7. Operation
OP9
■ADJUSTING CARBURETOR (OP9)
The carburetor has been adjusted at the factory. Should your unit need readjustment due to the changes in altitude or operating conditions, please let your skillful dealer make the adjustment. A wrong adjustment may cause damage to your unit. If you have to make the adjustment yourself, please carefully follow the procedure below.
NOTE
Be sure to adjust the carburetor with the bar chain attached.
1.Stop engine and screw in both H and L needles until they stop. Never farce. Then set them back the standard number of turns as shown below.
H needle: 11⁄4±1⁄4
L needle: 11⁄4±1⁄4
2.Start engine and allow it a few minutes warming up in low speed.
3.Turn L needle slowly clockwise to find the position where idling speed is maximum, set the needle back a quarter (1/4) turn counterclockwise. L needle should be set in 1/4 turn either wise from the standard position.
4.Turn idle adjusting screw (T) counterclockwise so that saw chain does not turn. If idling speed is too slow, turn the screw clockwise.
5.Make a test cut and adjust the H needle for best cutting power, not for maximum speed.
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