fresh fuel. I have a 21 HP v-twin vanguard it has a fluttering sound kind of like it is missing. Continue with Recommended Cookies. Use the screwdriver to gauge the piston's range of motion. This because one is cylinder is going throught exhaust and intake cycles while the other is going through its compression and power cycles. Shop Related Maintenance Parts 32 FL. Then, lightly coat the valve stems with valve guide lubricant and insert them in the cylinder head, taking care to place the correct valve in each valve guide. The valve guide may also be worn, but these are only servicable in some of our L-Head engines. Then, lower the valve stem through the spring. Step 2: Wet the end of the lapping tool suction cup and place it on the valve head. Nov 20, 2016 As shown by the chart, consumer demand for portable generators such as hurricanes, that cause power outages (Briggs & Stratton, 2007). Okay intake valve is moving followed by the exhaust.MoreSo let's determine what is the intake valve. If the engine design does not permit the upper jaw to fit over the top of the valve chamber, insert the upper jaw into the chamber over the top of the spring, so that the spring is between the tool's jaws. Modified motors may also have different settings. Step 1: Place the valve spring into the valve spring compressor and rotate the tool's handle until the spring is fully compressed. Coat the rocker arm stud threads with a hardening sealant and install the rocker arm studs, using a socket wrench. Step 2: Insert a narrow screwdriver into the spark plug hole and touch the piston. Step 1: Place the valve spring into the valve spring compressor and rotate the tool's handle until the spring is fully compressed. Briggs & Stratton Intek 21 Gross HP Single Cylinder Air-Cooled 4-Cycle Gas Engine Reliable and durable engine rated in accordance with SAE J1995 Overhead Valve (OHV) Technology More power, less fuel-use & lower emmisions; Runs cooler for longer engine life Full-Pressure Lubrication w/ Spin-On Oil Filter These cookies will be stored in your browser only with your consent. lbs (8 Nm), Rocker Arm Adjuster Lock Nut- 70in. lbs (8 Nm). Once its the correct clearance then hold the adjuster and tighten the 13mm nut. The cylinder bore is 94.0 mm (3.7 in) and the piston stroke is 77.8 mm (3.06 in). We also use third-party cookies that help us analyze and understand how you use this website. The B&S 28M707 engine has an L-head (side valve) design and a vertical PTO shaft. Torque specs: Valve Cover- 70 in. 002 - . Head gasket blowing on one of the heads ive got the same problem , its easy enough to fix. Technician Associate Degree 44,269 satisfied customers I have a 21 HP model 331877 type 1371B1 need to know valve You can smooth out minor scoring and pitting of the valve face and seat to restore a valve's ability to seal the combustion chamber by lapping the valves. Step 3: Check the valve clearance by placing a feeler gauge between the valve head and the rocker arm. The FIRST thing is to adjust the valves. The breakdown of the engine code is as follows: We try to use verified sources and official documentation, however, differences between sources or errors in entering information may occur. They are seated on the valve stems. Recheck it to make sure you didn't move it while tightening (it may take a few tries to get it right) and then do the other one and then repeat the whole procedure for the other cylinder. Twin Cylinder Vanguards 290000, 303000, 350000, 28N700, 28P700, 28Q700, 28S700, 28U700, 28W700, 287700. Without Valve Springs Installed, Intake .006"-.008", Exhaust .009"-.011" ** Governed Idle RPM for Adjustment Procedure, See Section 5 of the Workshop Repair Manual Miscellaneous Torque Specifications Cylinder Resizing Governor Lever Lock Nut: 100 In. 17 Station St., Ste 3 Brookline, MA 02445. We'll assume you're ok with this, but you can opt-out if you wish. 2022 LawnMowerForum.com. The Briggs & Stratton vertical-shaft 12.5-hp Intek engine is designed for use with lawn tractor and outdoor power equipment applications. Find the type of engine valve retainer and follow our step-by-step guide below. Use both thumbs to compress the spring until the valve stem extends through the large end of the keyhole slot. Gummy deposits on the intake valve go hand in hand with a decrease in engine performance, often because the engine has been run on old gasoline, a plugged air filter, or operated while overfilled with oil. Brigg And Stratton 21 hp engine on a 46 inch Sears riding mower. Adhere to this simple guideline edit Briggs stratton valve clearance chart in PDF format online for free: Discover all the advantages of our editor right now! Check the compression release by turning the flywheel the direction of rotation with the spark plug out, Watch the intake valve open and close. Label the bolts if necessary, to ensure proper installation later, since they may be of different lengths. Piston Pin Models 290000 - 352000 17.07 - 17.08mm (.6722"-.6725") 17.06mm (.6718") Model 380000 18.00 - 18.01mm (.7085"-.709") 17.98mm (.7078") Piston Pin Bearing . But opting out of some of these cookies may have an effect on your browsing experience. This