Manual Makita DUC252Z (page 15 of 33) (English, German, Dutch, Danish, French, Italian, Portuguese, Turkish, Spanish)

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Overheat protection for battery / tool

When the battery/tool is overheated, the tool stops

automatically without any indication. The tool does not

start even if pulling the switch trigger. In this situation, let

the battery/tool cool before turning the tool on again.

NOTE:

• The battery overheat protection works only with a

battery cartridge with a star marking. (Fig. 2)

Overdischarge protection (Fig. 3)

When the remaining battery capacity gets low, the

battery indicator blinks on the applicable battery side. By

further use, the tool stops and the battery indicator lights

up about 10 seconds. In this situation, charge the battery

cartridge.

Switch action (Fig. 4)

CAUTION:

• Before installing the battery cartridge into 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.

Checking the chain brake (Fig. 5)

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.

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. 6)

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. 7)

Carabiner (Rope attachment point) is for use of tool

hanging. 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 (Fig. 8, 9, 10,

11, 12 & 13)

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.

2. Turn the adjusting dial to “–” direction to release the

saw chain tension.

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.

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.

10. Place the sprocket cover on the chain saw so that

the adjusting pin is positioned in a small hole in the

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.

14. Press and return the lever to its original position.

Adjusting saw chain tension (Fig. 8 & 14)

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.

2. Lift up the guide bar tip slightly.

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.

Make sure the saw chain fits snugly against the lower

side of the bar.

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Makita DUC252Z Manual

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