PERIODIC MAINTENANCE
6LPA Service Manual
4-13
Periodic Maintenance Procedures
12/05
© 2007 Yanmar Marine International
Perform the following maintenance after the initial
250 hours of operation.
• Checking the Fuel Injector Spray Pattern
• Inspecting and Adjusting Intake / Exhaust
Valve Clearance
Checking the Fuel Injector Spray Pattern
See Spray Test on page 6-15.
Inspecting and Adjusting Intake / Exhaust
Valve Clearance
Proper adjustment is necessary to maintain the
correct timing for opening and closing the valves.
Improper adjustment will cause the engine to run
noisily, resulting in poor engine performance and
engine damage. See Valve Clearance Inspection
and Adjustment on page 5-90.
Every 250 Hours of Operation Perform the following
maintenance every 250 hours or one year of
operation, whichever comes first.
• Replacing the Fuel Filter Element
• Changing the Coolant
• Checking or Replacing the Zinc Anodes
• Checking and Adjusting the Remote Control
Cable
• Cleaning the Turbocharger
• Cleaning the Air Cleaner
Replacing the Fuel Filter Element
See Replacing the Fuel Filter Element on
page 4-10.
Changing the Coolant
Replace the coolant every year.
Note: If Long Life coolant is used, replace
coolant every 2 years. WARNING! Wear
eye protection and rubber gloves
when you handle Long Life engine
coolant.
1. Drain the freshwater cooling system. See
Draining the Freshwater Cooling System on
page 3-26.
2. Fill the cooling system with clean coolant. See
Checking and Adding Engine Coolant on
page 3-25.
After Initial 250 Hours of Operation
Every 250 Hours of Operation