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5. MAINTENANCE & INSPECTION 53
(8) Clean air cleaner
Disassemble the air cleaner (intake silencer) and
clean it with a neutral detergent.
Reassemble after it is completely dry.
(9) Checking Wiring Connectors
Check whether each electric connection part doesn't
have looseness. If the disconnection part will be
found, repair or consult with Yanmar distributor or
dealer.
(10) Retightening All Major Nuts and
Bolts
When operating for long periods of time, The major
bolts and nuts may come loose. It is dangerous to
operate the engine in such condition. Retightening is
necessary.
This maintenance requires specialized knowledge.
Consult your Yanmar dealer or distributor.
5.3.4 Inspection Every 500 Hrs.
(1) Cleaning Exhaust/Water Mixing Elbow.
Replace the used mixing elbow with new one every
500 hours or 2 years, whichever comes first, even if
any damage is not found.