The length spec of lawn tractor v -belts is the OD of the belt.
You can take a piece of string and measure the length of the old broken belt.
I also keep a upholstery cloth tape measure handy (from wal mart sewing section for about $3) and
BEFORE installing a new belt I measure the OD with the upholstery tape. I've found lots of new belts that are not the length specified when ordered.
When replacing v belts I measure the OD length of the old belt in use and compare it to the part number length and then measure the new belt length when received. At the price of V-belts it saves $$'s to keep a constant heads up.
While the belt if off is a good time to check the pulley and spindle bearings to make sure they are Ok.
A owners manual surfaced over at sears parts direct at this link.
You might want to investigate such. I seen couple other downloads but I did not view them.
Also you need to keep a heads up about that type drive (variator type)requires that both drive belts be replaced as a set to get proper drive travel. I did not read the manual but this is usually so with that type drive.
Link at sears parts direct.
click on manual and then the 769-01XXXX
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