2

SAE-30 is specified as the lawnmower is basically used in summer. So, using SAE10W-30 will be fine as it has the equivalent hot specification ie the "30" part.


2

Two possible answers here. 1) Your system has a high mounted tank and fuel is gravity fed to a fuel bowl at bottom of carburetor. Its possible old fuel clogged a main jet and your tip over test bypassed the blockage with enough fuel to run for a few minutes. Note a common fault is blockage at fuel bowl inlet jet. 2) Your system includes a membrane ...


1

It's clear to me that you have identified the main cause of this: Fuel is NOT getting into the engine. You noted that there doesn't appear to be any fuel in the fuel filter, so the next step is to determine WHY that is the case. Is there a fuel shut-off valve? Is there a fuel screen that is blocked? Is the fuel line pinched or clogged? What about the ...


1

I have noticed with my B&S mower that if i fill the fuel tank too high, some fuel will pass into the housing for the air filter, and it won’t run. I’m careful now to not fill the tank to the top and the problem has gone away. However, I’m not sure that my explanation is accurate (I’m lazy—once a problem is gone I lose interest in determining the cause)....


1

I'd suggest your float is stuck and allowing unfettered fuel to access the engine without flooding it (somehow). An engine will have grey-ish smoke when there's way too much fuel. If it's just enough to run rich, it will smoke black. The difference being the grey is raw aerated fuel coming out, where the black is partially burnt. I would bet if you pulled ...


1

The "alternator" is built into the flywheel - manufacturers tend to minimize components on smaller machines and separate alternators are used but tend to be on engines above a certain size as that also means fan belts etc which if required to drive other components becomes viable.


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