briggs 1977 #80212 3 hp with no spark

[minibeer]

picked up a briggs 3 hp #80212 with no spark, no shock when turned over and holding wire, cleaned rust off fly wheel. have not cleand points yet, think coil is shot , condenser??? what next? any help would be good thanks

 

[buckeye]

Get after those points.Easy cheap stuff first.:shrug:

 

[minibeer]

my next move is the points, if that don,t work whats next

 

[Rapidrob]

Ohm out the condenser and your coil. One will be bad if the points are good.

 

[oldfatguy]

more than likely it's the points. just take them out and file the contacts or give them a light touch on a bench grinder with a smooth grit wheel. Make sure that the plastic plunger part is good. I had an engine once with a bad one and it drove me nuts trying to get it to spark because the points weren't closing.

 

[Outlaw Ace]

I convert mine to magnetron and never have to remove a flywheel again, easy and not terribly expensive. Got the last one for $15 delivered off Ebay

 

[Rapidrob]

What is 'magnetron"? In micro-waves it makes sense, in ignition?

 

[Rapidrob]

Never mind, I looked it up. It's just a name that B&S decided to use.
Description of a Magnetron Ignition | eHow.com

 

[minibeer]

cleaned and filed points cleaned coil to block still nothing

 

[buckeye]

You have no spark at all?
Plug wire? Condenser???

 

[minibeer]

no spark at all , also flywheel is a pain in the butt to get back on , key kept coming out , any secrets on that?

 

[buckeye]

Slide it on then put the key in.
You don't have the kill wire grounded somewhere?

 

[minibeer]

kinda of new at getting back into these motors , does kill switch run from block to condensor?

 

[Outlaw Ace]

Buy a solid state ignition and get it running.:thumbsup:

 

[minibeer]

are they on ebay? solid states? can you give me more info on them? i would like to eliminate points and other stuff thanks

 

[minibeer]

what # is the solid state that will work on this motor?

 

[oldfatguy]

check the wire coming from the coil to the condenser. Sometimes the insulation cracks on it causing it to ground out. Fix it with heat shrink tubing. Also check the connections on the condenser and make sure that they are not touching the block. I haven't seen a point ignition briggs yet that couldn't be made to get spark after cleaning up the parts. Are you sure that the points are clean and gaped right ? and that they open and close like they should ? sometimes that plastic plunger goes bad and won't work the points.

 

[Outlaw Ace]

Item #290714547089 is a 3.5hp coil and has the tab for the kill switch and is $14.99 OBO with $9 shipping. I have a few but keep em for the same reason you need one. Your local mower shop will have one too most likely. Good luck:thumbsup:

 

[minibeer]

thanks!!!!

 

[Outlaw Ace]

thanks!!!!

No problem, I got a bunch of 2 to 3.5hp briggs and have gotten better at getting em going as time goes by but will not fool with points. I still have my high school small engine class book which is a B&S book, it really helps me with many tasks. I am building a world shaker of a 3hp but it will take time, I plan to see about having a cam welded and reground and do the eyebrows as well as milling the head myself with glass and sandpaper. I have an aluminum flywheel off a 3.5hp generator horizontal shaft engine which I never saw before and it's an exact replica of a steel one. Also a flojet carb will be used rather than the stock one. Should make good power.:thumbsup: