Posted by Goose on May 18, 2013 at 15:05:08 from (70.197.194.37):
Have a garden tractor with a 24 hp B&S OHV engine.
Went to use it this morning, and it ran on only one cylinder and made a "popping" sound in the air cleaner. Did some trouble shooting and found a bent push rod.
This engine has about 300 hours on it, and has never been opened up, so why would a push rod decide to bend? I can operate the rocker arm and valve by hand, and it feels like it should. I straightened the push rod and put it back in. It bent again when I turned the engine over by hand.
I can't see any reason for the rod to bend unless it's a defective rod. Even if the key sheared in the flywheel, all that would do would be throw the engine out of time, it wouldn't cause a piston to hit a valve.
I'll admit, I've never had one of these OHV's apart and I'm not sure what drives the cam.
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Today's Featured Article - Grain Threshing in the Early 40's - by Jerry D. Coleman. How many of you can sit there and say that you have plowed with a mule? Well I would say not many, but maybe a few. This story is about the day my Grandfather Brown (true name) decided along with my parents to purchase a new Ford tractor. It wasn't really new except to us. The year was about 1967 and my father found a good used Ford 601 tractor to use on the farm instead of "Bob", our old mule. Now my grandfather had had this mule since the mid 40's and he was getting some age on him. S
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