632 left from wheel not spinning with power under load

[ers jungle buggy]

I'm really glad I bartered labor for this machine...... Just got the engine back in and running yesterday. Today I noticed the front left wheel wont spin under load and power but will spin if raised off the ground, the left rear spins with no issues. I would guess i sheared a key or stripped a sprocket, but i think the chain would break before the sprocket would strip. I also noticed the left front tire is larger than the front, not by much but enough to wonder why someone would do something like that. who knows, when i got this machine there was a carriage bolt used as the bucket tilt pin in the cylinder among other lack of maintenance. grease goes a long ways.

 

[Tazza]

It has been known to have the welds break between the spline and sprocket that slides on to the axle. There was a member here a few years back that had this issue, he took it out, welded it up and worked great.
You really need to get into the chain case to know for sure what let go.