Export thread

I have a 3.5hp Briggs on a Snapper. I checked and it was getting no spark. I cleaned the contacts on the magneto and flywheel and still nothing.

How should I check to see if the "Kill Switch" is grounded out? Before I go buying a new magneto.

I don't know where it is.


Engine s/n: 92908-0703-01 7206168

unplug the little wire going to the coil/magneto, that is the kill wire. Then of course you check for spark correctly....

Re-looking at the date on your engine, your engine came out with points originally. Does it still have them? If it does, just get the newer electronic coil, clip the wire to the points, mount/gap the new coil and go mow.

Snap a pic or two of what it looks like under there too.

hurst1979olds said:

I have a 3.5hp Briggs on a Snapper. I checked and it was getting no spark. I cleaned the contacts on the magneto and flywheel and still nothing.

How should I check to see if the "Kill Switch" is grounded out? Before I go buying a new magneto.

I don't know where it is.


Engine s/n: 92908-0703-01 7206168

Click to expand...

Have you checked the points under the flywheel

Fish said:

unplug the little wire going to the coil/magneto, that is the kill wire. Then of course you check for spark correctly....

Click to expand...

Correctly, you mean hold plug in hand and pull cord?


I will snap a pic of it with the cover off. and Will check the points when I get a chance.

No!!!!

If you have points, just pop on an electronic coil. You need to pull the flywheel to get to the points, if you just buy the coil, leave the flywheel alone........

Here it is with the flywheel cover off. There's 2 wires off the mag. One goes to ground the other goes under the flywheel. So it still has points? Should I pull the flywheel which is easy for me to do. Or just put a new mag without point in.....anyone know that part number for this engine?

Gawd damn. With a pic like that, who could tell......

hurst1979olds said:

I have a 3.5hp Briggs on a Snapper. I checked and it was getting no spark. I cleaned the contacts on the magneto and flywheel and still nothing.

How should I check to see if the "Kill Switch" is grounded out? Before I go buying a new magneto.

I don't know where it is.


Engine s/n: 92908-0703-01 7206168

Click to expand...

So where in the hell did you "clean"????

If I got an electronic coil. How to I wire that ground wire.

I cleaned the magnets on the flywheel and the magnets on the magneto. Nothing else as you can see.

Yeah,one cannot accuse you of over cleaning!!!

When I say clean the magnets, I mean I sanded the contacts to make a better signal.

When I put an electronic is it just a drop in. How do I wire the kill?


http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=140442458387&ssPageName=ADME:X:RTQ:US:1123 Will this work?

No that is the old style that uses points, search for Briggs #398593 or #496914, Just bolt it on, gap it with the card in the package or business card, and hook up the kill wires from the carb and the chute sensor to the small terminal on the coil.

Coil is ordered

I cleaned the contacts on the points and reset to .020. Still no spark. Good thing I ordered a new electronic coil.

I got the coil in. And it now fires and runs on either. The carb diaphragm should be here today.....What part number plug should I use?

Originally was a cj8 then they switched their l-head plugs to a j19lm.

It runs after 10-11 years. Just need a throttle cable and governor spring and adjust the carb. It's hard starting. Choke flap needs to be held open to start.....any idea as to what that is??

I ordered a governor spring and new throttle cable. But man this thing is a bear to get started. I have to keep the choke flap open with a screw driver, and give it a shot of either. Then it will sputter and I have to mess with the throttle to keep it running, then its fine after that and it runs good.

I tried adjusting the screw on the side and got it to idle good and everything. THen I shut it off and then bango, wont start. Got to pull a million times, prop open the choke again and then it will fire.


Any ideas or suggestions?

Got any compression?



Did you follow the manual when you went through the carb? When putting the carb back on, before you
tighten the carb bolts, you should put a bolt in the carb throat to hold the choke flap open, then tighten the screws.

Fish said:

Got any compression?



Did you follow the manual when you went through the carb? When putting the carb back on, before you
tighten the carb bolts, you should put a bolt in the carb throat to hold the choke flap open, then tighten the screws.

Click to expand...

I didnt check the compression, but I can feel it with my finger over plug hole.

I did follow the sequence when tightening the screws and held the flap open.

What is the setup for the idle screw. The diaphragm gasket said 1 turn from seated to get it started.