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Replacing the Gearbox
Drive Belt
Service Interval: Every 50 hours—Check the gearbox
drive belt for wear or damage.
Visually inspect the belt
cracks, and signs of overheating. If the belt is
excessively worn or shows any signs of damage,
replace the belt.
Note:
Figure 10
shows the belt viewed from
underneath, but the belt can be checked, adjusted, or
replaced from either the top or bottom after removing
the relevant guard.
To replace the belt, do the following:
1.
Remove the idler pulley and belt.
2.
Install the new belt with the idler pulley.
3.
Engage the blade-control lever (PTO) and check
the belt tension.
The proper mower belt tension is 4.5 kg (10 lb)
of force to deflect the belt 13 mm (1/2 inch) at
the midpoint of the longest span
Important:
The belt must be tight enough
to not slip during heavy loads while cutting
grass. Over-tensioning the belt reduces the
life of the gearbox, belt, and idler pulley.
To adjust the tension, do the following:
A.
Loosen the locknut
B.
Rotate the turnbuckle.
Increase the length between the eyebolts to
increase the tension to the belt or decrease
the length to decrease the tension on the
belt.
C.
Tighten the locknut.
(Figure
10) for dirt, wear,
(Figure
10).
(Figure
10).
1. Locknut
2. Turnbuckle
12
Figure 10
3. 13 mm (1/2 inch) deflection
here
4. Idler pulley
g015422
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