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3. If the measured air gap is not within the specified
range, adjust the gap as follows:
A. Move the clutch lever to the Off position; refer to
Controlling the Paddles (page 22).
B. Loosen the nuts and bolts that secure the engine
to the engine deck (Figure 70).
4 3
G020006
Figure 70
1. Idler pulley
2. Setscrew
C. Move the engine position as follows:
•
Increase the air gap—move the engine
away from the idler pulley (Figure 70).
•
Decrease the air gap—move the engine
toward the idler pulley (Figure 70).
D. Align a straightedge across the engine pulley and
the idler pulley (Figure 71).
1
2
3
3
4
3. Nut and bolt
4. Engine deck
1
3
4
G020009
1. Engine pulley
2. Idler pulley
3. Reduction case (engine)
4. Belt guide
E. If needed, pivot the engine on the engine deck
until the engine pulley and the idler pulley are
aligned to the straightedge (Figure 71).
F. Tighten the nuts and bolts that secure the engine
to the engine deck to a torque of 18 N-m (13
ft-lb).
G. Check the air gap between the engine deck and
the roller on the clutch. If the air gap is not within
the specified range, repeat step 3 until the air gap
measurement is within the specified range.
H. Install the divider plate; refer to Installing the
Divider Plate (page 28).
Replacing the
Belts—Belt-drive Models
Service Interval: Every 2 years—Replace the belts.
Models 68013, 68014, 68016, 68017, 68020, and 68021 only
Removing the Belts
1. Move the clutch lever to the Off position; refer to
Controlling the Paddles (page 22).
2. Remove the divider plate; refer to Removing the
Divider Plate (page 28).
3. Remove the bolt that secures the belt guide to the
engine, and remove the belt guide (Figure 72).
40
2
5
6
7
Figure 71
5. Idler shaft
6. Jam nut
7. Setscrew
8. Straightedge
8
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