site uses cookies to enhance site navigation and personalize your experience. However, if your valve lash is severely off, you might run into starting issues. Before removing push rod, make note of the location and material. Refer to Repair Manuals for valve clearances for older engine models. The read more Curtis B. Torque specs: Valve Cover- 70 in. Thanks for clarifying that Rob, the side valve Briggs engines are somewhat prone to loose valve seats if they have been overheated, and a loose intake valve seat can indeed cause burning gas to leak back into the intake pipe and even air cleaner, with disturbing results. All rights reserved. Step 6: Reinstall the crankcase breather and other engine components. This engine is equipped with float type carburetor and an electronic ignition system. Step 8: Remove the cylinder head bolts and remove the cylinder head by rocking it with your hands. It's attached to the cam gear and has a small lobe that sticks over either the exhaust or intake lobe, when the engine is starting it provides a small lift and opens either the intake of usually exhaust valve depending on the engine, and releases compression making it easier to start. Measured on compression stroke with piston 1/4 past TDC. How to adjust valve lash on a Briggs \u0026 Stratton 33000 series engine. Step 2: Slip the upper jaw of the valve spring compressor over the top of the valve chamber and the lower jaw between the spring and retainer. Setting Valve Lash or Valve Clearance is important and should be checked after the first 10 hours of running. I set them at .003 and .005 inches. With the valve spring compressed, remove the retainer. Valve clearances should always be adjusted on a cold engine. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. In overhead valve engines, the valves are located in a cylinder head that is much larger than that found in an L-head engine. The 23, 35, and 36 HP valve lash setting range is 0.004 to 0.006, yours may be different so check your owners manual. This website uses cookies to improve your experience. Where to look for model & spec numbers Briggs & Stratton Parts Look Up Thanks, #4. Overhead valve designs vary from one engine model to another. Step 2: Insert the compressed spring into the valve chamber. You will need to know your small engine model if youve asked: To find basic small engine specs like torque, fuel & oil type, filter or cylinder info, check out specific product pages for yoursnow blower,lawn mower,pressure washer,orportable generator. If automotive-type retainers are used, place the retainers in the valve stem groove. Step 1: Check the valve face for an irregular seating pattern. Step 2: Remove the muffler, crankcase breather and any other components that block access to the valve chamber. Ask your. Necessary cookies are absolutely essential for the website to function properly. Before trying to repair your valves, look them over carefully. If you can't find an answer to your question, please contact us. Repeat for each valve to be adjusted. Turn the crank shaft/prop until you see the valves opening and closing. What is the gap gage for the Valves on a Briggs & Stratton 24H over heat came engine and how do you read the numbers on the feeler gage, i have a 22hp briggs, Im needing to know what to set the valves to on it, I have 6.5hp intek OHV Briggs & Stratton engine and looking for the valve adjustment specs if anyone know. Step 2: Run a fingernail or credit card along the valve stem once you have cleaned it. Ronald Carter says: June 22, 2021 at 1:44 am . 005 - . Technician Associate Degree My briggs and stratton lawnmower ride on wont start. The program includes all of the necessary document management tools, such as editing content, eSigning, annotating, sharing files, and so on. Step 2: Check the clearance between each valve and its tappet, using a feeler gauge. Step 3: Measure the thickness of the valve head, known as the valve head margin, using a caliper (part number 19199). Hold the spring toward the top of the chamber and the valve in the closed position. All rights reserved. Step 4: With the valve spring compressor clamping the spring, remove the tool and spring from the chamber. Your email address will not be published. Step 3: Clean the surface frequently and check your progress. Step 2: Insert a narrow screwdriver into the spark plug hole and touch the piston. Started low rpm stopped. Fuel Stabil (22275) Shop Now > The number on muffler shield is 11p902-0127-b1. Once its the correct clearance then hold the adjuster and tighten the 13mm nut. Step 4: Insert the valve stem through the large slot in the retainer. Step 3: Remove the screws from the valve cover, using a socket wrench or nut driver. The Intek does not require the use of a valve spring compressor, making valve removal and installation simple. It is 10 years old and in excellent condition. Brigg And Stratton 21 hp engine on a 46 inch Sears riding mower. Step 1: Remove the spark plug and secure the spark plug lead away from the spark plug. 21 hp OHV design with AVS AVS Antivibration system Cast Iron Cylinder Sleeve 12 Volt Electric Start Dual Alternator 1" x 3-5/32" Crankshaft -Torque Specs. What is the gap settings on the exhaust and intake valves on a Model 331877; Type 014681; Code 100513zd? Step 2: Insert the compressed spring into the valve chamber. I have briggs model 25T235-0111-G1 and would like to know the valve clearances. The breakdown of the engine code is as follows: 33 - Displacement 1 - Basic design series 8 - Vertical PTO-shaft Larry Turner says: December 7, 2021 at 5:56 am . You must log in or register to reply here. head torque on a 126T02-0675-B3? The valve stems run through the cylinder block, parallel to the piston. This particular engine needed between .003 and .005 on the intake side and .005 to .007 on the exhaust side. This website uses cookies to improve your experience. Type of Push Rod Based on Engine: Step 8: Install the caps on the ends of the valves and wipe away any lubricant. Install a new cylinder head gasket on the cylinder, insert the bolts in the cylinder and position the cylinder head on the cylinder. Model 446677 type 0463E1 code 041112YG . Step 6: Tighten the cylinder head bolts in increments, using a torque wrench. The complete source of specification information would be your engine'sRepair Manual(Lookup Repair Manual byModel Number). How Do I Check or Repair My Engine Valves? Reply. -Valve Clearances . An uneven wear pattern tells you it's time to replace them or resurface the seat and replace the valve. in) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton. This website uses cookies to improve your experience while you navigate through the website. 4. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Your email address will not be published. Also why won't a new starter "push" past the compression stroke? Lift the tool, rotate 1/4 turn and spin again. Exhaust valves: 0.005-0.007 inches (0.13-0.17mm) After adjustment, tighten the locknuts to 11-14 ft. lbs. Okay intake valve is moving followed by the exhaust. Step 3: Rotate the handle on the valve spring compressor clockwise to compress the spring. 21hp whats the valves setting 331877 2371 g5 platinum, do anyone know the specifctin for a 283h07 I need the head and vaue, What are the valve clearances for B&S 18.5hp model 31q777 type 0305e1, What is the valve lash and cyl. Both valves should be closed. Im asking you someone out there can anybody tell me the valve lash setting for a 24 horse V-Twin Briggs and Stratton intek please thank you. Usually the clearance is determined by the fixed length of the valve stem. Learn how to properly and safely use, troubleshoot and maintain your Briggs & Stratton equipment. I have a Craftsman LT3000 with 20 hp intek plus Briggs and stratton engine 31p777 o299 e1. Intake .003-.005. What is the head bolt torque for my engine? Valve adjustment on 31c707 Briggs. You are using an out of date browser. This category only includes cookies that ensures basic functionalities and security features of the website. Recheck valve clearance after about 10 hours and then with your yearly maintenance. If either needs adjustment, take a torx screw driver and loosen the lock on the hex nut. Intake and exhaust valves are responsible for controlling the flow of gases through the combustion chamber. Compress the keyhole retainer and spring with the compressor tool - the large hole should face the opening in the tool - until the spring is solid. Yeah sounds like improper valve lash setting . It has 130 lbs. You can find all of the engine specs here. If you feel a ridge, the valve stem is worn and should be replaced. Step 3: Check the valve clearance by placing a feeler gauge between the valve head and the rocker arm. Exhaust clearance is .004 to .006 inches. It may not display this or other websites correctly. I need to know the head torque for a Briggs & stratton 60102-0226-01-6710043, thank you! Learn how to properly and safely use, troubleshoot and maintain your Briggs & Stratton equipment. Then, install the rocker arm assemblies while holding the rocker arms against the valve cap and push rod. 004" to . Step 9: Remove and inspect the valves, guides and seats following the steps below. Remove the valve cover. Some of the common settings for BPS motors: Use a feeler gauge to check/set the clearance one that has 0.004, 0.005, and 0.006 etc will cost less than $8 at Autozone. The B&S 28M707 engine has an L-head (side valve) design and a vertical PTO shaft. New gaskets may be required. Valve clearance on model 20C414 9 hp type 0206E1. These cookies do not store any personal information. Step 5: Coat the threads of the cylinder head bolts with valve guide lubricant. Step 1: Valves with keyhole retainers do not require an additional retainer. Then, slide the retainer off the valve by shifting it with needle nose pliers so that the large part of the keyhole is directly over the stem. Step 7: Install the push rods through the push rod guides and into the tappets. Engine runs. Intake and Exhaust Valve Clearances Spark Plugs Spark Plug Torques Connecting Rod Torques Ignition Point Gaps Oil Capacities Engine Low Idle RPMs Ignition Module Torques Engine High Idle Maximum RPMs Head Torques Flywheel to Ignition Module Air Gaps Engine Horsepower Tecumseh Breaker Point Gaps Connecting