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Possible for the anti vibration counterweight to bust the case?

#1

J

J4541

Briggs and Stratton 16.5 hp. Crankcase cracked. Was curious to find out what happend so i took the engine apart. The counterweight link was in a million pieces. The rest of the engine looked great. Anyone have any idea what happend?


#2

F

flash_os

Do you have pictures?


#3

J

J4541

flash_os said:
Do you have pictures?
Click to expand...

I do not have any pictures


#4

T

Tinkerer200

Sure, the bushing in the link attaching the counter weight to the eccentric on the crankshaft wore out and the play created resulted in a hammering action which finally resulted in the weak point, the back side of the link breaking and sending the counter weight into the crankcase casting knocking a hole in it.

This happens with age but also from poor lubrication discipline, abuse.

Walt Conner


#5

J

J4541

Tinkerer200 said:
Sure, the bushing in the link attaching the counter weight to the eccentric on the crankshaft wore out and the play created resulted in a hammering action which finally resulted in the weak point, the back side of the link breaking and sending the counter weight into the crankcase casting knocking a hole in it.

This happens with age but also from poor lubrication discipline, abuse.

Walt Conner
Click to expand...

Thanks for the reply Walt. Its 8 yrs old. Ive kept the oil changed but definitely havnt babied it.


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