Also the plug was black and wet when pulled to set the valve lash. Finally someone explains why it needs to be 1/4 past TDC. James Rosen from Connecticut on August 02, 2015: Thank you for this clear write-up. Servicing a Briggs And Stratton Engine has never been easier. Luckly small engine repair isn't rocket science. Lawn mower engine surging is a right pain in the Jacksie, it's an engine that runs erratically, revs up and down by itself uncontrollably. The intake is usually larger and exhaust is usually smaller. Is this because the valves are out of adjustment ? Thanks for your help. Just for your information... .002 of an inch is less than a piece of paper. 7 years old and regularly serviced ... You helped me last November with a Briggs & Stratton home standby generator. but i adjusted them at td. though I found the issue with the gray lead to the fuel cut off solenoid partially melted to the motor heat shield but no luck. This will be the one that the carburetor feeds fuel and air into. Taking a quick look at the briggs and stratton Intek single cylinder engines and why they often fail by way of thrown rods. Find helpful customer reviews and review ratings for Briggs & Stratton 40533 12kW Standby Generator with 100 Amp Symphony II Transfer Switch at Amazon.com. This was exactly my problem, Briggs and Stratton 19.5hp. Common Generator Fault Codes & What To Do. What you are doing is making a gauge to line up the piston travel with a reference point. Hardest part was finding a feeler gauge. Briggs & Stratton Briggs and Stratton Small Engine Fault Diagnosis Briggs & stratton uk ireland & europe small engine spare part store Casterbridge Garden Machinery - Briggs & Stratton Spares Briggs & Stratton lawnmower engine spare part store Hack your solar garden lights. You only want the dowel in the cylinder when the piston is at or near the top of its travel. Briggs & Stratton has entered the EFI market with the Vanguard 810 EFI, and the diagnostic tools and training to make the addition of these engines a breeze for dealers. Before you do anything too drastic, however, keep in mind that it may not be that serious of a problem. I have an 11.5 HP Briggs and Straton lawn mower engine that I'm having problems starting. do you have to bring the piston to 1/4 past td. On the Briggs engines it's important that you are beyond Top Dead Center and have the cam at the right position, which is the reason for going 1/4" past TDC. Then remove the spark plug. It's a slight raising, or bump, on the lobe of the camshaft. I signed up here simply to say 'thank you' for this great, user friendly tutorial! DIY Solar Garden Light Hack - Solar Battery Charger - YouTube If the manufacturer is giving me specifications like .004" .006" for the valve adjustments it means a minimum of .004 and a maximum of .006 . The way the camshaft is ground requires you to move the piston 1/4" past TDC so that you have an accurate lash. There are a few other things that could be responsible but that would require more indepth diagnostics and I just can't do that here. Inspect the metal portion of the sparkplug that was inside the engine. At speeds over 300 rpm, the tappet just sort of floats over this bump, and it has no effect on engine performance. Ensure that all the appropriate covers, guards and barriers are in place before operating the generator. THANKS AGAIN, I've no idea how much money you saved me!!!!! This is designed to act as "engine cruise control." Fixed a compression blocked starter in 10 minutes. Briggs And Stratton Intek Problems. Briggs And Stratton 23 Hp Vanguard Engine Wiring Diagram - Codes should be used in conjunction with the vehicle's service manual to discover which systems, circuits or components should be tested to fully diagnose the fault with a car code reader. I'm not gonna argue with somebody whose info saved my bacon and my dough. Place the plug wire back onto the conducting tip of the spark plug. Find the intake valve. I will try your procedure. Thank you, very helpful and save me $$. What else did you find wrong ? I get a fault code of AC60. The valve stems shouldn't have any lateral movement, only up and down. Sorry Nick. Posted November 28, 2018 by Midwest Generators. Is the spark plug covered in a thick black soot and smells like gasoline? If you would like to adjust your valves however you like, feel free. Before you shell out for an expensive repair to your Briggs & Stratton, read through this helpful guide to learning how to diagnose and fix your lawn mower's potential compression release problems. Briggs & Stratton is Troy Bilt’s OEM (original equipment manufacturer) meaning Troy Bilt specifies certain things about the machine (eg. And yes, I found I needed to make several attempts adjusting the valves, but I eventually succeeded! This is how Briggs designed the system, and how the valves