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8. Install the mower belt (Fig. 47).
9. Check the belt guide under the engine frame for the
proper adjustment (Fig. 47).
Note: The distance between the belt guide and mower
belt should be 1-1/4 inch (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.
4. Remove the idler pulley and the worn belt (Fig. 47).
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 36.
Note: The proper mower belt tension is 10–15 lbf.
(44–67 N) with the belt deflected 1/2 inch (13 mm) halfway
between the pulleys (Fig. 48).
2
1
Figure 48
1. Mower belt with 1/2 inch
(13mm) deflection
8. Engage the blade control (PTO) lever.
9. Check the clearance between the bell crank and the
transmission output shaft (Fig. 49).
1/2 in.
(13 mm)
m-4750
2. Idler pulley
35
1
4
5
Figure 49
1. 1/16–1/8 inch (2–3 mm)
2. Bell crank
3. Transmission output shaft
Note: The clearance should be 1/16–1/8 inch (2–3 mm).
10. Remove the hairpin cotter and the clevis pin from the
bell crank.
11. Rotate the clevis clockwise on the rod to increase the
clearance; rotate it counterclockwise to decrease it
(Fig. 49).
12. Disengage the blade control (PTO) lever.
Note: If the assist arm does not contact the front stop on
the mower deck (Fig. 50), adjust the clevis to bring the
bell crank closer to the transmission output shaft
(Fig. 49).
5
Figure 50
1. 1/2 inch (13 mm)
deflection here
2. Assist arm
13. Check the belt guide under the engine frame for the
proper adjustment (Fig. 47).
3
2
6
m–3860
4. Hairpin cotter
5. Clevis pin
6. Clevis
4
3
2
1
m–4739
3. Front stop
4. Locknut
5. Turnbuckle
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