Storage, Maintenance schedule, Fault location

STORAGE

–When the machine is in storage for a long time, drain fuel from the fuel tank and carburetor, as follows: Drain all fuel from the fuel tank. Dispose of properly and in accordance with all local laws.

–Remove the spark plug and a few drops of oil into the spark plug hole. Then, pull the starter gently, so that oil covers the engine inside and tighten

the spark plug.	Drain fuel	Humidity
		Humidity

–Clear dirt or dust from the cutter blade and outside of engine, wipe them with a oil-immersed cloth and keep the machine in a place as dry as possible.

Maintenance schedule

General	Engine assembly, screws and	Visual inspection for damage and tightness
	nuts	Check for general condition and security

After each refuelling	Control lever	Functional check
	I-O switch	Functional check

Daily	Air filter	To be cleaned
	Cooling air duct	To be cleaned
	Cutting blade	Check for damage and sharpness
	Idling speed	Inspection (cutting blade must not move)

Weekly	Spark plug	Inspection, replace if necessary
	Muffler	Check and if necessary clean the opening

Quarterly	Suction head	To be replaced
	Fuel tank	To be cleaned

Shuting down procedure	Fuel tank	Empty fuel tank
	Carburetor	Operate until engine runs out of fuel

Fault location

Fault	System	Observation

Engine not starting or with	Ignition system	Ignition spark O.K.
difficulty
		No ignition spark
	Fuel supply	Fuel tank filled
	Compression	No compression when
		pulled over
	Mechanical fault	Starter not engaging
Warm start problems		Tank filled ignition spark
		existing
Engine starts but dies	Fuel supply	Tank filled

Insufficient performance	Several systems	Engine idling poor
	may simultaneously
	be affected

Cause

Fault in fuel supply or compression system, mechanical defect

I-O switch operated, wiring fault or short circuit, spark plug or connector defective, ignition module faulty

Incorrect choke position, carburetor defective, fuel supply line bent or blocked, fuel dirty.

Cylinder bottom gasket defective, crankshaft seals damaged, cylinder or piston rings defective or improper sealing of spark plug

Broken starter spring, broken parts inside of the engine

Carburetor contaminated, must be cleaned

Incorrect idling adjustment, carburetor contaminated

Fuel tank vent defective, fuel supply line interrupted, cable or I-O switch faulty

Air filter contaminated, carburetor contaminated, muffler clogged, exhaust duct in the cylinder clogged

PE-251 specifications

The Dolmar PE-251 is a versatile and powerful chainsaw designed for both professional and amateur use. Known for its reliability and robustness, this chainsaw is particularly well-suited for light to medium-duty tasks, making it an excellent choice for homeowners, gardeners, and small-scale forestry operations.

One of the standout features of the Dolmar PE-251 is its lightweight design, which enhances maneuverability and reduces user fatigue. Weighing in at just around 5.5 kg, it enables longer operating periods without compromising performance. The engine, with a displacement of 25.4 cc, delivers a high power-to-weight ratio, ensuring that users can tackle a range of cutting tasks, from trimming branches to felling smaller trees.

The Dolmar PE-251 is equipped with an advanced 2-stroke engine that not only provides exceptional power but also features low emissions, aligning with contemporary environmental standards. This technology ensures that users can work efficiently without contributing excessively to air pollution. The engine operates smoothly, thanks to a well-designed intake and exhaust system that optimizes fuel and air flow.

Another significant characteristic of the PE-251 is its easy-start mechanism, which features a primer bulb and a precision-engineered recoil starter. This technology reduces the effort required for starting the machine, allowing users to get to work quickly. Additionally, the chainsaw incorporates an adjustable oil pump that allows for accurate lubrication of the chain, enhancing performance and prolonging the life of the saw.

Safety is a priority with the Dolmar PE-251, evident in its built-in safety features. The chainsaw includes a chain brake, which can be activated instantly to stop the chain in case of kickback, a common hazard during cutting tasks. Furthermore, the handle is ergonomically designed for a comfortable grip, providing better control and reducing the risk of accidents.

In conclusion, the Dolmar PE-251 is an excellent choice for users seeking a reliable, lightweight chainsaw with innovative features that enhance performance and safety. Whether for maintaining a garden, undertaking landscaping projects, or dealing with storm damage, this chainsaw delivers efficiency and ease of use, making it a valuable addition to any toolkit.