Dolmar PB-250.4 用户手册

OPERATION

1. Starting

1) When the engine is cold, or when the fuel it refueled

(1) Set this machine on a flat space.

(2) Set the stop switch to “ I “ position.

(3) Continue to push the primer pump until fuel enters into the

primer pump.

• In general, fuel enters into the carburetor by 7 to 10 pushes.
• If the primer pump is pushed excessively, an excess of

gasoline returns to the fuel tank.

(4) Lifting the choke lever of the air cleaner right side, close the

choke lever.

(5) Hold the main handle with a left hand to prevent the engine

from moving, settle down to take the stable position.

(6) 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.

• Never pull the rope to the full.
• Once the start knob is pulled, never release your hand

immediately. Hold the start knob until it returns to its original

point.

(7) When the engine starts, open the choke lever.

• Open the choke lever progressively while checking the engine

operation. Be sure to open the choke lever to the full in the

end.

• In cold or when the engine is cooled down, never open the

choke lever suddenly. Otherwise, the engine may stop.

(8) Continue warm-up operation for 2 to 3 minutes.

(9) Rotation of the engine speed stabilizes and when from low

speed making at high speed rotation, if reaches the point

where it accelerates smoothly, it is completion of warming-up.

WARNING

• Never attempt engine start in a place where the fuel has been supplied. When starting the engine, keep a distance of at least 3 m.

- Otherwise, it will may cause ignition or fire.

• Exhaust gas from the engine has toxic consequences. Do not operate the engine in a poorly-ventilated place, such as in a tunnel,

building, etc.

- Operating the engine in the poorly-ventilated place may cause poisoning by exhaust gas.

• In case of detection of any abnormality in sound, odor, vibration after start, stop the engine immediately and carry out inspection.

- If the engine is operated without attending such abnormality, an accident may occur.

• Confirm that the engine stops when the stop switch is set to “O” position.

(2)

Stop Switch

Primer pump

Open

(6)

(7)

(3)

(4)