Yanmar 4JH5E - LONG-TERM STORAGE; PREPARE ENGINE FOR LONG-TERM STORAGE

PERIODIC MAINTENANCE
JH Series Operation Manual 87
12/05
Perform the following maintenance every
500 hours or 2 years of operation,
whichever comes first.
• Replacing the Exhaust / Water Mixing
Elbow
• Replacing Rubber Hoses
Replacing the Exhaust / Water
Mixing Elbow
Replace the mixing elbow with a new one
every 500 hours or 2 years, whichever
comes first, even if no damage is found.
Consult authorized Yanmar Marine dealer
or distributor.
Replacing Rubber Hoses
Replace rubber hoses every 2000 hours or
2 years, whichever comes first.
Consult authorized Yanmar Marine dealer
or distributor.
Perform the following maintenance every
1000 hours or 4 years of operation,
whichever comes first.
• Checking the Fuel Injection Timing
• Checking the Fuel Injector Spray
Pattern
• Replacing the Seawater Pump
Impeller
• Cleaning and Checking the Seawater
Passages
• Checking Diaphragm Assembly
(3JH5E / 4JH5E Only)
• Replacing the Alternator V-ribbed belt
• Adjusting Intake / Exhaust Valve
Clearance
• Checking the Remote Control Cable
Operation
• Adjusting the Propeller Shaft
Alignment
Checking the Fuel Injection Timing
Consult authorized Yanmar Marine dealer
or distributor.
Checking the Fuel Injector Spray
Pattern
Consult authorized Yanmar Marine dealer
or distributor.
Replacing the Seawater Pump
Impeller
The seawater impeller must be replaced
every 1000 hours even if it is not damaged.
See Checking or Replacing Seawater
Pump Impeller on page 82.
Every 500 Hours of Operation Every 1000 Hours of Operation
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