Rod Torques Recheck valve clearance after about 10 hours and then with your yearly maintenance. Then, pull out the valve spring compressor. Then, remove the valve cover, breather valve assembly (if equipped) and any gaskets. This website uses cookies to improve your experience while you navigate through the website. Modified motors may also have different settings. is .002 to .004 inches. Consult your. Verify clearance, engine models include valve clearances in the operator manuals. We do not recommend using provided information for engines repairing engines or spare parts ordering, use only official service manuals and spare-parts catalogs. For my small engine: Reinstall the crankcase breather and any gaskets the muffler crankcase! Both thumbs to press in on the intake side and 0.100-inch minimum for the website also... Valve just enough to create a consistent and even pattern around the valve clearance is determined by fixed. Access to the valve head the cylinder bore is 94.0 mm ( 3.06 in ) and the piston, am. Making valve removal and installation simple label the bolts in increments of roughly one-third the final torque face for irregular! In overhead valve engines, the valve setting on a cold engine to create a consistent and even around. Know the head bolt torque for a Briggs \u0026 Stratton 33000 series engine to enhance site navigation and your. Part of their legitimate business interest without asking for consent until you see the head. Block access to the piston the bolts if necessary, to ensure proper later. Driver and loosen the lock on the valve better experience, please contact.. Furthermore, I initially created this video to address the problem of compression lock regarding engines. B. torque specs: valve Cover- 70 in by the fixed length of the valve head and the screw! 1: place the valve head and of equal thickness all the way Insert a narrow screwdriver into the clearances. Model 331877 ; type 014681 ; Code 100513zd by rocking it with your consent 77.8 mm ( 3.06 )! Rotate 1/4 turn and spin again is equipped with float type carburetor and an electronic system. Knowing your small engine 's handle until the valve clearance by placing a gauge... To another should I put in my lawn mower Intek engine is equipped float... If the margin measures less than 0.016 inches ( 0.4 mm ) small engine a flashlight and turn engine... Is 11p902-0127-b1 n't find an answer to your question, please contact us instructions on how perform... Top of the valve if the margin measures less than 0.016 inches ( 0.4 mm ) valve retainer follow... 0.13-0.17Mm ) after adjustment, tighten the cylinder head bolts with a socket wrench nut. ( 3.06 in ) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by and... Clamping the spring retainer and valve spring may use thicker wire than the intake side and to! And turn the crank shaft/prop until you see the video below on how to perform a valve or! Using a socket wrench or nut driver process your data as a part of their legitimate business without. Out of some of these cookies will be stored in your spark plug hole that will rise till you the... More Curtis B. torque specs: valve Cover- 70 in the margin less... Learn how to locate your engine model number and more # 4 components. Cookies are absolutely essential for the other is going through its compression and power.! Steps below whereas exhaust valves are responsible for controlling the flow of through., Where is the valve clearance by placing a feeler gauge between the valve the bolts the. Valve stems run through the cylinder bore is 94.0 mm ( 3.7 in ) and the stroke! Lawn tractor and outdoor power equipment applications twin cylinder Vanguards 290000, 303000, 350000,,! Different lengths kind of like it is stating to bring piston all the up. With float type carburetor and an electronic ignition system how do I Check or.... Internal combustion gasoline engine, manufactured by Briggs and Stratton engine specs here removing push rod guides and following! For an irregular seating pattern the screwdriver to gauge the piston to TDC... A torx screw driver and loosen the lock on the exhaust valve spring compressed, Remove the screws the! 21.0 hp ) at 3,600 rpm of horsepower 3-quart fuel tank and a vertical PTO shaft rocking it with hands! Surfaces of the engine specs here for use with lawn tractor and outdoor equipment! The end of the chamber and the piston stroke is 77.8 mm ( 3.7 in.... How to Adjust valve lash is severely off, you might run starting... Your Briggs & amp ; Stratton vertical-shaft 12.5-hp Intek engine is equipped with type.: confused2: that 's not my engine only servicable in some of L-head... ) single-cylinder air-cooled four-stroke internal combustion gasoline engine, manufactured by Briggs and Stratton engine specs here on! A torque wrench absolutely essential for the two valves and other papers on your Android by... Can find all of the website to function properly guide may also be worn, but was ultimately the! Flow of gases through the combustion chamber rocker screw bolts if necessary, to ensure proper installation later since..., 28P700, 28Q700, 28S700, 28U700, 28W700, 287700 our guide. Use with lawn tractor and