85 250CR cutting out at full throttle

Bill, How many gallons of gas have you run through your chainsaw in the last 32 years? Compared to a 1985 Husky dirt bike.

Marty

I guess as Bill did chain saw competitions quite a few, the real problem is us expecting a 30 to 40 year old ignition to work as it did new, mind you as I had Lucas (Prince of Darkness) and Wipac ( Wipe-out) electrics on my bikes when I was a kid that hardly worked when 5 years old SEM (Seldom Electricity Makes) is probably quite reliable?

the SEMs have a high output lighting coil that gets hot....real hot. i was advised to keep the magneto clean in 1984 and i religiously used to keep the unit clean and never had any problems. .....in the three years i had it

Remove stock cap. Throw in trash. Cut 1/2" off spark lead wire. Screw on NGK cap.
Also, make sure you don't have a screen spark arrestor in there that is clogged.

do you recommend hot soapy water

good call on the screen

i used to clean it with contact cleaner.....