Mice love wiring insulation and unfortunately our furry friends have cost us a coil. 19 hp briggs & stratton twin engine . The spark on these small engines is very difficult to see unless you are in a dark environment. Dirty plug – Self explanatory, it’s a plug that’s contaminated by too much gas (flooding), carbon, or oil. While you watch for spark have the helper hold the bail lever as normal and yank on the pull cord. When I check this wire with a test light, I get nothing. Mowed half the lawn then the engine stopped. I am out of ideas. Pull the cord, cord jams half way (or pulls back), no spark because the flywheel isn't spinning fast enough to produce electricity through the magneto (coil). They should put out a small amount of ac voltage as the magnet on the flywheel passes by the coil as the engine is … The plug wire terminal that clips to the spark plug becomes loose and that can cause no starts, poor running, and intermittent starting/running. Most mowers owners are familiar with the bail lever at the handle bars which must be held in order to start the mower. Wear leather work gloves throughout this process to protect your hands and the sensitive parts of … Replaced Ignition Coil assy., still would not fire. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them. The main components of the stop/start assembly include: The coil control wire is connected from the stop/start switch on the flywheel brake assembly to the coil, which is fitted on the engine. crank the engine and see if you can see a blue spark. Yes, spark plugs do wear out. Can't get any spark from the new spark plug and coil unit I just replaced. Either one will not produce a spark. Villiers Midget no spark I recently acquired a Qualcast Sixteen with a Villers Midget engine, got it home and its got no spark, ive checked the points gap (0.15 mm) and cleaned the gaps too with some sandpaper GT85 and a rag, Still no spark. Unhook the spark plug wire and secure it, removing any batteries, if equipped. This can be checked using a voltmeter (to measure resistance) but it is required to remove the wire connection between the coil and the points. These are the most common spark plug faults: Wrong plug type – Plugs are as you know graded, each engine will have a particular plug code. A replacement terminal can be purchased and fitted to solve this issue. I have no spark to the spark plug . If the insulator breaks or cracks, the plug stops working. I checked the spark plug and see that there is no spark. If your Honda mower does not spark, the first things to check is whether the spark plug is defective or if instead the problem lies with the mower’s ignition coil. Testing a coil and fitting a new one is easy, I wrote a whole post about it right here “Push mower hard to start when hot”. I have one of the early converted f motor setups and yes off is on but this one a model 4600 has the bail flywheel brake system it cant be too hard to figure out its only 2 wires and its being shorted out somehow. I brought it to my local tractor lawn mower small engine repair shop. If you do have a spark and it's still not starting then loosen the brass nut on the underside of the carb float bowl and allow any fuel to drain out. changed spark plugs and still no spark. The coil and plug won’t produce a spark so long as the control wire is connected to ground (Metal of engine). One, is the coil installed correctly? I disconnected the kill wire and measured 0 ohms in the off position and 1.3K ohms in the run position. Still no spark. There must be a need for a ground also through the core to the engine casting. i HAVE A Craftsman riding lawn mower. If there is no spark, then start with a new one. One is the kill wire. Cheapest and easiest process of elimination. Oh yeah, the flywheel magnets seem strong too. A healthy spark plug is essential for reliability, power and smooth running. i am not getting any spark to the spark plug. Faulty terminal connector – It’s different but related to a loose connector. But still no spark. So getting shoved into fences and trees is all part of a spark plugs life, and you thought you had it hard! I tried a new spark plug after checking all of the contacts but no luck. If you are pulling a start cord you don’t have a battery. £14.98. Step 1: Clip one end of the spark tester (service part number 19368) to the ignition cable and the other grounded to the cylinder head as shown below. have a briggs stratton 6.5 front wheel drive lawn mower. You can verify by removing the wire from the coil to the stop switch and testing again. Briggs-Fan. LawnBoy No Spark Good morning, I have a lawnboy model # 10550, serial # 210000842 and that just quit while mowing the lawn and would not restart. Plugs are graded by heat, the plug should get hot enough to burn off contaminates but no so hot that it pre-ignites. I tested for a spark by holding the plug to the engine while turning the key. Show Less. However it’s worth pointing out, getting this test wrong can lead to misdiagnosing and replacing the ignition coil or other parts, unnecessarily. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Figured that should get … Small Engine Technician. at its highest voltage (remember it is AC so it can be + or - volts). £13.14. Common faults here include, cable out of adjustment, meaning the bail lever doesn't pull the brake to the off position. I ... i HAVE A Craftsman riding lawn mower. I followed some video and checked the resistance on the ignition coil. anyways i got it to work.. so i have the engine completely off. also has new spark plug. M# 10301 remove the spark plug and with it still in the boot lay it so its touching the engine block. If your engine should start you either need to run it out fuel, pull the plug wire, or choke it to death. The electrode is manipulated to the correct size by simply bending it with a pliers. This GENUINE Wipac / Qualcast "Electronic Ignition" Unit / Coil Pack F016L34244 fits the Atco, Qualcast, Suffolk Punch, Colt & Webb Mowers that were fitted with the more modern 98cc and 114cc Black Aluminium Engine. I installed a new coil and still no spark. With all the tools gathered and a helper we get right to it. Coils generally work or they don’t, occasionally you’ll get a coil that works when it’s cold and stops when the engine heats up. Two common mistakes to check. Then, disconnect the stop switch wire from the flywheel brake and remove the coil. Briggs and Stratton 5hp push lawn mower by Murray. I know it is confusing. I've, checked the flywheel key, disconnected the kill switch, put in new spark plug, and a new magneto coil. The coil is really rusty. Coils are a solid state unit – they can’t be repaired. No spark. I have no spark. I have a Honda push lawn mower. Common reasons a lawn mower has no spark, include: None of these tests are difficult and twenty minutes from now you’ll know why your mower has no spark. You can check the spark plug for spark by removing it, connecting the plug wire, grounding it off the engine and turning over the engine. A spark plug wire has a few particular problems that effect them, depending on a few variables, like how and where they’re stored. 6 yrs. It ohms out at about the same reading or maybe a little less than the new 3rd party coil. Okay try unplugging the connector circled in the following diagram. It does run then you a problem in the kill circuit. £13.14. Brand New Ignition Coil For STIHL FS120 FS200 FS250 FS300 FS350 4134-400-1301 . Next step it to dangle a screwdriver from your fingertips near the flywheel magnets. Spark testing is as you know a simple test, you won’t need any special tools here, but a spark testing tool does make the job easier and totally fool proof. Here's a different mower coil control wire, it's a very simple connection, the contact points must separate before the coil and plug will create a spark. This creates a spark. 2. there is a small resistor in the plug cap which may be faulty. No points or condenser. This problem apparently kills many Briggs Magnetron coils. I've, checked the flywheel key, disconnected the kill switch, put in new spark plug, and a new magneto coil. Lawn mower coils give lots of problems, I replace tons of them. The primary winding should have a resistance of just a few Ohms (measured between ground - either end of the iron core - and the To prevent any spark being generated by the coil it gets grounded all the time. The coil, on a laminated iron core, has two wires. It covers a ton of other common mower repairs you can easily do. FITS HONDA HR214 HR215 HRM215 GAS ENGINE MOTOR LAWN MOWER IGNITION COIL MAGNETO. There is nothing left to check. All I have ever done to it is a steering linkage, and a starter gear. If the engine is suffering from a weak (or no) spark, then the problem may be within the magneto coil. Mice love to chew on the wiring insulation. Early "F" engine coils were grounded to run. 6 yrs. took cover off and sanded any rust off flywheel . It's a Murray, with an 18 hp Briggs, and a 46" cutting deck. No spark. If you have no spark, it's most likely the coil. I've, checked the flywheel key, disconnected the kill switch, put in new spark plug, and a new magneto coil. There is nothing left to check. took cover off and sanded any rust off flywheel . A loose terminal will cause the engine to misfire or not start at all. It should be insulated from earthing until the handle control and throttle cable are closed past slow and the linkage then earths it. © 2010-2020 LawnMowerForum.com. Sure you can wrap them with insulation tape but it’s only a quick fix, the long-term repair is to replace. – Self explanatory, it’s a plug that’s contaminated by too much gas (flooding), carbon, or oil. working back, he's changed the spark plug, and now is looking to change the ignition coil - however, we cannot pin the thing down. Whether you start the engine with a pull rope or the turn of a key on an electric start motor, you're relying on the ignition system to produce a spark inside the combustion chamber. The common faults I see again and again include: Loose terminal – Caused by our old friend the trees, shrubs and fences. TheY have some