Operation - Makita UC3550AP Instruction Manual

8. Align the tension slide with the hole of the guide
bar.
► Fig.6: 1. Guide bar 2. Hole
9. Holding the guide bar, and turn the chain adjusting
screw / dial to adjust the saw chain tension.
10. Place the sprocket cover so that the hooks fit
alongside the holes and the pin fits its counterpart
on the sprocket cover.
► Fig.7: 1. Hook 2. Hole 3. Pin
11. Tighten the sprocket cover.
► Fig.8
► Fig.9: 1. Lever 2. Sprocket cover
Adjusting saw chain tension
The saw chain may become loose after many hours
of use. From time to time check the saw chain tension
before use.
1. Loosen the sprocket cover lightly.
2. Lift up the guide bar tip slightly.
3. Turn the adjusting screw / dial to adjust saw chain
tension.
► Fig.10: 1. Loosen 2. Tighten 3. Chain adjusting
screw 4. Guide bar 5. Saw chain
► Fig.11: 1. Loosen 2. Tighten 3. Adjusting dial
4. Guide bar 5. Saw chain
4. Tighten the saw chain until the lower side of the
saw chain fits in the guide bar rail (see circle).
5. Keep holding the guide bar lightly, tighten the
sprocket cover after adjusting the chain tension.
Make sure that the saw chain does not loose at
lower side.
Make sure the saw chain fits snugly against the lower
side of the bar.
CAUTION:
• Do not tighten the saw chain too much.
Excessively high tension of saw chain may
cause breakage of saw chain, wear of the guide
bar and breakage of the adjusting dial.
• A chain which is too loose can jump off the bar,
and therefore presents an accident risk.
• Carry out the procedure of installing or removing
saw chain in a clean place free from sawdust
and the like.
Engaging extension cord
CAUTION:
• Make sure that the extension cord is unplugged
to the mains outlet.
► Fig.12: 1. Cord hook 2. Tool's cord 3. Extension
cord 4. Plug and socket (the shape may
differ from country to country)
When engaging the extension cord, secure it to the
chain saw's cord with the cord hook.
Attach the cord hook about 100 - 200 mm from the
extension cord connector. This helps prevent uninten-
tional disconnection.

OPERATION

CAUTION:
• Hold the tool firmly with right hand on the rear
handle and left hand on the front handle when
performing the tool.
Switch action
► Fig.13: 1. Lock-off button 2. Switch trigger
CAUTION:
• Always be sure that the tool is switched off and
unplugged before checking function on the
switch trigger.
• Before plugging in the tool, always check to see
that the switch trigger actuates properly and
returns to the "OFF" position when released.
To prevent the switch trigger from being accidentally
pulled, a lock-off button is provided.
To start the tool, depress the lock-off button and pull the
switch trigger. Release the switch trigger to stop.
Lubrication
CAUTION:
• Always be sure that the tool is switched off and
unplugged before lubricating the saw chain.
► Fig.14
Lubricate the saw chain and bar using biologically
degradable saw chain oil with an adhesion agent.
The adhesion agent in the saw chain oil prevents the
oil from being thrown off the saw excessively quickly.
Mineral oils must not be used, as they are harmful to the
environment.
CAUTION:
• Prevent the oil from coming into contact with the
skin and eyes. Contact with the eyes causes
irritation. In the event of eye contact, flush the
affected eye immediately with clear water, then
consult a doctor at once.
• Never use waste oil. Waste oil contains carcino-
genic substances. The contaminants in waste
oil cause accelerated wear of the oil pump, the
bar and the chain. Waste oil is harmful to the
environment.
• When filling the chain saw with chain oil for the
first time, or refilling the tank after it has been
completely emptied, add oil up to the bottom
edge of the filler neck. The oil delivery may
otherwise be impaired.
► Fig.15: 1. Oil filler cap 2. Strap
To fill the oil, perform the following steps:
1. Clean the area around the oil filler cap thoroughly
to prevent any dirt from entering the oil tank.
2. Unscrew the oil filler cap and add oil up to the
lower edge of the filler neck.
3. Screw the oil filler cap firmly back in place.
4. Wipe away any spilt chain oil carefully.
14 ENGLISH