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Maintenance
Note: Determine the left and right sides of the machine from the normal operating position.
Recommended Maintenance Schedule(s)
Maintenance Service
Interval
After the first 8 hours
After the first 50 hours
Before each use or daily
Every 25 hours
Every 40 hours
Every 50 hours
Every 100 hours
Every 200 hours
Every 250 hours
Every 400 hours
Every 1,500 hours
Yearly or before storage
Important: Refer to your Engine Operator's Manual for additional maintenance procedures.
If you leave the key in the ignition switch, someone could accidently start the engine and seriously
injure you or other bystanders.
Remove the key from the ignition and disconnect the wire from the spark plug before you do any
maintenance. Set the wire aside so that it does not accidentally contact the spark plug.
Maintenance Procedure
• Change the engine oil.
• Check and adjust the track tension.
• Check the engine oil level.
• Grease the machine. (Grease immediately after every washing.)
• Check the engine oil level.
• Check the condition of and clean the tracks.
• Check the condition of the digging teeth and replace any that are worn or damaged.
• Remove debris from the machine.
• Check for loose fasteners.
• Check the hydraulic fluid level.
• Clean the foam air cleaner element. (Models 22970 and 22971)
• Check the battery electrolyte level.
• Check the digging chain for excessive wear and proper tension.
• Grease the trencher housing.
• Check the paper air cleaner element. (Models 22970 and 22971)
• Change the engine oil.
• Check the spark plugs.
• Check and adjust the track tension.
• Check the hydraulic lines for leaks, loose fittings, kinked lines, loose mounting
supports, wear, weather, and chemical deterioration and repair if necessary.
• Replace the paper air cleaner element. (Models 22970 and 22971)
• Change the oil filter.
• Replace the fuel filter.
• Replace the hydraulic filter.
• Replace the primary air filter and check the condtion of the safety filter (Model 22974)
• Check and grease the road wheels.
• Change the hydraulic fluid.
• Replace all moving hydraulic hoses.
• Check and adjust the track tension.
• Check and adjust the chain tension.
• Touch up chipped paint
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