Makita DUC252 Bedienungsanleitung Seite 13

Checking the chain brake
NOTE:
• If the chain saw fails to start, the chain brake
must be released. Pull the front hand guard
backwards firmly until you feel it engage.
Hold the chain saw with both hands when switching it on. Hold
the top 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.
► Fig.7: 1. Front hand guard 2. Lock 3. Unlock
Press the front hand guard forwards using the back of your
hand. The saw chain must come to an immediate standstill.
CAUTION:
• 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.
Adjusting the chain lubrication
► Fig.8: 1. Adjusting screw
You can adjust the oil pump feed rate with the adjusting screw.
The amount of oil can be adjusted using the universal wrench.
Carabiner (rope attachment point)
► Fig.9
Carabiner (Rope attachment point) is for use of tool hang-
ing. Before using carabiner, pull it out and tie it with a rope.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
the battery cartridge is removed before carrying
out any work on the tool.
Removing or installing saw chain
CAUTION:
• Always wear gloves when installing or removing
the saw chain.
• The saw chain and the guide bar are still hot just
after the operation. Let them cool down enough
before carrying out any work on the tool.
To remove the saw chain, perform the following steps:
1. Press and fully open the lever until it stops.
► Fig.10: 1. Sprocket cover 2. Lever
2. Turn the adjusting dial to "-" direction to release
the saw chain tension.
► Fig.11: 1. Adjusting dial
3. Turn the lever counterclockwise to loosen the
sprocket cover until it comes off.
4. Remove the sprocket cover.
5. Remove the saw chain and guide bar from the
chain saw.
To install the saw chain, perform the following steps:
6. Make sure the direction of the chain. The arrow
mark on the chain shows the direction of the
chain.
► Fig.12: 1. Sprocket
7. Fit in one end of the saw chain on the top of
the guide bar and the other end of it around the
sprocket.
8. Rest the guide bar in place on the chain saw.
9. Turn the adjusting dial to "-" direction to slide the
adjusting pin in the direction of arrow.
► Fig.13: 1. Adjusting pin
10. Place the sprocket cover on the chain saw so that
the adjusting pin is positioned in a small hole in
the guide bar.
► Fig.14: 1. Hole 2. Guide bar
11. Turn the lever clockwise fully and a quarter
turn back to keep looseness for adjusting chain
tension.
12. Turn the adjusting dial, and adjust the chain
tension.
13. Turn the lever clockwise to secure the sprocket
cover.
► Fig.15: 1. Sprocket cover 2. Lever
14. Press and return the lever to its original position.
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. Press and fully open the lever until it clicks. Turn it
counterclockwise a little to loosen sprocket cover
lightly.
► Fig.16: 1. Sprocket cover 2. Lever
2. Lift up the guide bar tip slightly.
► Fig.17: 1. Loosen 2. Tighten 3. Adjusting dial
4. Guide bar 5. Saw chain
3. Turn the adjusting dial to adjust the saw chain
tension. Tighten the saw chain until the lower side
of the saw chain fits in the guide bar rail (see circle
in the figure).
4. Keep holding the guide bar lightly and tighten the
sprocket cover after adjusting the chain tension.
Make sure that the saw chain does not loose at
lower side.
5. Press and return the lever to its original position.
► Fig.18: 1. Sprocket cover 2. Lever
Make sure the saw chain fits snugly against the lower
side of the bar.
13 ENGLISH