Makita UC3020A Instruction Manual page 13

1. Lock-off button
2. Switch trigger
2 3
1. Hand guard
2. Lock
3. Unlock
1. Sight glass
Checking the switch action
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CAUTION:
1
Always unplug the tool before testing the switch trigger. Locking the switch
2
trigger in the ON position is prohibited.
It must not be possible to depress the switch trigger unless the lock-off button
is first depressed.
The switch trigger must not jam in the depressed position. When released, the
switch trigger must return automatically to the OFF position, and the lock-off
button must return to its original position.
Checking the chain brake
NOTE:
• If the chain saw fails to start, the chain brake must be released. Pull the
hand guard backwards firmly until you feel it engage.
Hold the chain saw with both hands when switching it on. Hold the rear handle
with your right hand, the front handle with your left. The bar and the chain must
not be in contact with any object.
First press the lock-off button, then the switch trigger. The saw chain starts
immediately.
Press the hand guard forwards using the back of your hand. The saw chain
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must come to an immediate standstill.
CAUTION:
1
• Should the saw chain not stop immediately when this test is performed,
the saw may not be used under any circumstances. Consult a MAKITA
specialist repair shop.
Checking the run-down brake
Switch on the chain saw.
Release the switch trigger completely. The saw chain must come to a standstill
within one second.
CAUTION:
• Should the saw chain not come to a stop within one second when this
test is performed, the saw must not be used. Consult a MAKITA
specialist repair shop.
Checking the chain oiler
Before starting work, check the oil level in the tank, and the oil delivery.
The oil level can be seen in the sight glass shown in the figure.
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Check the oil delivery as follows:
Start the chain saw.
With the saw running, hold the saw chain approximately 15 cm above a tree
trunk or the ground. If lubrication is adequate, the oil spray will produce a light
oil trace. Observe the wind direction, and do not expose yourself to the oil
spray unnecessarily.
1
CAUTION:
• If an oil trace is not formed, do not use the saw. The lifespan of the chain
will otherwise be reduced. Check the oil level. Clean the oil feed groove
and the oil feed hole in the bar (refer to "MAINTENANCE ").
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