Dolmar MS-251.4, MS-250.4 Storage, Attention after long-time storage, Fault location

STORAGE

WARNING: When draining the fuel, be sure to stop the engine and confirm that the engine cools down.

Just after stopping the engine, it may still hot with possibility of burns, inflammability and fire.

ATTENTION: When the machine is kept out of operation for a long time, drain up all fuel from the fuel tank and carburetor, and keep it at a dry and clean place.

–Drain up fuel from the fuel tank and carburetor according to the following procedure:

1)Remove the fuel tank cap, and drain fuel completely.

If there is any foreign matter remaining in the fuel tank, remove it completely.

2)Pull out the fuel filter from the refill port using a wire.

3) Push the primer pump until fuel is drained from there, and drain fuel	Drain fuel	Humidity
coming into the fuel tank.

4)Reset the filter to the fuel tank, and securely tighten the fuel tank cap.

5)Then, continue to operate the engine until it stops.

–Remove the spark plug, and drip several drops of engine oil through the spark plug hole.

–Gently pull the starter handle so that engine oil will spread over the engine, and attach the spark plug.

–Attach the cover to the cutter blade.

–During storage, keep the rod horizontal or keep the machine upright with the blade edge oriented upward. (In this case, pay full attention to prevent the machine from falling.)

Never store the machine with the cutter blade edge oriented downward. Lubricating oil may spill out.

–Keep the drained fuel in a special container in a well-ventilated shade.

Attention after long-time storage

–Before startup after long-time shutdown, be sure to replace oil (refer to P 17). Oil will deteriorate while the machine is kept out of operation.

Fault location

Fault	System	Observation	Cause
Engine not starting or with	Ignition system	Ignition spark O.K.	Fault in fuel supply or compression system, mechanical
difficulty			defect
		No ignition spark	STOP-switch operated, wiring fault or short circuit, spark
			plug or connector defective, ignition module faulty
	Fuel supply	Fuel tank filled	Incorrect choke position, carburetor defective, fuel supply
			line bent or blocked, fuel dirty.
	Compression	No compression when	Cylinder bottom gasket defective, crankshaft seals
		pulled over	damaged, cylinder or piston rings defective or improper
			sealing of spark plug
	Mechanical fault	Starter not engaging	Broken starter spring, broken parts inside of the engine
Warm start problems		Tank filled ignition spark	Carburetor contaminated, have it cleaned
		existing
Engine starts but dies	Fuel supply	Tank filled	Incorrect idling adjustment, carburetor contaminated
			Fuel tank vent defective, fuel supply line interrupted,
			cable or STOP-switch faulty
Insufficient performance	Several systems	Engine idling poor	Air filter contaminated, carburetor contaminated, muffler
	may simultaneously		clogged, exhaust duct in the cylinder clogged
	be affected

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