Every 1000 Hours of Operation
Perform the following maintenance every
1000 hours or 4 years of operation,
whichever comes first.
• Checking the Fuel Injection Timing
• Checking the Fuel Injector Pressure
and Nozzle Spray Pattern
• Replacing the Seawater Pump
Impeller
• Adjusting Intake / Exhaust Valve
Clearance
• Lapping the Intake and Exhaust
Valves
Checking the Fuel Injection Timing
See your authorized Yanmar Marine dealer
or distributor.
Checking the Fuel Injector Pressure
and Nozzle Spray Pattern
See your authorized Yanmar Marine dealer
or distributor.
Checking or Replacing Seawater
Pump Impeller
NOTICE: When turning the engine by
hand, be sure to turn it in the correct
direction. Turning it in the opposite
direction damages the blades of the
impeller.
(4)
(3)
(1)
(2)
0004914
Figure 17
1 – Impeller
2 – O-Ring
3 – Cover
4 – Cover Bolts
1. Close the seacock.
2. Drain the seawater cooling system. See
Draining Seawater Cooling System on
3. Loosen the cover bolts and remove the
cover and O-ring.
4. Inspect the inside of the seawater pump
with a flashlight. If any of the following
are found, disassembly and
maintenance are required:
• Impeller blades are cracked or
nicked. Edges or surfaces of the
blades are marred or scratched.
• Wear plate is damaged.
5. If no damage is found when inspecting
the inside of the pump, install the O-ring
and cover.
6. If a large amount of water leaks
continuously from the water drain line
below the seawater pump during
operation, replace the mechanical seal.
See your authorized Yanmar Marine
dealer or distributor.
7. NOTICE: Replace the seawater
pump impeller every 1000 hours
even if no damage is apparent.
When replacement is required, see
your authorized Yanmar Marine dealer
or distributor.
Adjusting Intake / Exhaust Valve
Clearance
See your authorized Yanmar Marine dealer
or distributor.
Lapping the Intake and Exhaust
Valve
See your authorized Yanmar Marine dealer
or distributor.
PERIODIC MAINTENANCE
68
6LPA Series Operation Manual
© 2007 Yanmar Marine International
Содержание 6LPA-STP2
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