Lawn-Boy 10550 - Maintenance; Recommended Maintenance Schedule

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Maintenance
Note: Determine the left and right sides of the machine from the normal operating position.
Recommended Maintenance Schedule
Maintenance Service
Interval
Maintenance Procedure
Each Use
• Check the stopping time of the blade brake. The blade must stop within three
seconds of releasing the bail; if it does not, contact an Authorized Service Dealer
for repair.
• Remove grass clippings and dirt from the under the housing.
25 Hours
• Check the blade and the engine mounting fasteners. Tighten them if they are
loose.
• Charge the battery for 24 hours monthly or as required. Charge for 24 hours
when storing the lawn mower and before the first mowing of the season (electric
start model only).
• Remove the grass clippings and debris from under the belt cover and near the
drive belt (self-propel models only).
• Grease the rear-height adjustor brackets (self-propel models only).
50 Hours
• Adjust the self-propel drive after changing the handle height, installing a new
self-propel drive cable, or if the traction drive belt slips.
• Remove and clean the air filter. Clean it more frequently in dusty operating
conditions.
• Clean, inspect, and gap the spark plug. Replace it if necessary.
• Sharpen or replace the blade; maintain it more frequently if the edge dulls
quickly in rough or in sandy conditions.
• Check for leaks in the fuel system and/or a deteriorating fuel hose. Replace
parts if necessary.
100 Hours
• Clean the exhaust port.
• Clean off grass clippings, debris, or dirt that can clog the engine air cooling fins
and starter. Clean the cooling system more frequently in dirty operating
conditions.
1
Change the engine oil after the first two operating hours.
Important Refer to your engine operator’s manual for additional maintenance procedures.
Caution
If you leave the wire on the spark plug, someone could accidently start the engine and seriously
injure you or other bystanders.
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.