Shibaura ST329, Руководство оператора

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LUBRICATION AND MAINTENANCE
43
Fan Belt
：
： ：
：
A belt-driven fan at the front of the en-
gine draws air through the fins of the radiator to
cool the coolant in the radiator. A slipping fan belt
will lower the efficiency of the fan, resulting in the
engine running too hot. If the belt is too tight, it will
shorten the alternator bearing life. A correctly
tightened belt will deflect 5 to 10 mm when 5
kg thumb pressure is applied midway be-
tween the belt pulleys. Check the condition
and tension of the fan belt every 200 hours.
If the belt shows signs of cracking or fraying,
install a new belt.
To Adjust Belt Tension :
1. Loosen the alternator mounting bolts, Figure
63 .
Figure 63 - Alternator Mounting Bolts
WARNING
： ： ： ：
Never attempt to loosen or
tighten the bolts when the engine is
running.
2. Pry the alternator away from the engine and
tighten the mounting bolts.
3. Recheck belt deflection.
ENGINE SPEED ADJUSTMENT
The adjustments for idle and maximum no-load
speed settings should be adjusted according to the
following procedures :
Idle Speed
1. Pull the throttle lever rearward to the lowest
engine speed, this makes foot throttle free.
2. Adjust to the designated idling engine speed by
adjusting idling stop bolt and lock it.
Maximum Speed
1. Push the hand throttle lever forward to the
maximum engine speed.
2. To adjust maximum engine speed to 2950 -
3000 rpm, elongate outer cable gradually by
tightening the adjusting screw of throttle wire,
and lock the adjusting screw.
Figure 64 - Throttle Adjustment
3. To shorten outer cable release the adjusting
screw of throttle wire.
4. Use the same procedure for adjusting maximum
speed on the foot throttle pedal stroke.