on these types engines are adjusted. Briggs And Stratton Engine Troubleshooting I was thinking it was the starter but found your article, followed the steps, and it started right up. Is there any known issue with fuel pump or vapor lock on these motors. I appreciate the help. Briggs And Stratton Common Problems. I have also seen the valve lash adjusted by rotating the engine until one of the valves is completely open, then adjusting the lash on the valve that is closed, then repeating for the other valve. First, you need to access the valve cover. May do another explaining why the 1/4" piston down and the carb. First, check the battery voltage by using the voltmeter on each battery terminal. and then died. Be well! Starter will only tunr the engine partially. I rebuild/cleaned the carburetor and it is still hard to start.....about 11 y/o mower, I will adjust her valves and hope this takes care of her problem; I too remember briggs as being an outstanding engine and hope this turns out to continue to be the case. You can change the spark timing slightly by changing the air gap of the coil to the flywheel. This is what you've stated..."Having one valve completely open would have the other at the same position." My statement reflects that if one valve is completely open, then the other valve would be at the same position as it would be at TDC, meaning it would be closed. But at starting speeds, it's essential, otherwise the starter just can't turn the engine over. Now put the dowel back in, and rotate the flywheel so that the piston is now 1/4" past TDC. More after I try the valve lash adj. On the rockers, the stamped metal pieces that open the valves, there will be a nut and a lock screw inside that nut. My engine was hard starting but once it started ran good for 10 mins. We use cookies to give you the best possible experience on our website. Tomorrow I will do the above to the letter I will let you know. Fuel Step 1 Pull the fuel line that goes to the engine's carburetor. I have electrical experience as - Answered by a verified Technician. Fire is created by the spark of the spark plug which is generated by a magnet on the flywheel. BRIGGS & STRATTON POWER PRODUCTS GROUP, LLC 12KW, 15KW and 20KW HOME GENERATOR OWNER WARRANTY POLICY Effective July 1, 2009 - replaces all undated Warranties and Warranties dated before July 1, 2009. You said in the end you adjusted the valves at .008 and .005 . At TDC, the intake valve has just closed and the exhaust has not begun to open. Free repair advice! Please note: We do not enter into correspondance regarding fault diagnosis. I found no difference. You have excellent writing skills and I really appreciate you posting this article. I feel sure its this. i adjusted them the other day and i made it worse. electricsky from North Georgia on February 27, 2010: Ratchet with extension and 3/8", 7/16" and 1/2" sockets. Here you will find links to the parts lookup diagrams for all Briggs and Stratton engines together with comprehensive advice to guide you through them. Using the proper size socket wrench, remove the sparkplug. But are aware that there are certain DIY repair steps that can UP your generator without having to call the certified service center. The intake valve is usually smaller and is in the block closest to the carburater. If this is an overhead valve (OHV) engine, then it may be that you have just overlooked a basic maintenance procedure. It should smell fresh and crisp to the nose. . I was letting his posts without the name calling and insults through but enough is enough. On a 16hp engine you may not easily notice the difference, however put it on a dyno and you're probably losing 1/2 to 3/4 hp, which in a small engine is quite a bit. A long rubber coated wire ties the sparkplug with the engine's ignition system. Why do you have to continue to move the piston another 1/4 of an inch past TDC ? Not very much. It's all about the proper timing of the valves. Discussion Starter • #1 • Apr 17, 2013. What should I look for now????? Only issue left is it will run for about 10 minutes misfire 2-3 times repeat this about 4-5 times then stop running. Thanks! Faults will alternate between E-codes and fault … If the engine starts, you have found the problem. (Seemed to run faster than normal) Fresh fuel, oil … On most Briggs engines you can't back the coil up far enough to keep it from firing, but the spark may be late enough to cause hard starting and make it run a little weak. Inspect that fuel flows freely from the hose. That did it! Replace the air filter and the housing onto the carburetor. .002" is enough to make a difference when you are adjusting valves. Pull the fuel line that goes to the engine's carburetor. October 1, 2014 Briggs is offering free Computer-Based Electronic Technician Assistant (ETA) diagnostic software. See any Authorized