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Checking the chain brake
Do not work with the chain saw without first checking the chain brake!
Start the engine as described (make sure you have a good footing, and place the chain saw on the
ground in such a way that the guide bar is free of contact).
Grasp the tubular handle firmly with one hand and hold the grip with the other.
With the engine running at moderate speed, press the hand guard (6) in the direction of the arrow
with the back of your hand until the chain brake engages. The chain should stop immediately.
Immediately release the throttle and release the chain brake.
IMPORTANT: If the chain does not stop immediately in this test, do not under any circum-
stances proceed with work. Contact a MAKITA service center.
Adjusting the carburetor
The carburetor eliminates the need to adjust the idle and main nozzles, and no such adjustment is
possible.
If necessary, the idle speed can be adjusted using the adjustment screw (11).
As installed, the carburetor has fixed nozzles for the air pressure at sea level. At heights above
1000 m /3300 feet it may be necessary to replace the carburetor nozzles.
Adjust the carburetor using the screwdriver (7, which has a blade width of 4 mm.)
Before undertaking the adjustment, run the engine for 3 – 5 minutes to warm it up, but not at high
speed!
Set idle speed
Turning the adjusting screw (11) in (clockwise): increases the idle speed.
Turning it out (counterclockwise): lowers the idle speed.
Caution: In no case should the chain move.
MAINTENANCE
Sharpening the saw chain
CAUTION: Before doing any work on the guide bar or chain, always switch off the engine
and pull the plug cap off the spark plug (see “Replacing the spark plug”). Always wear protec-
tive gloves!
The chain needs sharpening when:
The sawdust produced when sawing damp wood looks like wood flour.
The chain penetrates the wood only under great pressure. The cutting edge is visibly damaged.
The saw is pulled to the left or right when sawing. This is caused by uneven sharpening of the
chain.
Important: Sharpen frequently, but without removing too much metal!
Generally, 2 or 3 strokes of the file will be enough.
Have the chain resharpened at a service centre when you have already sharpened it yourself sev-
eral times.
Proper sharpening:
CAUTION: Use only chains and guide bars designed for this saw!
All cutters must be of the same length (dimension a). Cutters with different lengths result in rough
running of the chain and can cause cracks in the chain.
Minimum cutter length is 3 mm. Do not resharpen the chain when the minimum cutter length has
been reached; at this point, the chain must be replaced.
The depth of the cut is determined by the difference in height between the depth limiter (round
nose) and the cutting edge.
The best results are obtained with a depth-limiter depth of 0.65 mm (.025”).
CAUTION: Excessive depth increases the risk of kickback!
11
a
a
a
0.65 mm
(.025")
0.65 mm
(.025")
min.
3 mm (0.11")
6
STOP