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b&S 17.5 flywheel stops

#1

L

loswalt

mower was running and then stopped all of a sudden with a metal type sound. the blades were not engaged and it was sitting when this happened. i can turn the flywheel about 2 rounds counter clockwise and when i go back the other way after those turns it just stops. i can hear something hitting metal. doesnt sound like something is broke but like it hits a wall. I have tried to turn it with a breaker bar and it will not move past that one point. I have no idea what it could be at this point, any ideas?


#2

Scrubcadet10

Scrubcadet10

Something let loose in the engine sounds like. Check your oil?
Take the spark plug out then try spinning it, if spins like normal more than likely a valve issue. While the plug is out see if you can determine if the piston still goes up and down in the cylinder.


#3

L

loswalt

The oil was good but have not taken the spark plug out yet. The hard stop it is doing doesnt seem like the plug would fix anything. like a pipe hitting a metal pole kinda thing


#4

T

Tinkerer200

Outside possibility, magnet came loose in flywheel. More likely, threw a rod. Remove spark plug as said, stick screwdriver or dowel in plug hole and see if piston is moving when you turn flywheel. No, rod, yes maybe flywheel magnet.

Walt Conner


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