Toro 68021HD, Operator'S Manual

Page: 36 / 44

Belt Maintenance
Servicing the Belts—Belt-drive
Models
Inspecting the Belts
Service Interval: After the first 25 hours—Inspect the belts
and adjust as necessary.
Every 40 hours—Inspect the belts and adjust as
necessary.
1. Remove the divider plate; refer to Removing the
Divider Plate (page 27) .
2. Move the clutch lever to the O
FF
position.
3. Examine the belts for wear or damage. If the belts are
worn or damaged, replace them; refer to
Installing the
Belts (page 37) .
4. Examine the pulleys for wear, damage, and
misalignment; refer to
Aligning the Pulleys (page 39) .
5. Install the divider plate; refer to Installing the Divider
Plate (page 27) .
Adjusting the Belt Tension
Clutch air gap: 2.5 to 6.5 mm (3/32 to 1/4 inch)
1. Move the clutch lever to the O
N
position.
2. Measure the air gap between the engine deck and the
roller on the clutch (
Figure 55 ).
G019976
1
2
3
Figure 55
1. Engine deck 3. Clutch air gap: 2.5 to 6.5
mm (3/32 to 1/4 inch)
2. Clutch roller
3. If the measured air gap is not within the specified
range, adjust the gap as follows:
A. Move the clutch lever to the O
FF
position.
B. Loosen the nuts and bolts that secure the engine
to the engine deck (
Figure 56 ).
4 3
4 3
1
2
3
G020006
Figure 56
1. Idler pulley 3. Nut and bolt
2. Setscrew 4. Engine deck
C. Move the engine position as follows:
•
Increase the air gap —move the engine
away from the idler pulley ( Figure 56 ).
•
Decrease the air gap —move the engine
toward the idler pulley ( Figure 56 ).
D. Align a straightedge across the engine pulley and
the idler pulley (
Figure 57 ).
G020009
1 2
3
4
5 6 7 8
Figure 57
1. Engine pulley 5. Idler shaft
2. Idler pulley 6. Jam nut
3. Reduction case (engine) 7. Setscrew
4. Belt guide 8. Straightedge
36