ignition module flywheel tester thing..but the original one was bad. The new magneto coil has a new plug wire with it, also. Get shopping advice from experts, friends and the community! The second is the spark plug wire which is molded into the blob of plastic containing the coil. Hate to give up on it over a issue like this. I am still getting no spark after replacing spark plug and coil on honda mower. High School. The earlier coils are no longer being made. Wheel it into a shed/garage and shut the door and black out the windows. Can a spark plug have bad spark? £10.81. I recently picked up a free riding mower from a friend. The starter motor appears to work properly and the flywheel turns freely by hand. I installed an aftermarket coil for an f motor but have no spark Is this new style coil being shorted out somehow or did I get a bad coil out of the box? This turns the motor over but does not run. briggs stratton 6.5 no spark to spark plug? Forget all my last post about coils - I though that your machine was much younger. Coil control is a single wire with push on connection. Your coil is probably fine but you do have a condenser hidden under the round points box and it is quite likely to be the cause of your lack of spark. It's a Murray, with an 18 hp Briggs, and a 46" cutting deck. I tested the spark at the lead, no spark. For a better experience, please enable JavaScript in your browser before proceeding. But there seems to still be no spark. Pull off the spark plug cover, near the top or side of your mower's engine. The mower is in great condition and well taken care of. That is a later coil with an encapsulated condenser but as you are getting a healthy spark off the end of the HT lead it would seem that all is well in that department. I bought 3 of this style coil and installed the other 2 with no problems but the 4600 must have a different wiring system. Your replacement coil is most probably the grounded to stop variety and it can still be used on the earlier "F" engine mowers, just turn the on-off switch to "OFF" to run, and "ON" to stop. I checked the for spark and found none so I just replaced the coil with an OEM one from Jacks and still have no spark. There is nothing left to check … read more The second is the spark plug wire which is molded into the blob of plastic containing the coil. But try the coil with the kill switch set to the off position. Qualcast 35 s no spark at the plug ? So getting shoved into fences and trees is all part of a spark plugs life, and you thought you had it hard! I took a jumper wire and connected to the coil and then to the battery. I sure Could use any more advice on what to do. Check that the kill wire is not grounded - if not, then the coil is faulty. These riding mowers will last a long time if all you ever do is mow your lawn with it. The new one looked a little different than the old one, but it fit the mounting bolts so I installed that. Plugs have a tough job, they carry high voltages and live at the heart of the engine where it’s hottest. still no spark . My SRX75 JD riding lawn mower turns over but has no spark (sat outside for the last 4 weeks in the rain): Fuel OK, new spark plug. Bad plug gap – A spark plugs function is obviously to create a spark and it can only do this if the electrode gap is correct. reset coil to match book clearance. Yeah, this mower is about 14 years old. You will want to keep a couple of ignition coils for spares and the connecting wires if you are going to repair lots of lawnmowers for profit over the next few years. Why the Spark Plug Won't Fire on a Lawn Mower. This is the "3 Pole" unit (see pictures) which is NOT compatible with the later "2 Pole" units or the earlier "Points" Based System. Ignition Coil & Spark Plug Cap Fits GXV120, GXV140 & GXV160 Honda Engine Models. Since you’ve checked the spark already, I’m guessing you know the procedure. Make sure this is outside in a well ventialted area. how do I repair to get spark? we cannot find an engine serial number or specific type but so far we've determined that the engine is a tecumseh … I tested for a spark by holding the plug to the engine while turning the key. I am still getting no spark after replacing spark plug and coil on honda mower. Your replacement coil is most probably the grounded to stop variety and it can still be used on the earlier "F" engine mowers, just turn the on-off switch to "OFF" to run, and "ON" to stop. The coil is really rusty. (the mower has no spark). But apart from this difference, all other components will be very similar. It looks like the coil is the most likely culprit. This is a 5000.00 lawn mower. If you have no spark, it's most likely the coil. 3813 Honda Lawn Mower? new one is more then good..he said magnets can go bad but very rarely. The kill wire terminal must be down, close to the block. I believe you can check the coils with a multimeter, but I'm not sure how. he's had the mower from new for almost 20 years and enjoyed almost trouble free mowing - til now! There is a single wire that comes up and connects to the coil. No spark