Dolmar PB-251.4 User Manual [en, es, fr]

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GASOLINE BLOWER

SOUFFLEUR À ESSENCE

SOPLADOR DE GASOLINA

DOLMAR CA Statement

PB-251.4

DOLMAR non CA Statement

PB-250.4

INSTRUCTION MANUAL

(P2~P19)

INSTRUCTIONS D’EMPLOI

(P20~P37)

Important:

Read this instruction manual carefully before putting the Blower into operation and strictly observe the safety regulations! Preserve instruction manual carefully!

Importante:

Lisez attentivement ce manuel utilisateur avant de mettre en route le souffleur et respectez scrupuleusement les consignes de sécurité.

Conservez soigneusement ce manuel.

INSTRUCCIONES DE MANEJO

Importante:

 

(P38~P55)

Las bien este manual antes de poner el soplador en funcionamiento, y observe

estrictamente las medidas de seguridad. Conserve este manual de instrucciones.

 

WARNING: The Engine Exhaust from this product contains chemicals known to

the state of California to cause cancer, birth defects or other reproductive harm.

English

Thank you very much for selecting the DOLMAR blower. We are pleased to be able to offer you the DOLMAR blower which is the result of a long development programme and many years of knowledge and experience.

The blower models PB-250.4 / PB-251.4 combines the advantages of state-of-the-art technology with ergonomic design. They are of light weight, handy, compact and represent professional equipment for a great variety of applications.

Please read, understand and follow this booklet which refers in detail to the various points that will demonstrate its outstanding performance. This will assist you to safety obtain the best possible results from your DOLMAR Blower.

Table of Contents

 

 

Page

Symbols ..........................................................................................

2

Safety instructions .......................................................................

3-5

Specification ...................................................................................

6

Designation of parts ........................................................................

7

Assembly instructions ....................................................................

8

Before start of operation .........................................................

9-10

Operation ................................................................................

11-12

Adjustment of idling ......................................................................

12

Operation method .........................................................................

13

Inspection and maintenance ...................................................

14-16

Storage ..........................................................................................

16

Troubleshooting ............................................................................

18

SYMBOLS

It is very important to understand the following symbols when reading this instructions manual.

WARNING/DANGER

Read, Understand and Follow

Instruction Manual

Forbidden

No Smoking

No Open Flame

Protective Gloves must be Worn

Keep the Area of Operation

Clear of All Persons and Pets

Wear Eye and Ear Protection

Fuel (Gasoline)

Engine-manual Start

Emergency Stop

First Aid

Recycling

ON/START

OFF/STOP

Severing of fingers or hand, impeller blade

2

SAFETY INSTRUCTIONS

General Instructions

To ensure correct and safe operation, the user must read, understand and follow this instruction manual to assure familiarity with the handling of the blower (1). Users insufficiently informed will risk danger to themselves as well as others due to improper handling.

It is recommended only to loan the blower to people who have proven to be experienced with blowers.

Always hand over the instruction manual.

First-time users should ask the dealer for basic instructions to familiarize oneself with the handling of a blower.

Children and young persons aged under 18 years must not be allowed to operate the blower. Persons over the age of 16 years may however use the tool for the purpose of being trained only while under the direct supervision of a qualified trainer.

Use blowers with the utmost care and attention.

Operate the blower only if you are in good physical condition.

Perform all work conscientiously and carefully. The user has to accept responsibility for others.

Never use the blower while under the influence of alcohol or drugs

(2).

Do not use the unit when you are tired.

Save these instructions for future referral.

Personal Protective Equipment

The clothing worn should be functional and appropriate, I. e. It should be tight-fitting but not cause a hinderance. Do not wear jewelry, clothing or long hair which could be drawn into the air intake.

In order to avoid head-, eye-, handor foot injuries as well as to protect your hearing the following protective equipment and protective clothing must be used during operation of the blower.

