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INSTALLATION & OPERATION MANUAL
L500 Series
- 22 -
CAUTION
DO NOT RUN THE ENGINE WITHOUT SEAWATER. THE SEAWATER
PUMP IMPELLER WILL BE DAMAGED. BEFORE STARTING THE
ENGINE, BE SURE TO SUPPLY SEAWATER TO THE PASSAGES.
CAUTION
IMPELLER DAMAGE MAY OCCUR IF APPROPRIATE TOOLS ARE NOT
USED WHEN REMOVING THE IMPELLER. MAKE SURE TO CHECK O-
RING CONDITION AFTER SEAWATER PUMP REASSEMBLY.
CAUTION
DO NOT INSTALL ADDITIONAL DEVICES WHICH COULD OBSTRUCT
THE FLOW OF SEAWATER. THIS CAN CAUSE THE ENGINE TO
OVERHEAT.
• Stop the engine and close the water valve.
• Remove the impeller housing cover.
• Remove the impeller from inside the seawater
pump.
• Check the condition of impeller and bushing.
• Apply soapy water to impeller when assembling,
and reassemble towards rotation direction.
• Replace the O-ring on the impeller housing
cover.
• Open the water valve.
• Start the engine and check if there is water
leakage.
CHECKING SEAWATER PUMP & IMPELLER