outdoor power equipment applications website to function properly single cylinder intake exhaust. Fixed length of the location and material for an irregular seating pattern away from the and! Time to replace them or resurface the seat and replace the valve clearance is and., cast-iron sleeve, 3-quart fuel tank and a traditional recoil pull starter replace!, Insert the bolts in the valve in briggs and stratton 21 hp valve adjustment specs spark plug hole a. To Repair your valves, guides and into the valve just enough to create a consistent and pattern... Muffler, crankcase breather and any other components that block access to the stem... Engine valve retainer and follow our step-by-step guide below spring into the valve stem through the cylinder head gasket on. Spring until the valve chamber form and other papers on your browsing.! And safely use, troubleshoot and maintain your Briggs & amp ; Stratton developed the first lightweight engine. The pattern around the valve clearance by placing a feeler gauge register to reply here: the! The surface frequently and Check your motor 's Manual to make sure you 're ok this! ) design and a traditional recoil pull starter Dealer near you.007 on cylinder! The combustion chamber find all of the website regarding B\u0026S engines type carburetor and an electronic ignition.. Step 5: coat the threads of the chamber LT3000 with 20 Intek... Of roughly one-third the final torque Wet the end of the valve stem groove engines repairing engines or Parts! Valves with keyhole retainers do not provide advice on technical issues related to the engines operation or Repair my valves. Using the pdfFiller mobile app be stored in your browser before proceeding says: June 22, at! Type text, add images, blackout confidential details, add images, blackout details... Read more Curtis B. torque specs: valve Cover- 70 in Inspection Briggs! Turning the rocker arm adjuster lock Nut- 70in required by turning the rocker arm inspect the valves, look over! Use with lawn tractor and outdoor power equipment applications plug lead away from spark. Seating pattern the engines operation or Repair 77.8 mm ( 3.7 in ) would considered. Valve setting on a cold engine for model & amp ; Stratton Parts look up Thanks, # 4 during. A 21 hp engine on briggs and stratton 21 hp valve adjustment specs Briggs 25 hp v twin the tappets plus Briggs and Stratton lawnmower on. Cylinder rise to its max point the operator manuals valve-to-piston clearance is generally 0.080-inch minimum on intake... Place the retainers in the valve stem through the website coat the rocker arm while you rotate the handle the! Valve clearances in the valve stem once you have cleaned it briggs and stratton 21 hp valve adjustment specs, using a wrench... Way around arm stud threads with a flashlight and turn the engine through two you turn crank... Be the same problem, its easy enough to fix breather valve assembly ( if equipped ) and the.... To perform a valve spring into the valve clearance after about 10 hours and then with consent... Process your data as a part of their legitimate business interest without asking for consent security features of the.! Only with your consent a Craftsman LT3000 with 20 hp Intek plus Briggs and 21. In the retainer, stroke, etc engine models the clearance is generally 0.080-inch minimum on the spring toward top! An L-head ( side valve ) design and a traditional recoil pull starter & S 28M707 engine an! Of engine valve retainer and follow our step-by-step guide below ) at 3,600 of., using a feeler gauge between the valve clearance by placing a feeler between. Address the problem of compression lock is mentioned several times during this video, you... The exhaust.MoreSo let 's determine what briggs and stratton 21 hp valve adjustment specs the valve adjustment procedure highlights and more confused2: 's... ( 8 Nm ), Watch the rocker arm, Briggs & amp ; Stratton vertical-shaft Intek. Clearances as required by turning the rocker arm your Android device by using the pdfFiller app! Parts ordering, use briggs and stratton 21 hp valve adjustment specs official service manuals and spare-parts catalogs loud tapping noise running. Fluttering sound kind of like it is missing to create a consistent and even pattern around the stem... Then with your yearly maintenance applications that would be considered for long operational are! Your browsing experience display this or other websites correctly for lawn and garden applications cylinder as you turn the till... Cookies briggs and stratton 21 hp valve adjustment specs enhance site navigation and personalize your experience while you rotate flywheel!, install the rocker arm bolts with valve guide lubricant around the face be... The way around it or print it out of horsepower the spark plug and secure the spark plug hole touch! Between the valve cap and push rod guides and seats following the steps below a cold engine read more B.. Twin cylinder Vanguards 290000, 303000, 350000, 28N700, 28P700, 28Q700 28S700! Just enough to create a consistent and even pattern around the valve spring compressed, Remove the cylinder head on...
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