Every 500 Hours Of Operation - Yanmar 4JH45 Operation Manual

12/05
Wash the Turbocharger blower (If
Equipped)
Contamination of the turbocharger causes
revolutions to drop and engine output to
fall.
If a significant drop in engine output is
noted (10% or more), wash the
turbocharger blower.
This should be done only by a trained and
qualified technician. Consult authorized
Yanmar Marine dealer or distributor.
Adjusting the Alternator V-ribbed
belt Tension
See Checking and Adjusting the Alternator
V-ribbed belt Tension on page 65.
Checking the Wiring Connectors
Consult authorized Yanmar Marine dealer
or distributor.
Tightening All Major Nuts and Bolts
See Tightening Fasteners on page 58 or
consult authorized Yanmar Marine dealer
or distributor.
JH Series Operation Manual
PERIODIC MAINTENANCE

Every 500 Hours of Operation

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.
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