SECTION 2
2-14
3-/ 4-Cylinder
PERIODIC INSPECTIONS
NOTE
It is recommended that a complete engine overhaul be performed
after 300 operating hours
Item Inspection Remarks
Fastener
Torque
Check the following:
• Cylinder head bolts
• Cylinder head cover bolts
• Exhaust cover bolts
• Carburetor mounting bolts or nuts
• Intake manifold bolts
• Crankcase bolts
• Oil pump mounting bolt
• Flywheel nut
• Starter motor installation bolts
• Driveshaft housing bolts
• Gearcase bolts
• Propeller shaft housing bolts
• Propeller nut
• Lower engine cover mounting bolts
• Engine mounting bolts
••
Torque to
specification.
Gearcase • Check oil level and add oil as required.
• Check for water or metallic matter in
gear oil.
••
See Lubrication Chart
in this section.
Spark Plugs • Check plug gap.
• Remove carbon deposits.
•
Replace plugs when
electrodes are worn.
Carburetors • Disassemble and clean.
• Check float valve for wear.
•
Replace worn parts as
required.
Fuel Tank,
Pick-up
Tube,
Filters,
and Fuel
Pump
• Disassemble, clean, and inspect.
• Check for leakage.
• Check for cracks.
••
Before Each Use
After First 10 Hours (2 weeks)
Every 30 Hours (1 month)
Every 50 Hours (3 month)
Every 100 Hours (6 month)
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