Dolmar PB-250.4 instruction manual Inspection and Maintenance, Replacement of engine oil

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INSPECTION AND MAINTENANCE

DANGER

•Before inspection and maintenance, stop the engine and allow it to cool. Remove also the spark plug and plug cap.

-If inspection or maintenance is attempted immediately after engine stop or with the plug cap left attached, the operator may suffer burn or an accident due to careless startup.

•After inspection and maintenance, be sure to confirm that all parts are assembled. Then, proceed to operation.

1.Replacement of engine oil

Deteriorated engine oil will shorten the life of the sliding and rotating parts to a great extent. Be sure to check the period and quantity of replacement.

DANGER

•In general, the engine main unit and engine oil still remain hot just after the engine is stopped. In replacement of oil, confirm that the engine main unit and engine oil are sufficiently cooled down. Otherwise, there may remain a risk of scald. In addition just after of the engine stopping because oil does not finish to return in the oil case, becomes cause of the oil inserting too much.

•If the oil filled above the limit, it may be contaminated or may catch fire with white smoke.

Interval of replacement: Initially, every 20 operating hours, and subsequently every 50 operating hours

Recommended oil: SAE10W-30 oil of API Classification SF Class or higher (4-stroke engine oil for automobile)

In replacement, perform the following procedure.

(1)Confirm that the tank cap is tightened securely.

(2)Detach the oil cap.

-Keep the oil gauge free from dust or dirt.

(3)The machine it can tilt to the blower port side, drain oil.

-Drain oil in a container.

(4)Please make the machine vertical (under the protector), refill oil to the shelf inside the oil pipe.

(5)After refill, securely tighten the oil gauge. Insufficient tightening of the oil gauge will lead to oil leakage.

(3)

(4)

Shelf

Points in replacement of engine oil

•Never discard replaced engine oil in garbage, earth or sewage ditch. Disposal of oil is regulated by law. In disposal, always follow the relevant laws and regulations. For any points remaining unknown, contact Authorized Service Agent.

•Oil will deteriorate even when it is kept unused. Perform inspection and replacement at regular intervals (replace with new oil every 6 months).

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Contents PB-250.4 ImportanteTable of Contents EnglishSafety Instructions 15metersResting Transport Refuelling Maintenance Tool Replacement MetersMethod of operation Specification NGK CMR6ADesignation of Parts Assembly Instructions Always wear protective glovesBefore Start of Operation Point 1 in Replacement of Oil Oil GaugePoint 2 in Replacement of Oil If oil spills out Inspection and Refill of Engine OilStorage of machine and refill tank Points for FuelStarting When the engine is cold, or when the fuel it refueledOperation Checkup of low-speed rotation Adjustment of IdlingStopping Dust Collection Operation Operation MethodBlower operation Points in replacement of engine oil Inspection and MaintenanceReplacement of engine oil Cleaning of air cleaner Checking the spark plugReplacement of gaskets and packings Cleaning the fuel filterCleaning of parts StorageFault location Troubleshooting State of abnormality Probable cause malfunction RemedyEmission Compliance Period Manufacturers Warranty Coverage Owners Warranty ResponsibilitiesHOW to File a Claim What is CoveredWhat is not Covered Waranty Commencement DateMaintenance Statements Where to GET Warranty ServiceParts Covered Under the California Emission Warranty Repair and Replacement of EMISSION-RELATED Parts Obtaining Warranty Service HOW to Make a Claim

PB-250.4 specifications

The Dolmar PB-250.4 is a robust and efficient backpack blower designed for both commercial and residential use. Known for its powerful performance and user-friendly operation, the PB-250.4 stands out as a reliable choice for landscaping professionals and homeowners alike.

One of the main features of the Dolmar PB-250.4 is its impressive engine. Equipped with a 24.5 cc, 2-stroke engine, it delivers a commendable airflow of up to 700 CFM (cubic feet per minute) and a maximum airspeed of 160 mph. This power allows users to tackle heavy debris, leaves, and grass clippings with ease, making yard maintenance swift and effective.

The design of the PB-250.4 emphasizes comfort and ergonomic use. It comes with a padded shoulder harness, which distributes the weight evenly and reduces fatigue during extended use. Additionally, the adjustable throttle and ergonomic handle provide better control and precision, enhancing the overall user experience.

The technology behind the Dolmar PB-250.4 reflects a commitment to efficiency and environmental responsibility. The blower incorporates the advanced 2-stroke engine technology, which not only provides superb power but also integrates a clean-air system that reduces emissions, making it a more eco-friendly option compared to older models.

Easy starting is another characteristic that sets the PB-250.4 apart. The blower is equipped with a reliable starting system that minimizes resistance for an effortless start, even in cold conditions. This feature is particularly beneficial for users who may need to start and stop the blower frequently throughout their tasks.

Maintenance of the PB-250.4 is straightforward, thanks to its accessible components and design features. The air filter can be easily cleaned and replaced, ensuring that the engine runs optimally with minimal downtime.

In summary, the Dolmar PB-250.4 is a high-performance backpack blower that combines power, efficiency, and comfort in a user-friendly package. Its robust engine, ergonomic design, and commitment to low emissions make it an excellent choice for anyone looking to maintain their outdoor spaces effectively. Whether for professional landscaping or home use, the PB-250.4 delivers the performance and reliability users demand.
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