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9. Loop the digging chain over the auger drive shaft and
onto the drive sprocket, ensuring that the digging
teeth point forward on the upper span.
10. Set the upper span of the chain into place on the
trencher boom, then wrap the chain around the
roller at the end of the boom.
11. Thread the adjustment bolt into the boom and turn
it in until there is 1-1/2 to 2-1/2 inches (3.8 to 6.3
cm) of slack in the chain on the bottom span.
12. Thread the jam nut down the adjusting bolt and
tighten it securely against the boom.
13. Torque the 2 bolts and nuts securing the boom to
135 to 165 ft-lb (183 to 223 N-m).
14. Install the spoils auger using the bolt, 2 saddle
washer, and nut you removed previously.
15. Torque the bolt and nut to 75 ft-lb (101 N-m).
2
Checking Fluid Levels
No Parts Required
Procedure
Before starting the engine for the first time, check the
engine oil and hydraulic fluid levels; refer to Operation
for more information.
3
Charging the Battery (Electric
Start Models Only)
No Parts Required
Procedure
Charge the battery; refer to Servicing the Battery in
Maintenance for more information.
Product Overview
1. Control
4. Chain
panel
guard
2. Engine
5. Chain
3. Spoils
6. Digging
teeth
auger
Controls
Become familiar with all the controls (Figure 5) before
you start the engine and operate the machine.
6
7
3
5
1. Traction control
2. Boom elevation lever
3. Trencher control lever
4. Reference bar
Key Switch, Model 22970
The key switch has 2 positions: off and run.
To start the engine, rotate the key to the run position,
then pull the recoil handle on the engine.
To stop the engine, rotate the key to the off position.
13
Figure 4
7. Boom
10. Reverse
safety
plate
8. Trencher
head
9. Track
1
8
2
4
G007801
Figure 5
5. Throttle lever
6. Choke lever
7. Key switch
8. Hour meter (optional
accessory on model
22970)
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