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

 

 

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

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Dolmar PE-251 instruction manual Storage, Maintenance schedule, Fault location

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.