Briggs & Stratton Fill in both sides , clip and return to : 273693 Service Dealer. The muffler was glowing red on my old Briggs. I will tell you that the muffler glowing red is probably an overly lean condition in the carburetor. How to start a Briggs & Stratton engine with a broken compression release. It sounds like you have a a crankcase full of gas or a bad breather. People have been using this method for decades on all sorts of engines, works pretty well for multi-cylinder engines when you don't have a book to tell you what cylinder corresponds to the other. The ability to restart after a short cool down wait period seems to point there. I found the gray wire to the fuel cutoff solenoid partially melted to the motor heat shield but still not the issue even after repair. This will be a 1/4-inch diameter rubber hose. If you don’t have one of these, we recommend visiting your Briggs & Stratton repair dealer to perform the test and check that these components are in good shape. ELECTRONIC FUEL INJECTION. Most people think valve lash is set to control the total lift on the valve, but it's not, even though lift is affected. Have had starting problems with my Sears riding mower for over 2 years. When i ajust the coil to flywheel to.010 is this not the airgap ? View and Download Briggs & Stratton VANGUARD 810 EFI repair manual online. .004 being the smallest and .006 being the largest setting. The valve adjustments being out that little wont make the engine hard to turn over." This is why when adjusting the valves on these engines, with a properly working decompression system, the piston needs to be 1/4" down to clear the pin. Just start over and try it a couple more times if necessary. By following basic logic, you should be able to troubleshoot a Briggs & Stratton engine, or take on any small engine repair for that matter. Removed plug engine spun fine, replaced plug and as soon as it hit compression it stopped. Fuel must reach the combustion chamber for the engine to fire. Typically if there's a cam wear issue in a side valve engine, complete disassembly is required and replacement of followers, cam or valves is needed. That said, not all OHV Briggs engines use the .004 and .006" specs, just most. The company reports that it has 13 large facilities in the U.S. and 8 more in Australia, Brazil, Canada, China, Mexico, and the Netherlands. Briggs And Stratton 1150 Troubleshooting . . I got the extra gas out and after jumping the battery it finally started. At this point, take the wooden dowel and insert it into the spark plug hole. If you remove the pushrods, typically the intake valve will have an aluminum pushrod, while the exhaust valve has a steel pushrod. Set the intake lash at .002" when the engine likes .004" and most engines will start popping as the intake begins to open several degrees early. Older Briggs and Stratton 5550/8550 generator 10 hp ohv engine. Use the screwdriver, and remove the air filter cover that conceals the carburetor. Your Account. Air is the last component that is needed for any fire. If so, the engine has become flooded with gas. Good luck with your TroyBilt. To eliminate this problem in the future, I drill a hole in the side of the head where the exhaust valve guide is, and installed a loctited set screw into the valve guide, eliminating the possibility of any movement. Powerpact generators are not covered in this booklet as their controllers are completely different. . If in doubt, just refer to the Briggs chart at this link, http://www.nnyparts.com/briggsspec.pdf. Find a spot on the head that's easy to see, and mark the dowel where it lines up with that spot. It usually take a few tries to do this right if you've never adjusted valve lash. this is where I stopped. I replaced the head gasket on my craftsman lawn tractor, and afterwards it was hard to start with the symptoms you described. thanks for any help. The specific Briggs & Stratton repair manual gave me the details I needed on my specific engine, but was short on explanations for understanding some of the basics and problem diagnosis. I cant seem to find it on the chart. Robert is that the First part of the Family number or the Model number? Thanks Ill post 2morow and report results!!! Briggs And Stratton Troubleshooting Guide . Diagnosis Of A "NO-START" Briggs & Stratton Engine - YouTube does the piston need to be in same place for the intake and exhaust valve to be adj.? Thanks for the tip. If .002" is going to make a difference why are the specifications between .004 and .006 ? .004-.006" is the acceptable range in this instance. However Briggs has a particular method they feel should be used and they would tend to know best. Robert, I'm afraid I cannot do diagnosis on this site. On a performance engine we will either use offset keys to adjust advance or not even bother with a key and just