Adjustment Of Idling - Makita BHX2501 Instruction Manual

• The engine may be damaged if the choke lever is moved further beyond the "CLOSE" position.
• If the engine fires and stops, return this lever to the "OPEN" position and pull the starter handle several times to start the engine again.
• If the operator keeps pulling the starter handle several times with the choke lever left in the "CLOSE" position, the engine may be difficult to
start because of flooding of the fuel.
• In case of flooding of the fuel, remove the spark plug and pull the handle several times rapidly to discharge any excess fuel. Dry the spark
plug electrode.
• When the throttle valve does not return to a position in contact with the idling adjusting screw even if the throttle lever is set to the low speed,
correct the control cable catching state to ensure proper return of the valve.
2) When the engine is warm
(1) Place the engine on a flat ground.
(2) Press the primary pump several times.
(3) Confirm that the choke lever is open.
(4) Hold the main handle with left hand to prevent the engine from moving.
(5) Pull out slowly the starter handle till a certain resistance is felt. Return the starter handle backward once from this position, then pull it
out with force.
(6) When the engine is difficult to start, open the throttle valve by about 1/3.
2. Stopping
Release the trigger lever to reduce the engine speed, and set the stop
switch to the "O" position.
(Release throttle lever lock if it is locking the trigger lever in the fully
open position.)

ADJUSTMENT OF IDLING

The carburetor is factory adjusted. Please do not adjust other than idling adjusting. When adjustment becomes necessary, please consult your
dealership or an authorized service agent.
Checkup of low-speed rotation
Set the low-speed rotation to 3500 rpm (min
• If it is necessary to change the rotation speed, regulate the adjusting
screw, with Phillips screwdriver.
• Turn the adjusting screw to the right, and the engine speed will
increase. Turn the adjusting screw to the left, and the engine speed will
drop.
NOTE
DANGER
–1
).
12
Carburetor
Stop Switch
Adjusting screw