Makita UC120D Instruction Manual page 6

Installing or removing saw chain
CAUTION:
• Always be sure that the tool is switched off and the
battery cartridge is removed before installing or
removing the saw chain.
• Always wear gloves when installing or removing the
saw chain.
• Use only saw chain and guide bar with bar tip
designed for this chain saw (see the Extract from
the spare parts list).
• In order to prevent kickback, do not remove the bar
tip or replace the guide bar with one without a bar
tip.
Loosen the screws with a screwdriver. Remove the
sprocket guard.
1
2
Loosen the hex socket head bolt with the hex wrench
provided. Remove the guide bar.
2
Fit the saw chain over the guide bar. Notice that the cut-
ters must be facing the revolving (arrow) direction.
Fit the saw chain over the sprocket. Install the guide bar
so that its concave portion will contact the saw chain ten-
sion adjusting spring.
001732
1. Screw
2. Sprocket guard
001733
1. Hex socket
head bolt
1
2. Hex wrench
3. Guide bar
3
001734
1. Guide bar
2
2. Cutter
1
2
1
Tighten the bolt to secure the guide bar. Install the
sprocket guard and tighten the screws to secure it.
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.
Grasp the saw chain in the middle of the guide bar and
lift up. The gap between the guide bar and the tie strap of
the saw chain should be approx. 2 - 3 mm (5/64" - 7/64").
If the gap is not approx. 2 - 3 mm (5/64" - 7/64"), slightly
loosen the hex socket head bolt which secures the guide
bar. The gap will be automatically adjusted to approx. 2 -
3 mm (5/64" - 7/64") by the saw chain tension adjusting
spring.
1
Then tighten the hex socket head bolt securely after mak-
ing sure that gap is approx. 2 - 3 mm (5/64" - 7/64").
6
001735
1. Sprocket
2. Saw chain ten-
sion adjusting
3
spring
3. Concave portion
of guide bar
001736
1. Hex socket
head bolt
2 - 3 mm
001737
1. Hex socket
1
head bolt
2. Hex wrench
2