You can get that info on the Briggs and Stratton website.
Just go to:
http://www.ereplacementparts.com/briggs-and-stratton-parts-c-16758.html?gclid=CPCZj4vGr58CFZdM5Qodp3bDsA
and enter your engine model number.
What is clearance magnetic 15 horse power briggs and stratton
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.
56 ounces
I don't recall right off what the recommended range of compression is for a 15hp Briggs, but 120lbs is certainly sufficient to start and run th engine. If its a 4 stroke it will be around 10.0:1 10-28-08 Right-o, 120 is great. Briggs no longer releases comp ranges, but states a minimum of 60 to run. Depending on model, that's probably a 7:1 or 7.5:1 engine. Briggs are designed w/low comp ratios for durability, resistance to detonation, and low fuel-grade requirements.
Spark plug gap on this engine is .030
thats the same engine and same weight.
officially a 15hp engine max. But, if you take a old 2 strokes, you can put more.
About 15HP
15hp
a 9.9hp can be converted into a 15hp by putting a 15hp carbi on the 9.9 or the little valve that letts the fuel through can be change to a bigger one off a 15hp but that only makes it a 12hp orso. to make it a 15 you need to change the megaphone or exhast whicth can be done but it is very hard. this gives it more power just like when you powerband on a motobike
The maximum speed of the Isard 300 2cyl 15hp 1961 is 90 miles per hour.
To wire up the stop switch on a Yamaha 15A 15hp outboard, locate the stop switch terminals on the engine's wiring harness. Connect one terminal of the stop switch to the kill switch wire, and the other terminal to the ground or the engine block. Ensure all connections are secure and insulated to prevent corrosion. Test the switch by starting the engine and then engaging the stop switch to confirm it halts operation effectively.