Pay particular attention to the following regulations

Clothing must be sturdy and snug-fitting, but allow complete freedom of movement. Avoid loose-fitting jackets, flared or cuffed pants, scarfs, unconfined long hair or anything that could be drawn into the air intake. Wear overalls or long pants to protect your legs. Do not wear shorts. (4)

Blower noise may damage your hearing. Wear sound barriers (ear plugs or ear mufflers) to protect your hearing. Continual and regular users should have their hearing checked regularly. (3)

Use of gloves when working with the blower is recommended. Good footing is most important. Wear sturdy shoes with nonslip soles. (4)

Proper eye protection is a must. Even though the discharge is directed away from the operator, ricochets and bouncebacks can occur during blower operation. (3)

Never operate a blower unless wearing goggles or properly fitted safety glasses with adequate top and side protection which comply with ANSI Z 87. 1 (or your applicable national standard).

(1)

(2)

(3)

(4)

Starting up the blower

• Please make sure that there are no children or other people within a

 

working range of 15 meters (5), also pay attention to any animals in

 

the working vicinity. Never use the blower in urban areas.

 

• Before operating, always check that the blower is safe for

 

operation:

 

Check the security of the throttle lever. The throttle lever should be

15meters

checked for smooth and easy action. Check for proper functioning

of the throttle lever lock. Check for clean and dry handles and test

 

the function of the l-O switch. Keep handles free of oil and fuel.

 

 

(5)

3

Start the Blower only in accordance with the instructions. Do not use any other methods for starting the engine (6) !

Use the blower and the tools supplied only for applications specified.

Start the blower engine only after the entire tool has been assembled. Operation of the tool is permitted only after all the appropriate accessories are attached.

The engine is to be switched off immediately if there are any engine problems.

When working with the blower, always wrap your fingers tightly around the handle, keeping the control handle cradled between your thumb and forefinger. Keep your hand in this position to have your machine under control at all times. Make sure your control handle (and grip for vacuum attachment) are in good condition and free of moisture, pitch, oil or grease.

Always ensure a safe, well-balanced footing.

Operate the blower in such a manner as to avoid inhalation of the exhaust gases. Never run the engine in enclosed rooms (risk of suffocation and gas poisoning). Carbon monoxide is an odorless gas. Always ensure there is adequate ventilation.

Switch off the engine when resting and when leaving the blower unattended. Place it in a safe location prevent danger to others, setting fire to combustible materials, or damage to the machine.

Never lay the hot blower onto dry grass or onto any combustible materials.

All protective parts and guards supplied with the machine must be used during operation.

Never operate the engine with a faulty exhaust muffler.

Shut off the engine during transport (7).

Position the blower safely during car or truck transportation to avoid fuel leakage.

When transporting the blower, ensure that the fuel tank is completely empty.

(6)

Resting

Transport

Refuelling

Maintenance

Tool Replacement

(7)

Refuelling

Shut off the engine during refuelling (7), keep well away from open flame (8) and do not smoke.

Avoid skin contact with petroleum products. Do not inhale fuel vapor. Always wear protective gloves during refuelling. Change and clean protective clothing at regular intervals.

Take care not to spill either fuel or oil in order to prevent soil contamination (environmental protection). Clean the blower immediately after fuel has been spilt. Allow wet cloths to dry before disposing in properly, covered container to prevent spontaneous combustion.

Avoid any fuel contact with your clothing. Change your clothing immediately if fuel has been spilled on it (fire hazard).

Inspect the fuel cap at regular intervals making sure that it stays securely fastened.

Carefully tighten the locking screw of the fuel tank. Change locations to start the engine (at least 3 meters away from the place of refuelling) (9).

Never refuel in closed rooms. Fuel vapors accumulate at ground level (risk of explosions)

Only transport and store fuel in approved containers. Make sure stored fuel is not accessible to children.

Do not attempt to refuel a hot or a running engine.

(8)

3 meters

(9)

4

Method of operation

Use the blower only in good light and visibility. During cold seasons beware of slippery or wet areas, ice and snow (risk of slipping). Always ensure a safe footing.

Never work on unstable surfaces or sleep terrain.

To reduce the risk of personal injury, do not direct air blast towards bystanders, since the high pressure of the air flow could injure eyes and could blow small objects at great speed.

Never insert any foreign object into the air intake of the machine or into the nozzle of the blower. It will damage the fan wheel and may cause serious injury to the operator or bystanders as a result of the object or broken parts being thrown out at high speed.

