Answers
We replaced the flywheel key yesterday and we bumped the magneto, and i have looked everywhere and i have not found out the space that should be between the magneto and the flywheel. Could anyone tell me the space or give me a link, thanks
.003 to .008 inches. The gap is not critical so long as there is a gap. Use a match book cover as a gauge. Just make sure when you turn the flywheel there is a gap all the way around.
this will show you how to change youre flywheel key.
ive ruled out every other ignition problem. if i spray starting fluid into the carb it will turn over, but the initial spark isn't hot enough to start it. its runs well when its started with starting fluid.
On the briggs engine the ignition coil is on the outside of the flywheel. The gap is .003-.008". As long as there is a gap it is good. If you have spark than that is probably not the issue. I think that you have a fuel problem. Either a plugged line or a dirty carburetor.
I have a riding lawn mower that i bought and im trying to fix up, i have some new stuff on it like a starter generator and a spark plug. there is fresh gas, fresh oil, the engine turns over, the carborator is clean, the air fillter is clean, everything on the thing works except the magneto. It will not give me a spark. I dont Know much about magnetos so this is the worst job for me, i know everything else about the mower, though. i do not have a manual for it, either. What i can say is that there is a wire going under the fly wheel and it is cut where it is going in and where it comes out,suppossedly connecting to the magneto it is cut, so there are no wires touching the magneto. i dont know what these are or what theyre for. I spent a lot of money on this mower. (i bought the mower its self, a new starter generator, and stuff like air filter, spark plug, gas, and oil) Well thats a lot of money for an 11 year old kid so i dont want to spend anymore, so if u can help please do
ok the model of the engine is220707, type as 0140-01, and it is a craftsman sears mower with a briggs and straton engine. Thats all i have for it UCANTCME
when you have the magneto off, rotate engine until metal pick up is aligned with where magneto is placed, if you still have the box that your spark plug in, rip it apart and use 1 side if the box only, place it on your pick up on the flywheel, then sit your magneto on and tighten. not sure of exact clearance but it is around the thickness of 1 side of plug box.if this doesn't work chances are your ignition(magneto) may need replacing. hope this helps.
Sure you can... Just spin it up and see if you get a shock. If you do, then it's working
be sure the magneto is the problem a 1976 uses points and a condenser unit for spark the Magneto just provides the link to the spark plug. Either way the motor housing will need to be disassembled fan shroud air filter all the exterior covers around the motor to gain access to the condenser and points. if you are not sure of what you are doing do not try it the points need to be set at top dead center of the compression stroke at the correct gap using a feeler Gage you will need to get that info as to the correct spec you may just want to take it into a shop to have the job done a 1976 is an old motor how often do you use the machine and is it worth fixing weigh those items first.
I have a lawnmower with Briggs amp; Stratton 375 Sprint engine that ...
There will be a magnet on the flywheel that passes the magneto (the spark plug wire leads from the magneto). If a mower is left out in the elements, the facing surfaces of the magneto and flywheel can rust, which prevents the magneto from generating the required spark. You can clean off the rust with emery paper or (my preference) a fine drywall sanding sheet. A LIGHT coat of oil on the sanded surfaces will help prevent more rust.
There are a number of possible causes; this is only one.
There will be a magnet on the flywheel that passes the magneto (the spark plug wire leads from the magneto). If a mower is left out in the elements, the facing surfaces of the magneto and flywheel can rust, which prevents the magneto from generating the required spark. You can clean off the rust with emery paper or (my preference) a fine drywall sanding sheet. A LIGHT coat of oil on the sanded surfaces will help prevent more rust.
...Would an armature-magneto just suddenly stop working? - Tech ...
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I was right smack dab in the middle of mowing the front yard and the engine just died - no sputtering, just died..I know that the carbs are fine, so instincively I knew it was probably something electrical (for some reason, all my motorized things have electrical problems - motorcycle and the family van!). Anyway, I pulled the plug and checked the spark by grounding it to the engine and got nothing. The terminal cable end seemed a little loose, so I tightened it up with some needle nose pliers and got nothing still. The spark plug was new as of last year and looked fine. Just to rule out the easily fixable things, I got another one. When I put it in and tried to start it still nothing..so I pulled it back out and tested the spark against the engine again. I was not getting a spark, but I wiggled the cable and suddenly got some spark, it was not the strongest ever - was white and a little weak. I put the plug back in and it worked! However, only for about 10 more minutes, then the same thing happened. But this time, wiggling did not work. Now, my question is, would the amature simply just stop working like this? I can work on cars and can work on motorcycles, but these small engines are a little new to me. I understand the principals of most of it, but some of the electrical is a bit trickey for me (for instance, not sure what it is, but there is a bolt on the front of the engine(outside) that is grounded to the frame, but if it is not bolted to the engine, it will not even turn over.) The only test is to remove the "shorting wire" from the coil, the small black wire that connects to the spade terminal, from the coil. Crank the engine over with the shorting wire remove, about .012 (business cards work great to set this) coil to flywheel air gap and it should have spark, if not, replace the coil. If the problem is in the high tension lead, plug wire, then it will still need to be replaced as the wire is not serviceable on B&S coils.
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YOU DONT SAY: Zen and the art of starting a lawnmowerSouthern Idaho Business - Aug 18, 2010
YOU DON#39;T SAY: Zen and the art of starting a lawnmowerAs evidence, I would submit a 2007 John Deere walk-behind lawnmower of my acquaintance. It doesn#39;t start. Heck, it hasn#39;t really started since, well, 2007.