Every 1000 Hours Of Operation; Check The Unit Injector Spray Pattern; Adjust Unit Injectors; Replace Flexible Engine Mounts - Yanmar 6SY Series Operation Manual

Adjust the Propeller Shaft
Alignment
See Adjust Propeller Shaft Alignment on
page 86.
Check the Alternator Belt
Tension
See Check and Adjust the Alternator
Belt on page 86.
Every 1000 Hours of
Operation
Perform the following maintenance every
1000 hours of operation.

• Check the Unit Injector Spray Pattern

• Adjust Intake / Exhaust Valve Clearance

• Adjust Unit Injectors

• Clean and Check the Water Passages
• Replace Alternator Belt

• Replace Flexible Engine Mounts

Check the Unit Injector Spray
Pattern
See your authorized Yanmar marine dealer
or distributor.
Adjust Intake / Exhaust Valve
Clearance
See Adjust the Intake / Exhaust Valve
Clearance on page 93.
Adjust Unit Injectors
See your authorized Yanmar marine dealer
or distributor.
Replace Flexible Engine
Mounts
See your authorized Yanmar marine dealer
or distributor.
6SY Operation Manual
PERIODIC MAINTENANCE
Every 2000 Hours of
Operation
Perform the following maintenance every
2000 hours of operation.

• Overhaul and Check Fuel Feed Pump

• Clean Engine Oil Cooler

• Clean Seawater and Engine Coolant
System
• Replace Rubber Fuel Hoses
Overhaul and Check Fuel Feed
Pump
See your authorized Yanmar marine dealer
or distributor.
Clean Engine Oil Cooler
See your authorized Yanmar marine dealer
or distributor.
Clean Seawater and Engine
Coolant System
See Clean the Coolant System on
page 99.
Replace Rubber Fuel Hoses
See your authorized Yanmar marine dealer
or distributor.
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