Checking the chain brake
1
C
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 (C/1) 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 when you test the chain brake, do NOT use the chain saw. Take the chain saw to a MAKITA service center for repair.
Adjusting the carburetor
Important information:
The carburetor of this tool is fitted with limiter caps which restrict the range of adjustment and prevents
Optimum perfornance can only be achieved if the carbure- tor is adjusted correctly. For this work, which should be carried out by an expert, the engine must be warmed up and the air filter clean.
The carburetor has been adjusted by MAKITA on the basis of atmosheric pressure conditions at sea level. Other atmospheric pressure conditions or the
It is urgently recommended to use a revolution indicator (E/1) (order number 950 233 210) in order to achieve a correct adjustment of the carburetor. Adjust the carburetor using a 0.16" (4 mm) screwdriver (E/2, in assembly tool kit with 115i only).
The screwdriver shown (E/2) (order number 944 340 001) has a
Before adjusting the carburetor the engine must be warmed up for a period of
For adjusting the carburetor correctly the following steps must be carried out:
1. | Check adjustment | STOP | |
2. | Start engine | 2 | |
1 | |||
3. | Set idle speed | ||
DCS 431 | |||
4. | Adjust speed |
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5.Check idling speed
6.Check acceleration
7.Check max. speed or output
8.Repeat adjustment procedure starting with step 3, until idling speed, max. speed and acceleration are reached with the adjustment made.
Checking the chain lubrication
D |
Never work with the chain saw withoute sufficient chain lubri- cation. Otherwise the service life of the chain and guide bar will be reduced. Before starting work check the oil level in the tank and the oil feed.
Check the oil feed rate as described below:
-Start the chain saw.
-Hold the running chain saw approx. 6" (15 cm) above a trunk or the ground (use an appropriate base).
If the lubrication is sufficient, you will see a light oil trace because oil will be flung off the sawing device. Pay attention to the direction the wind is blowing and avoid unnecessary exposure to the oil spray!
2
1
E
Adjustment instructions (step 1) STOP
Before initial operation make sure that the adjusting screws (H and L) have not been set in all the way. Limiter caps do not protect the engine from leaning. Turn the two adjusting screws (H and L)
Start the engine and let it warm up (step 2)
Set idle speed (step 3)
-If the chain turns when the engine is idling, unscrew the
-Idling speed should be 2,500 rpm.
Adjust speed (output) (step 4)
-Adjust the speed by adjusting the main jet screw (H) to 12,500 (DCS 430, 431, 520) and 13.000 (DCS 520i, 540, 5200i) rpm.
Check idle speed (item 5)
-After having adjusted the max. speed ensure the idle speed is set to 2,500 rpm. (the chain must not turn). Use the idle jet screw (L) to regulate it. Turn in the screw (L) to speed up, and turn out the screw (L) to speed down the engine.
Check acceleration (item 6)
-Now check the acceleration, i. e. the time necessary for speeding up from idle speed to max. speed. To do this, press the throttle lever hard.
-If the acceleration is too low, turn out the idle jet screw (L) approx. 1/8 rotation.
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