I'm talking about the two drive belts right at the engine next to the flywheel. Here's the thing, previously I totally wrecked my crankshaft bearing on the flywheel end of the engine. I assume that I was running these belts too tight putting too much down force on the crankshaft. This resulted in the charging system stator and magnets contacting each other and it all mashed into a big mess! I found an complete new engine for a good deal and installed it. All works fine except now I'm pretty cautious about the tension of these two belts. Therefore when I want to travel faster or pull something heavier, the belts want to slip. I had worn the other engine out in approx 250 hrs. Engines and other parts are expensive for this unit. Anybody care to comment on this situation? Has anyone else had this issue? Did my crankshaft bearing problem have anything to do with belt tension?