Maintenance
Note: Deter mine the left and right sides of the mac hine from the nor mal operating position.
Recommended Maintenance Schedule(s)
Maintenance
Service Interval
Maintenance Procedure
After the rst use
• Change the engine oil.
Before each use or
daily
• Test the safety interlock system.
• Check the engine oil level.
• Check the cutting blades.
• Clean the mower housing.
Every 25 hours
• Grease all lubrication points.
• Clean the foam air lter element (more often in dirty or dusty
conditions).
• 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 74403 only).
• Replace fuel lter.
• Replace spark plug.
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: R efer to y our engine operator’ s man ual f or additional maintenance pr ocedur es.
If y ou lea v e the k ey in the ignition s witch, someone could accidentl y star t the engine and seriousl y
injur e y ou or other bystander s.
R emo v e the k ey fr om the ignition and disconnect the wir e fr om the spar k plug bef or e y ou do an y
maintenance. Set the wir e aside so that it does not accidentall y contact the spar k plug .
Premaintenance
Procedures
Removing and Installing the
Engine Hood
1. T o remo v e the hood, loosen the knobs and then
pull the hood bac k and up ( Figure 17 ).
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