Instruction Manual

SK850 Operator’s Manual Service - 87

As Needed

CMW

As Needed

Change Air Filter

Change air filter when red band on indicator (1) is

visible. Replace safety element (4) every third

change of primary filter (3) or any time primary

element has become damaged.

1. Open air filter housing at latches (2).

2. Remove primary element (3).

3. Wipe inside of housing and end cup (2).

4. Insert new primary element.

5. Latch air filter case.

6. Reset air filter service indicator (1).

Location Task Notes

Change air filter

Check water separator filter

Adjust idler roller bearings

Check battery

Charge battery

TR50 Check digging chain rollers, sidebars, pins, and

bushings

Check digging chain teeth and bits

Check trencher headshaft sprocket bolts

Replace digging chain

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