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B. Slowly add the specified oil into the fill port until
the oil level is between 1/3 and 1/2 of the sight
glass (Figure 68).
C. Clean the fill plug.
D. Apply PTFE thread-sealing tape to the threads
of the plug.
E. Install the plug into the fill port in the housing
(Figure 68).
Replacing the Gear-case Oil
Service Interval: Every 800 hours—Replace the gear-case
oil (Model 68024 only).
1. Align a drain pan with a 3-quart capacity under the
drain plug (Figure 68).
2. Remove the drain plug from the drain port, and
completely drain the gear-case oil (Figure 68).
3. Remove the fill plug (Figure 68).
4. Clean the drain and fill plugs, and apply PTFE
thread-sealing tape to the plug threads.
5. Install the drain plug in the drain port (Figure 68).
6. Slowly add the specified oil into the fill port until the
oil level is between 1/3 and 1/2 of the sight glass
(Figure 68).
7. Install the fill plug in the fill port (Figure 68).
Belt Maintenance
Servicing the Belts—Belt-drive
Models
Models 68013, 68014, 68016, 68017, 68020, and 68021 only
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 28).
2. Move the clutch lever to the Off position; refer to
Controlling the Paddles (page 22).
3. Examine the belts for wear or damage. If the belts are
worn or damaged, replace them; refer to Inspecting
the Belts (page 39).
4. Examine the pulleys for wear, damage, and
misalignment; refer to Aligning the Pulleys—Belt-drive
Models (page 42).
5. Install the divider plate; refer to Installing the Divider
Plate (page 28).
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 On position; refer to
Controlling the Paddles (page 22).
2. Measure the air gap between the engine deck and the
roller on the clutch (Figure 69).
G019976
1. Engine deck
2. Clutch roller
39
1
2
Figure 69
3. Clutch air gap: 2.5 to 6.5
mm (3/32 to 1/4 inch)
3
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