I attempted to start my rideing mower, the engine was cold and it
backfired, it did start eventually after more than usuall cranking. I did
not apply the choke but had the throttle wide open.
I normally apply full choke to a cold start,and a couple of cranks its
it fires up.
Now it seems that the engine is hard to start since the backfire, when
The carburetor has a solenoid valve on the under side of the bowl that
is supose to stop back fires when the engine is shut off. If you don't stop
the engine in wide open throttle,( as the owners manual says) it will back
Briggs 13 hp. 1 yr old.
You may have sheared the key holding the flywheel to the crankshaft and
the flywheel has rotated from its designed alignment with the shaft.
That will misstime the magnetic coupling of the flywheel magnets with
the magneto coils and cause a weak spark at cranking speeds.
At least that would be the first place I'd look. Pull the flywheel and
see if the key is sheared.
My name is Jeff Wisnia and I approved this message....
I called the repair shop today and he thought it may of blown a head
gasket.I supose if the head gasket were blown that would cause the piston to
not have the suction to draw fuel in on the pistons down ward stroke, thus
makeing it harder to start.
If thats the case what cause the backfire.
maybe the original backfire was caused by the same problem that is cuasing
it to be hard to start now ?
The flywheel key would be the first to check , Of course a blown head
gasket can easily be checked be doing a compression test.
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