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7. Engage PTO lever and check the clearance between the
bellcrank and the transmission output shaft (Fig. 48).
Space should be 1/16–1/8 in. (2–3 mm).
8. Remove hairpin cotter and clevis pin from bellcrank.
Rotate clevis clockwise on rod to increase or
counterclockwise to decrease clearance (Fig. 48).
1
4
5
Figure 48
1. 1/16–1/8 in. (2–3mm)
2. Bellcrank
3. Transmission output shaft
9. Disengage the PTO. If the assist arm does not contact
the front stop on the mower deck (Fig. 49), readjust the
clevis to bring the bellcrank closer to the transmission
output shaft (Fig. 48).
5
Figure 49
1. 1/2 in. (13 mm) deflection
here
2. Assist arm
10. Check the belt guide under the engine frame for proper
adjustment (Fig. 46). The distance between the belt
guide and mower belt should be 1-1/4 in. (32 mm)
when mower belt is engaged. Adjust as necessary. The
disengaged belt should not drag or fall off pulley when
guides are properly adjusted.
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
Adjusting the Mower Belt
Tension
Service Interval/Specification
Check belt tension after the first 8 and 25 hours of
operation. Check the belt tension every 50 hours.
Important
Belt must be tight enough to not slip during
heavy loads while cutting grass. Over tensioning will
reduce belt and spindle bearing life.
1. Disengage the PTO, set the parking brake and turn the
engine off.
2. Loosen locknut on turnbuckle (Fig. 49).
3. Rotate turnbuckle toward rear of mower to increase
tension on belt. Rotate turnbuckle toward front of
mower to decrease tension on belt (Fig. 49).
Note: The eyebolt threads on both ends of the turnbuckle
should be engaged a minimum of 5/16 in. (8mm).
Adjusting the Blade Brake
1. Disengage the power take off (PTO) and set the parking
brake.
2. If necessary, adjust the spring mounting bolts so that the
blade brake pad rubs against the pulley edges (Fig. 50).
3. Adjust the nut at the end of the blade brake rod until
there is 1/8–3/16 in. (3mm–5mm) between the nut and
spacer (Fig. 50).
4. Engage the blades. Ensure the blade brake pad no
longer contacts the pulley edges.
2
1. Spring mounting bolts
2. Blade brake pad
33
3
1
Figure 50
3. 1/8–3/16 in. (3mm–5mm)
m–4727
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