Every 500 Hours Of Operation - Yanmar BY Series Service Manual

Periodic Maintenance Procedures
12/05
Replacing the Air Filter Element
1. Turn engine off.
2. Remove engine cover.
3. Remove clamp (Figure 4-10, (1)).
Figure 4-10
(2)
Figure 4-10
4. Remove air filter (Figure 4-10, (2)).
5. Replace air filter.
Checking / Changing the Alternator Belt
See Checking / Replacing the Seawater Pump and
Alternator Belts on page 4-13.
Checking Shift Cable Adjustment
See Checking the Shift Cable Adjustment on
page 4-10.
Adjusting the Propeller Shaft Alignment
See Adjusting the Propeller Shaft Alignment (If
Equipped with Marine Gear) on page 4-10. Refer to
the appropriate Marine Gear Service Manual for
additional information.
Checking the Hydraulic Oil Cooler
See Inspect and Clean Hydraulic Oil Cooler on
page 7-12.
Checking or Replacing Rubber Hoses
Check rubber water and fuel hoses for wear or
damage.
Checking the Flexible Engine Mounts
Check the flexible engine mounts for wear or
damage.
BY Service Manual
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0006570
© 2009 Yanmar Marine International
PERIODIC MAINTENANCE

Every 500 Hours of Operation

Perform the following maintenance every 500 hours
of operation or 2 years, whichever comes first.
• Checking the Fuel Pump and Fuel Lines
• Draining and Refilling Closed Cooling System
(Engine Coolant)
Checking the Fuel Pump and Fuel Lines
See Fuel System on page 6-1.
Also see Engine Piping Diagrams on page 3-8.
Draining and Refilling Closed Cooling
System (Engine Coolant)
1. Disconnect battery negative (-) cable.
2. Remove the engine cover.
3. Remove the coolant pressure cap from heat
exchanger.
4. Remove the heat exchanger to access the
cylinder block drain plug behind it.
5. WARNING! Burn Hazard. NEVER remove the
coolant filler cap if the engine is hot. Steam
and hot engine coolant will escape and
seriously burn you. Allow the engine to cool
down before attempting to remove the filler
cap. Remove drain plug (Figure 4-11, (1)) from
the engine block. Allow coolant to drain into a
container of appropriate size.
Figure 4-11
Figure 4-11
( 1 )
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4-15