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Replacing the Traction Belt
1. Disengage the blade control (PTO) lever and set the
parking brakes.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Raise the rear of the machine and hold it up with jack
stands.
4. Remove the mower belt (Fig. 39).
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6
4
Figure 39
1. Idler pulley in slot
2. Traction belt
3. Mower belt
5. Loosen the pivot bolt enough to slide the idler pulley in
the slot and remove the traction belt from the engine
and the drive pulleys (Fig. 39).
6. Install the new traction belt around the engine and the
drive pulleys (Fig. 39).
7. Slide the idler pulley in the engine frame to tension the
traction belt (Fig. 39).
8. Install the mower belt (Fig. 39).
9. Check the belt guide under the engine frame for the
proper adjustment (Fig. 39).
Note: The distance between the belt guide and mower
belt should be 1-1/4 in (32 mm) when the mower belt is
engaged. Adjust the belt if necessary. The disengaged
belt should not drag or fall off the pulley when the
guides are properly adjusted.
Replacing the Mower Belt
1. Disengage the blade control (PTO) lever and set the
parking brakes.
2. Stop the engine and wait for all moving parts to stop
before leaving the operating position.
3. Remove the knobs and the belt cover on the mower.
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2
3
4
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4. Belt guide
5. 1-1/4 in. (32 mm)
6. Mower belt
33
4. Remove the idler pulley and the worn belt (Fig. 39).
5. Install the new mower belt.
6. Install the idler pulley.
7. Engage the blade control (PTO) lever and check the belt
tension. Refer to Adjusting the Mower Belt Tension,
page 34.
Note: The proper mower belt tension is 10–15 lbf. (44–67
N) with the belt deflected 1/2 in. (13 mm) halfway between
the pulleys (Fig. 40).
2
1
Figure 40
1. Mower belt with 1/2 in.
(13mm) deflection
8. Engage the blade control (PTO) lever.
9. Check the clearance between the bell crank and the
transmission output shaft (Fig. 41).
1
4
5
Figure 41
1. 1/16–1/8 in. (2–3 mm)
2. Bell crank
3. Transmission output shaft
Note: The clearance should be 1/16–1/8 in. (2–3 mm).
1/2 in.
(13 mm)
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2. Idler pulley
3
2
6
m–3860
4. Hairpin cotter
5. Clevis pin
6. Clevis
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