dollar bill
You can check the Briggs and Stratton website for the exact specs for you engine number. OR Most people use a standard business card between the flywheel and coil. That works fine. Just line up the coil flanges with the magnet part of the flywheel and the put the business card between them. The magnet will hold it in place. Then tighten the bolts holding the coil and you are ready to go.
For a Briggs and Stratton motor 3.5 motor used straight gas and oil in the crank-case, there is no ratio.
It just unscrews from the motor
.006 intake and.008 exhaust
I found it. The Norma Co. made them for JCP, which was bought by the Murry Co. which went out of business and some of its assets were bought by Briggs and Straton.
there should never be oil in the carb. if there is then you have a problem. have you tipped the motor on its side on the carb side?
rebuild carb
The coil is under the cowling on top of the motor where the flywheel is.
20 thousandths of an inch will suffice. Fairly forgiving ..........loosen the coil and place a standard business card between flywheel and coil. Allow magnetic force from flywheel to pull together and sandwich card between flywheel and coil. Tighten coil. This will work fine.
Yes, I'm getting no spark on my roto tiller which is a Sears Brand with a Briggs/Straton motor. Does the machine have a magneedle and would that effect the spark?
The easiest way is to use a standard business card between the coil and the magnet part of the flywheel.
SAE 10w30. I recommend synthetic for all air cooled engines.