Press firmly with your finger on the V-belt between the crankshaft pulley and the generator.
If the tension is correct, the belt should deflect only 5 mm, a new belt - 2 mm.
If the belt is tensioned correctly, you should check whether the generator tension bolt and the pivot bolt nut are tightened properly.
The tension of the V-belt is checked between the V-belt pulleys of the crankshaft and generator (see arrow).
V-belt tension
Loosen the generator bracket bolt.
Place a powerful screwdriver between the engine and the generator from below.
To tension the belt, pull the generator away from the engine from below.
At the same time, tighten the generator bracket adjusting bolt with the other hand.
If the generator cannot be moved, the pivot bolt must be loosened slightly.
After tensioning the V-belt, let the engine run for a short time, check the tension, and tighten it again if necessary.
The V-belt tension is best adjusted from below, when the machine is raised on supports. Loosen the nut (3), shown in the photo with a wrench attached. The adjusting bolt (2) cannot turn. Take a lever or rod from the on-board tools, move the generator (1) outward, in the direction of the arrow. Tighten the nut of the adjusting bolt.
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