• Pay attention to the direction of the wind, i.e., do not work against

(10)

the wind.

 

To reduce the risk of stumbling and loss of control, do not walk backward while operating the machine.

Always shut off the engine before cleaning or servicing the unit or replacing parts.

Maintenance instructions

Be kind to the environment. Operate the blower with as little noise and pollution as possible. In particular check the correct adjustment of the carburetor.

Clean the blower at regular intervals and check that all screws and nuts are securely tightened.

Never service or store the blower in the vicinity of open flames, sparks, etc. (11).

Always store the blower in a well-ventilated locked room and with an emptied fuel tank.

Observe and follow all relevant accident prevention

 

instructions issued by the trade associations and by

(11)

insurance companies. Do not perform any modifications to

the blower as this will risk your safety.

 

The performance of maintenance or repair work by the user is limited

 

to those activities as described in this instruction manual. All other

 

work is to be done by Authorized Service Agents.

 

Use only genuine spare parts and accessories supplied by DOLMAR.

 

Use of non-approved accessories and tools means increased risk of

 

accidents and injuries. DOLMAR will not accept any liability for accidents

 

or damage caused by the use of any non-approved attachment or

 

accessories.

 

First Aid

In case of accident make sure that a well-stocked first-aid kit is available in the vicinity of the operations. Immediately replace any item taken from the first aid kit.

When asking for help, please give the following information:

• Place of accident

 

• What happened

 

• Number of injured persons

 

• Extent of injuries

 

• Your name

(12)

Packaging

The DOLMAR blower is delivered in a protective cardboard box to prevent shipping damage. Cardboard is a basic raw material and is therefore consequently reusable or suitable for recycling (waste paper recycling).

5

SPECIFICATION

Model

 

PB-250.4

 

PB-251.4

 

 

Mass (without blower pipe)

(kg)

4.5 (9.9 lbs)

 

 

 

Dimension (without blower pipe L x W x H)

(mm)

350 × 231 × 368 (13.8 × 9.1 × 14.5 in)

 

 

 

Max. engine speed

( /min)

7,800

 

 

 

Idling speed

( /min)

3,500

 

 

 

Engine displacement

(mL)

24.5 (1.49 cu,in)

 

 

 

Fuel

 

Automobile gasoline

 

 

 

Fuel tank capacity

(L)

0.52 (17.6 fl.oz)

 

 

 

Engine oil

 

SAE 10W-30 oil of API Classification, Class SF or higher

 

(4-stroke engine for automobile)

 

 

Engine oil volume

(L)

0.08 (2.7 fl.oz)

 

 

 

Carburetor (Diaphragm-carburetor)

 

WALBRO WYL

 

 

 

Ignition system

 

Solid state ignition

 

 

 

Spark plug

 

NGK CMR6A

 

 

 

Electrode gap

(mm)

0.7 - 0.8 (0.028-0.031 in)

 

 

 

Noise Level 50 Feet per ANSI B175-2-2000

(dB(A))

67

 

 

 

Notes:

1.Use the oil and spark plug specified by DOLMAR.

2.This specification is subject to change without prior notice.

6

DESIGNATION OF PARTS

Vacuum set (Optional)

Optional

 

DESIGNATION OF PARTS

 

DESIGNATION OF PARTS

DESIGNATION OF PARTS

DESIGNATION OF PARTS

 

 

 

 

 

 

 

 

1.

Stop switch

8.

Fuel Tank

15.

Plug Cover

22.

Vacuum Pipe A

 

 

 

 

 

 

 

 

2.

Main Handle

9.

Fuel Tank Cap

16.

Spark Plug

23.

Vacuum Pipe B

 

 

 

 

 

 

 

3. Trigger Lever

10.

Muffler

17.

Oil Cap

24.

Vacuum Pipe C

 

 

 

 

 

4.

Primer Pump

11. Assist Handle

18. Blower Tube

25. Arrow Mark

 

 

 

 

 

 

 

5. Air Cleaner Cover

12.

Cruise Control Lever

19.

Blower Nozzle A

26.