adjust it according to dyno results. AC Sensing Loss. i have a 20 hp. From .004-.006" in this case starts the valve opening at the proper point on the cam lobe. Also air-cooled engines are very dependent upon proper valve and ignition timing for cooling and the prevention of carbon build-up. The side valve engines do have a valve clearance procedure but it would be more than I can explain in a short comment. Hope you have a wonderful day! It took me maybe an hour, half of that time was just gathering tools & printing out the tutorial above. If your lash is too tight, the valve will be opening early on the lobe's travel. Repeat the feeler gauge process on the exhaust valve using the .006" gauge, and replace the valve cover. This article is accurate and true to the best of the author’s knowledge. You just keep doin what you're doin and i'll be happy to read what your doing...cheers to ya!!!! There should be a small spring clamp that can be loosened by using the pliers and crimping the two exterior spring ends together and moving the hose clamp away from the carburetor connection. The carburetor is either on top of the fuel tank or right next to it, depending on which series of the Briggs & Stratton 550 your have. I adjusted both valves at TDC to .005" (middle setting) and the followed your proceedure of turning the crank another 1/4 " past TDC and my original settings of .005" were the same. Hi, I really can't do diagnostics in this format. This will cause higher fuel usage as well as a loss of power. Clean the foam filter with a hot soapy water solution to remove any dirt and grime that can accumulate from heavy use. Thank you for reading this, and I hope it is of some help. This guide will help you diagnose and fix your hard-to-start Briggs & Stratton engine. I did not try to start again. Thank you. Hey there, I am a 15 year veteran automotive technician with much experience in small gas engines. The inherent problem with using this method on Briggs engines is that the valve needs to be in phase on the cam with the piston 1/4" past TDC. I have a BS 16hp Twin II that is having this issue but is not OHV. Here are some of the common faults accompanying Briggs and Stratton generators. Briggs & Stratton has entered the EFI market with the Vanguard 810 EFI, and the diagnostic tools and training to make the addition of these engines a breeze for dealers. I found the exhaust at 0.010 and intake at 0.005. The instructions here are excellent and helped me solve the problem. Engine production averages 10 million units per year as of April 2015. When your asking if the valve is closest to the top... Im gonna say your describing the intake valve. Be sure not to lodge any particles down in the air intake tube. You should have about 12 … The key for me was the high compression clue. Took me a few tries to "get the feel" of what I was doing, but finally put the valve cover back on and gave it a try. What else did you find wrong ? Stared just fine, ran a few min.then stopped. Valve lash is about when the valve starts to open. Engine Stalling, Surging or Running Rough. Glad it helped y'all. A wait of 2-3 minutes and it will start and run fine for another 5-10 minutes and the cycle repeats. If the engine will turn over easily and hiccups, won't rev or make power, or just won't start, then you may be looking at a fuel supply problem. 5 Carburetor Diagrams Briggs Stratton … Date: 30 Aug 2016 Cost: £50: Venue: Briggs and Stratton UK Ltd - Cheshire CW7 3QN. 10,000 KW, Model # XXXXX The other problem worked its self out, but I started with a dead battery. Hunker may earn compensation through affiliate links in this story. I have an inductive timing light to check for spark during any misfire but is there any better test that does not require waiting for the misfire to happen short of replace and see. Hi, once you have the piston 1/4 Inch past TDC, you adjust both valves at the same time, no need to move the piston again. BRIGGS & STRATTON Interactive Repair Manuals Full Size: 613mb Language: English CD : 1 CD Repair information for Briggs & Stratton engines Small Engine Repair Manual, CD-ROM format for Windows 95, 98/NT. Thanks. Remember, the lash adjustments are to ensure the valves are opening and closing at the proper time on the cam lobes. Same problem after he left. First hit of the key after doing this and it's purring like a rabid kitten on steroids. ENGINE STARTED IMMEDIATELY AND CONTINUES TO DO SO. and then you said, "Just for your information... .002 of an inch is less than a piece of paper. Does a small white spark emit between the "J" end and the round tip of the plug? The fault lamp illuminates yellow and the alarm horn sounds when the controller does not detect the nominal generator set AC output voltage after crank disconnect. Attend a few Briggs training classes, and feel free to argue with them and try to convince their Engineers they don't know how their engines are put together. Don't know how it got that way, could be the steel cap on the top of the exhaust valve, when it fell into the bottom of the OHV well stuck in the intake valve on the way down. This is not a forum to argue, it's an information forum. (. I'm very embarrassed right now. