Weakening
1. Remove upper toothed belt guard.
2. Loosen the 3 screws securing the water pump. Tilt the shelf to the right with the pry bar and loosen the toothed belt.
Tension
Turn loose pump to the left (up) and tension the toothed belt.
Checking the toothed belt tension
1. The toothed belt, when exposed to it with thumb and forefinger, in the middle between the camshaft drive gear and the water pump, must be twisted by 90° (1/4 turn). If more, then tighten the belt.
2. Tighten the water pump mount to 20 Nm (the arrows indicate the water pump mounting bolts).
3. Rotate the crankshaft 2 turns and check the toothed belt tension, adjust if necessary. To do this, engage 5th gear and push the machine on level ground, or lift the machine from the front and rotate the front wheel.
4. Install the toothed belt guard.
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