5.2.4
Inspection
Every 500 Hrs.or 2 yrs.
(1) Checking the Tension of the
V-Belt
of the
Alternator
When
there is not enough tension in the V-belt,
the belt will slip making it impossible for the
alternator to generate power.
Additionally, the fresh water pump will not work
causing
the engine to overheat.
Check
the tension of the V-belt in the following
manner.
©Press the V-belt down
with
your thumb at
the middle of the belt to check the tension.
The
give in the V-belt should measure about
8~ 10mm at the
depression.
©To adjust the V-belt tension, loosen the set
bolt
and
move
the
alternator.
©Replace the
belt
if it is damaged.
Parts
No:
121850-42280
[NOTICE]
• If the V-belt tension is too
tight,
the
belt and the bearings of the alternator
will be damaged.
• Be careful not to spill any oil on the
V-belt as this will lead to stretching
and
slippage.
Set
bolt
Fresh
cooling
<
water pump
Crank
pulley
(2) Checking the Tension of the
V-Belt
of the
Power
Steering
Pump
When
there is not enough tension in the V-belt,
the oil pump will not
turn
making steering
impossible
and operation dangerous.
Check
the tension of the V-belt in the following
manner.
©Press the V-belt down
with
your thumb at
the middle of the belt to check the tension.
The
give in the V-be|t should measure about
8-10mm at the depression.
©To adjust the V-belt tension, loosen the set
bolt
and
move
the oil pump.
©Replace the
belt
if it is damaged.
Parts
No:
119175-25500
Alterator
For 4LHA-HTZP/-DTZP/-STZP
Set
bolt
Power
steering
oil pump
8—10mm
Tension:
o—iGmm
5.2.5
Inspection
Every 1000 Hrs. or 4 yrs.
(1)
Adjustment
of
Intake/Exhaust
Valve
clearance
(2nd
time
&
after)
This
maintenance requires specialized knowledge. Consult your Yanmar dealer or distributor.
Adjustment is necessary to maintain the correct timing for the opening and closing of valves.
Neglecting
adjustment will cause the engine to run noisily and result in reduced power output
and
other damage.
(2)
Inspecting
and
Adjusting
Fuel
Injection
Valves (2nd
time
&
after)
This
maintenance requires
specialized
knowledge. Consult your Yanmar dealer or distributor.
Fuel
injection must be adjusted to ensure optimal engine performance.
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