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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, turn the ignition key to off, and
remove the key.
2. Wait for all moving parts to stop before leaving the
operating position and then chock or block tires.
3. Loosen locknut on turnbuckle (Fig. 51).
4. Rotate turnbuckle toward rear of mower to increase
tension on belt. Rotate turnbuckle toward front of
mower to decrease tension on belt (Fig. 51).
Note: The eyebolt threads on both ends of the turnbuckle
should be engaged a minimum of 5/16 inch (8mm).
3
4
5
Figure 51
1. Locknut
2. Turnbuckle
3. Rear idler pulley
5. If the belt is still loose after making adjustments to the
turnbuckle, reposition the rear idler pulley to the front
hole. The belt guide next to the pulley must also be
moved to the front hole (Fig. 51).
6. Readjust the turnbuckle.
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4. Front position for idler
pulley
5. Belt guide
36
Adjusting the Blade Brake
1. Disengage the PTO, turn the ignition key to off, and
remove the key.
2. Wait for all moving parts to stop before leaving the
operating position and then chock or block tires.
3. If necessary, adjust the spring mounting bolts so that the
blade brake pad rubs against the pulley edges (Fig. 52).
4. Adjust the nut at the end of the blade brake rod until
there is 1/8–3/16 inch (3mm–5mm) between the nut and
spacer (Fig. 52).
5. Engage the blades. Ensure the blade brake pad no
longer contacts the pulley edges.
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Figure 52
1. Spring mounting bolts
2. Blade brake pad
Adjusting the Grass/Mud
Scraper
1. Loosen the locknut holding scraper to the engine frame
(Fig. 53).
2. Rotate scraper until they align with center of pulley
grooves (Fig. 53).
3. Tighten the locknut (Fig. 53).
Note: The scraper must not contact the pulley on the sides
or bottom of grooves. Re-adjust if necessary.
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3. 1/8–3/16 inch
(3mm–5mm)
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