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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. 41).
12. Disengage the blade control (PTO) lever.
Note: If the assist arm does not contact the front stop on
the mower deck (Fig. 42), adjust the clevis to bring the
bell crank closer to the transmission output shaft
(Fig. 41).
5
Figure 42
1. 1/2 in. (13 mm) deflection
here
2. Assist arm
13. Check the belt guide under the engine frame for the
proper adjustment (Fig. 39).
Note: The distance between the belt guide and the
mower belt should be 1-1/4 in. (32 mm) when you
engage the mower belt. Adjust the mower belt as
necessary. The disengaged belt should not drag or fall
off the pulley when the guides are properly adjusted.
Adjusting the Mower Belt
Tension
Service Interval/Specification
Check the belt tension after the first 8 operating hours and
25 operating hours thereafter. Check the belt tension after
every 50 operating hours.
Important
The belt must be tight enough to not slip
during heavy loads while cutting grass. Over tensioning the
belt will reduce the bearing life of the belt and the spindle.
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.
4
3
2
1
m–4739
3. Front stop
4. Locknut
5. Turnbuckle
3. Loosen the locknut on the turnbuckle (Fig. 42).
4. Rotate the turnbuckle toward the rear of the mower to
increase the tension on the belt. Rotate the turnbuckle
toward the front of the mower to decrease the tension
on the belt (Fig. 42).
Note: The eyebolt threads on both ends of the
turnbuckle should be engaged a minimum of 5/16 in.
(8 mm).
Adjusting the Blade Brake
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. If necessary, adjust the spring mounting bolts so that the
blade brake pad rubs against the pulley edges (Fig. 43).
2
1. Spring mounting bolts
2. Blade brake pad
4. Adjust the nut at the end of the blade brake rod until
there is 1/8–3/16 in. (3–5 mm) between the nut and the
spacer (Fig. 43).
5. Engage the blades, and ensure that the blade brake pad
no longer contacts the pulley edges.
34
3
1
Figure 43
3. 1/8–3/16 in. (3–5mm)
m–4727
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