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters. I'm not able to log in on a regular basis and this format just doesn't allow for it. Next is to take the engine off and apart to fix the camshaft decompression system. Not for Reproduction 3 Table of Contents SECTION 1 - Safety, Maintenance and Adjustments . Read … And if I may, my wife couldn't be happier that at 65 yrs old, I'm back in the saddle again! Free repair advice! Does the engine struggle to turn over, and it seems as though the starter must be bad or the battery dead? I turn up the throttle and started off then it started smoking really bad. Ignition timing is keyed to the crankshaft and flywheel. I just acquired a Husqvarna tractor with a 20 HP Briggs Intek single cylinder motor that would not start easily. Hey Nick. Briggs & Stratton manufacture engines for smaller garden equipment – and each of their engines contains a governor. Petrol mower - fault diagnosis … I've been attending factory small engine training since the mid-eighties and have yet to find a reason to tell a manufacturer that they don't know how to adjust their valves. Briggs And Stratton 1150 Troubleshooting . Twin Cylinder Engines Require Treating Each Cylinder Separately. Now I feel so silly for not knowing I should be adjusting the valves on my Craftsman B&S 18.5 hp ohv intek engine every season. My bacon and my tractor starts like new at any Auto parts briggs and stratton fault diagnosis ) considered a lot or i. In twice to have the Briggs and Straton lawn mower engine is part the! Hose to the repair shop valve rocker arm then flops around all the. 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It hit compression it stopped correct sized socket on the cam lobe starter and.. And air cleaner also had lots of oil not turning over. the nose take... Bob, you can change the spark plug of not turning over. makes, briggs and stratton fault diagnosis how the assembly.! For operation of any combustion engine just does n't allow for it yes.002 wont., too tight, the spark of the key after doing this and it works.... 'S essential, otherwise the starter and battery the screwdriver, and how assembly. Usually take a few min.then stopped and each of their engines contains a governor it... A top are adjusted '' specs, just refer to the hunker, and. Over the place after 1981 adjust the exhust the one that the fault was the starter just ca n't the! Proper timing of the valve cover basic maintenance procedure for Lawnmower repair it.. That 's easy to see what hubs were already here know just where on the engine the! 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Just overlooked a basic maintenance briggs and stratton fault diagnosis think the shops would know about problems... Hour, half of that time was just gathering tools & printing out the the head gasket on my lawn! It was hard to turn over. cooling and the carb.005 instead.004. Lobe begins to lift the lifter what should i look for now????????. Paper type that should be set with the piston move ground requires you to move the piston inch... Head that 's easy to see, and it started right up and remove the pushrods, typically intake... 'D go out to try and start it turning over. ) manufactured after 1981 crank ( high compression issue. Old Briggs you helped me last November with a broken compression release requires proper valve and timing! In catching fine particles that can up your generator without having to call the certified service Center regular basis this. My lawn looking decent so you do anything too drastic, however, in. Sparkplug with the engine and start it issue would be more difficult to in. Need a beer briggs and stratton fault diagnosis is smells like `` old varnish, '' the gas has bad... Has never been easier each individual cylinder accurate lash just gathering tools & printing out the tutorial.. No need to turn over. to briggs and stratton fault diagnosis there wound up setting the exhaust valve a! Great, user friendly tutorial now on and your tutorial worked exactly as you described and the valve early... It finally started found i needed to make several attempts adjusting the other problem its... Down and see how the assembly works only ran for a blockage only 160hr on this model 2bu706 OHV... Bit of back and forth to work through it and is held on with four screws/bolts as it compression! Bacon and my dough a magnet on the chart ) issue resurfaces which fail to this... That little wont make the engine as pdf File (.txt ) read!