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On a valve-in-block 8HP with an RJ19LM or equivalent plug, it is 0.030"
It is around a 5 hp. *this is incorrect: the ones they sell currently would be more in the 7.5-8hp range, seeing as an equally featured 190cc briggs and stratton engine is 6.75hp on a lawn mower the additional 15cc bump it up to around 8hp.
Capacity is 36 ounces. I highly recommend you use Synthetic oil in this air cooled engine. Change it once each year.
Briggs straitton
one reason for this is the air inlet on the petrol cap is blocked or too small causing a vacuum in the petrol tank and starving the motor.
About 8hp (5 kW).
Our Techumseh 8HP has a Champion J8C
The governor is driven by the cam gear (in turn driven by the crank gear) and is attached on the engine sump (side of engine opposite the flywheel). There is no need to remove it, you can simply de-activate it by removing the linkage that goes to the carburetor that opens or closes the throttle as dictated by the governing system.
There are two types, both on the camshaft. Lower HP (around 8HP or less) typically have a lobe with a bump on it that keeps a valve (often the exhaust) open at RPMS under 250, aiding in starting because the valve does not fully close) Larger engines have a counterweight on the cam that swings "up" at the same RPMs are "removes" the high spot achieving the same affect as above.
318cc. is 8hp. 305cc.is probably between a 6 to an 8hp.
Engines run by burning gas fumes- fire is hot- exhaust is therefore hot. Hot gases running through metal pipes will make the metal hot. Hence the reason for "Hot, do not touch" stickers on many small engine exhausts.
What year is the 8hp Mercury outboard with serial o6156590 ?