Maintenance
Note:
Determine the left and right sides of the machine from the normal operating position.
Recommended Maintenance Schedule(s)
Maintenance Service
Interval
Maintenance Procedure
After the rst 5 operating
hours
• Change the engine oil.
Before each use or daily
• Test the safety interlock system.
• Check the engine oil level.
• Check the cutting blades.
• Wipe clean the collection sensors.
• Clean the mower housing.
Every 25 hours
• Grease all lubrication points.
• Clean the foam air lter element (more often in dirty or dusty conditions).
• Change the engine oil (when operating under heavy load or in high
ambient temperatures).
• Check tire pressure.
• Check the belts for wear/cracks.
Every 50 hours
• Change the engine oil.
• Check the battery electrolyte level.
Every 100 hours
• Replace the paper air lter element (more often in dirty or dusty
conditions).
• Change the oil lter (model 74433 only).
• Replace spark plug.
• Replace fuel lter.
Before storage
• Drain the fuel tank.
• Charge the battery and disconnect battery cables.
• Perform all maintenance procedures listed above before storage.
• Paint any chipped surfaces.
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.
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Summary of Contents for TimeCutter ZD420
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