Specifications

PERIODIC MAINTENANCE
GM Series Operation Manual 57
12/05
4. Verify that the governor control lever on
the engine is in contact with the low
speed stop bolt.
If adjustment is needed, loosen the bracket
that holds the control cable and adjust its
position as necessary. Adjust the high
speed position first and then the low speed
position.
NOTICE
The high speed stop bolt on the engine
governor is set at the factory. Do not
adjust. Adjustments to this bolt will void the
engine warranty.
Adjusting the Marine Gear Control
Cable
1. Check that the control lever moves to
the correct position when the remote
control cable handle is moved to the
NEUTRAL, FORWARD and REVERSE
positions.
2. Use the NEUTRAL position as the
standard for adjustment. When there is
deviation, loosen the bracket for the
shift control cable on the marine gear
and adjust its position as necessary.
Adjusting the Propeller Shaft
Alignment
The flexible engine mounts are
compressed slightly during initial engine
operation and may cause misalignment
between the engine and the propeller
shaft.
After the first 50 hours of operation, the
alignment should be checked and
readjusted if necessary. This is considered
normal maintenance and the adjustment
requires specialized knowledge and
techniques. Consult your authorized
Yanmar Marine dealer or distributor.
After you complete the initial 50-hour
maintenance procedures, perform the
following procedures every 50 hours of
operation.
• Draining the Fuel Filter / Water
Separator
Draining the Fuel Filter / Water
Separator
WARNING
When you remove any fuel system
component to perform maintenance
(such as changing the fuel filter), put an
approved container under the opening
to catch the fuel. Never use a shop rag
to catch the fuel. Vapors from the rag
are flammable and explosive. Wipe up
any spills immediately. Wear eye
protection. The fuel system is under
pressure and fuel could spray out when
you remove any fuel system
component.
See Draining the Fuel Filter / Water
Separator on page 54.
Every 50 Hours of Operation
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