PERIODIC MAINTENANCE
4-16
6LPA Service Manual
Periodic Maintenance Procedures
© 2007 Yanmar Marine International
Perform the following maintenance every 500 hours
or 2 years of operation, whichever comes first.
• Cleaning or Replacing Exhaust / Water Mixing
Elbow
• Replacing Fuel Line and Rubber Hoses
• Checking and Adjusting the Alternator V-Belt
• Checking and Adjusting the Power Steering
Oil Pump Belt (6LPA-STZP2 Models)
Cleaning or Replacing Exhaust / Water
Mixing Elbow
Clean or replace the exhaust / water mixing elbow
every 500 hours or 2 years, whichever comes first.
Replacing Fuel Line and Rubber Hoses
Replace fuel line and rubber hoses every 500 hours
or 2 years, whichever comes first.
NOTICE: Replace rubberized fuel hoses every two
years or every 500 hours of engine operation,
whichever comes first, even if the engine has been
out of service. Rubberized fuel lines tend to dry out
and become brittle after two years or 500 hours of
engine operation, whichever comes first.
Checking and Adjusting the Alternator
V-Belt Tension
Figure 4-14
Figure 4-14
NOTICE: NEVER allow oil on the belt(s). Oil on the
belt causes slipping and stretching. Replace the
belt if it is damaged. NEVER over-tighten the belt(s)
or engine damage will result.
1. Check the belt by pushing on the middle of the
belt (Figure 4-14, (1)) with your finger. With
proper tension, the belt should deflect
8 to 10 mm (approximately 3/8 in.).
2. Loosen the alternator bolt (Figure 4-14, (2))
and move the alternator to adjust the V-belt
tension.
3. Replace the V-belt if required.
Every 500 Hours of Operation
Alternator V-Belt
Part Number
119775–77260
(1)
(2)
000490
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