
Every 1000 Hours of Operation
Perform the following maintenance every
1000 hours or every 4 years of operation,
whichever comes first.
• Inspecting the Fuel Injection Timing
• Inspecting the Seawater Pump
Impeller
• Checking and Adjusting the
Alternator V-Belt Tension
• Tightening All Major Nuts and Bolts
• Adjusting the Propeller Shaft
Alignment
Inspecting the Fuel Injection Timing
See your authorized Yanmar Marine dealer
or distributor.
Inspecting the Seawater Pump
Impeller
See Inspecting the Seawater Pump
Impeller on page 55.
Checking and Adjusting the
Alternator V-Belt Tension
See Checking and Adjusting the Alternator
V-Belt Tension on page 51.
Tightening All Major Nuts and Bolts
See Tightening Fasteners on page 44 or see
your authorized Yanmar Marine dealer or
distributor.
Adjusting the Propeller Shaft
Alignment
See Adjusting the Propeller Shaft
Alignment on page 52. See your authorized
Yanmar Marine dealer or distributor.
PERIODIC MAINTENANCE
58 GM Series Operation Manual
© 2007 Yanmar Marine International
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