Four
I dont know what it is set on
If a 28 cu in engine, then 1 1/2 qts.
Depends on the model and type of the engine, but between 3000 and 4000 rpm top-no-load speed.
Based on everything I have read from Brigs and Stratton, and talking with some small engine repair guys I know, the 342cc engine puts out about 11-12hp, and the 420cc engine is about 15hp. Hope this helps.
Yes, and I highly recommend you use synthetic in any air cooled engine. Use SAE 10W30 or SAE 30 weight.
at brigs
who built schooners
3omm
One reason would be that the float valve may be sticking in the carburetor and letting gas flow by and into the engine when the mower is not running. The other thing I have seen cause this is one cylinder is not firing and that cylinder lets the gas by the rings and into the crankcase. Most of the time it is the first thing I listed. You can change the oil and install a shut off valve in the gas line. After you mow just shut off the gas valve. That will let you know if that is the problem. If it takes care of it you can either have it fixed or just use it with the shut off.
Just don't touch it, for it could have a disease.
48 oz
the plug gap for generator is 0.70 mm