149 broken
 

Used the 149 all summer with the rototiller, now that summer is over I've put the snowblower on and waited till our first good snow. Well, we got it, so I got the cub running let it warm up a few minutes, opened the barn door and got about two feet out and heard a loud clunk and the engine quit. Engine turns over, can't feel anything coming from the spark plug hole, felt around the head as I was cranking, didn't feel anything,don't know what to think. Any ideas?

So no air movement out the spark plug hole ( with the plug out ) ?

That leads me to believe the connecting rod let go. :bash2:

Are you sure the engine is turning over? You did break a spiral pin or the key way on the flywheel shear off? Did you crank it with the starter? Is it making any banging or anything while cranking?

doesn't make a sound while turning over

Broken rod. Bad news man..... sorry. :Cry1:

sounds like a broken connecting rod

I was on a 122 about 1988 or 1989 when the engine suddenly stopped. I was on level ground in 3rd gear going from one house to another in the neighborhood. I tried restarting the engine and it was turning over really fast. We towed it back and I discovered that the rod shattered into hundreds of pieces. There was no warning, there was no bang. The engine just stopped.

I rebuilt the engine and it was sold running that way.

not sure what I'm seeing down the spark plug hole but something in moving up and down. not familiar with the internals of this engine.

It's one of the valves, the exhaust one I think.

not sure where the spark plug hole is on a 14hp but you might be seeing the valves moving.