thru coil ... and still no spark. I know it is confusing. In over 11 years of dealing with Briggs rotary walk behind mower engines I have NEVER had to replace an ignition module/coil pack. Common reasons a lawn mower has no spark, include: Making matters worse for the plug, is its location – right out front of the engine. the wire going to the ignition unit (coil) is black and most of the harness the black wire is ground. For these tests you’ll need a plug spanner, an insulated pliers, screwdrivers and a spare plug is useful. When the spark plug doesn't fire or fires intermittently, your lawn mower engine won't start, or if it does start, it will stall. Page 2 of 2 - 18hp Kawasaki has no spark - posted in Lawn Mower Forum: I would not think the pulser coils would go bad. If you search this forum you will see evidence of newly purchased coils dead on arrival. Ignition Coil & Spark Plug Cap Fits GXV120, GXV140 & GXV160 Honda Engine Models. But still no spark. have a briggs stratton 6.5 front wheel drive lawn mower. Finally, take the coil off and clean the connection points where the coil and engine meet with a bit of sandpaper, both the coil and the engine. Check that the kill wire is not grounded - if not, then the coil is faulty. Briggs and Stratton 5hp push lawn mower by Murray. troy built riding lawn mower spark polug is not firing . Remove any covering over the engine housing. Carbon build up in the engine is a normal condition, fuel type, oil type, maintenance and plug type all effect how quickly it builds. Because this cap was loose, it created arching which has burnt the metal of the terminal cap. Later "F" engine coils were grounded to stop. Visually check the kill wire from where it leaves the coil, its exit from the magneto back plate to its termination on the throttle plate. – A spark plugs function is obviously to create a spark and it can only do this if the electrode gap is correct. In this post we’ll cover all the most common ignition system failures. Did you try switching the wires from the plunger switch? As we’ll have a helper cranking over the engine, that means the blade will be spinning, and even though the engine’s not running, it can still remove body parts, so, you know! Re: Lawn Boy won't start; no spark. To prevent any spark being generated by the coil it gets grounded all the time. i can't tell from the wiring diagram. In this post we’ll cover all the most common ignition system failures. You could check them with a volt meter. But more often than not, a damaged plug wire means rodents. If you don't see a spark on the tester, there may be a problem with the ignition coil of the flywheel to which it's attached. Oh yeah, the flywheel magnets seem strong too. I have no spark. When the bail lever pulls the assembly, it pushes on the switch removing on the ground connection to the coil. (Maybe the "redneck" method but recommended by my service manual too in the absence of a spark tester.) reset coil to match book clearance. Mower won’t start no spark? I assumed it was a faulty coil so I google searched the problem and found the following video http://www.pushmowerrepair.co m/testing-a-victa-ignition-coil/#comment-63247 which explains how to test the coil with an multimeter. The current issue was that the motor won't start. Just for the record I found the B&S parts list for this motor and found that I had the serial number wrong. This can be checked using a voltmeter (to measure resistance) but it is required to remove the wire connection between the coil and the points. £10.81. If the engine is suffering from a weak (or no) spark, then the problem may be within the magneto coil. The quick fix here, squeeze the terminal until it fits snugly on the plug. Installed the brand new OEM coil. I have ordered a new coil via the online store here, so I should be good to go. From there I jumped the solenoid and the mower fired up and ran. Flooding can be caused for a few reasons – blocked air filter, faulty choke, over use of choke, tipping mower over on its carburetor side, carburetor fault. Seeing that you have replaced the coil (I assume with a new one ) There are two possibilities here.. 1. Most mowers will use this type stop/start system, others manufacturers may incorporate the stop/start function with the throttle lever. I also tried other plugs with no spark. The insulator is the white ceramic material of the plugs body and as said earlier, plugs are at risk of being damaged by bumping into obstacles. The gap is important, too small or too big can lead to no starts or poor running. The only other thing was the kill switch which I bypassed, and still no spark. My Honda is 30 years old. This creates a … I'm at the end of my rope on this. If you have a spare wire try this first before purchasing a new ignition coil. Unfortunately, the engine was built 'down under', and the engine is upside down in the conventional sense - IE the flywheel and coil is on the BOTTOM of the engine, which means that the engine has to come off the mower for access.
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