Dust Bag

 

 

 

 

 

 

 

 

6.

Choke Lever

13.

Screw

20.

Blower Nozzle B

 

 

 

 

 

 

 

 

 

 

7.

Starter Handle

14.

Protector

21.

Elbow

 

 

 

 

 

 

 

 

 

 

 

7

ASSEMBLY INSTRUCTIONS

CAUTION : Before performing any work on the blower, always switch off the motor and pull the spark plug connectors off the spark plug.

Always wear protective gloves!

CAUTION : Start the blower only after having assembled it completely.

1.ASSEMBLY OF BLOWER PIPES

1)Align grooves in the blower pipe with pegs on the blower housing and slide the pipe onto housing.

2)Turn the blower pipe clockwise to lock it into place.

2.ASSEMBLYOF VACUUMATTACHMENT

1)Installing Vacuum pipe (nozzle)

(1)Loosen the screw and open the protector .

WARNING!

When using this machine as a blower, be sure to confirm that the screw is not loosened at each time of startup. If the screw is loosened, retighten it.

It is dangerous to operate the machine with the screw loosened. The operator’s finger or clothing may be caught in the impeller, which will result in a serious accident.

(2)

Align the

indicated on the vacuum pipe with the “

 

indicated on the blower. Then insert the vacuum pipe into the

 

blower.

 

 

(3)

Turn the vacuum pipe until the

is aligned with the “

 

indicated on the blower to lock the vacuum pipe.

WARNING!

Always hold the mounting end of the vacuum pipe when attaching/ detaching the vacuum pipe.

2)Installing Elbow and Dust Bag

(1)Open the fastener of the dust bag.

(2)Insert the elbow into the dust bag and take it out through the bag’s entry.

(3)Install the elbow on the blower.

WARNING!

Do not attempt to pick up large wood chips, metals, glass, stones, liquids, lighted cigarettes, fire works or

the like.

Always mount the protector/vacuum pipe in the right way before operation. Operation without the protector/vacuum pipe is dangerous, the impeller may catch the operator’s fingers or clothes and it can result in serious injury.

Screw

Protector

8

BEFORE START OF OPERATION

1.Inspection and Refill of Engine Oil

(1)Perform the following procedure, with the engine cooled down.

• Inspection Please inspect whether it makes the machine horizontal, removes the oil cap, there is a oil to inside the range of the upper limit lower limit mark of gauge. When it is insufficient, (especially, when it has not reached to the lower limit level), please refill new oil.

• Refill Verticality (under the suction port cover) please do the machine, remove the oil cap. When oil is supplied from the oil pipe port and oil level comes to the shelf inside the oil pipe, please stop oil supply.

(2)For reference, the oil refill time is about 10 h (refill frequency: 10 times).

(3)If the oil changes in color or mixes with dirt, replace it with new one. (For the interval and method of replacement, refer to P. 14)

Recommended oil: SAE 10W-30 oil of API Classification, Class SF or higher (4-stroke engine for automobile) Oil volume: Approx. 0.08 L (2.7 fl.oz)

Inspection method of engine oil

 

 

Upper limit

Upper limit

Lower limit

Lower limit

 

 

 

NOTE

If the engine is not kept upright, oil may go into around the engine, and may be refilled excessively.

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

Point 1 in Replacement of Oil “Oil Gauge”

Remove dust or dirt near the oil refill port, and detach the oil gauge.

Keep the detached oil gauge free of sand or dust. Otherwise, any sand or dust adhering to the oil gauge may cause irregular oil circulation or wear on the engine parts, which will result in troubles.

As an example to keep the oil gauge clean, it is recommended to insert the oil gauge on its knob side into the engine cover.

Shelf

Shelf

Point 2 in Replacement of Oil: “If oil spills out”

It becomes cause of the oil soiling. Be sure to wipe out spilt oil before start of operation.

9

2. Fuel supply

WARNING

When supplying the fuel, be sure to observe the following instructions to prevent ignition or fire:

-Fuel supply must be made in a place free of fire. Never bring the fire (smoking, etc.) near to the place of fuel supply.

-Stop the engine and allow the engine to cool down before fuel supply.

-Open the fuel tank cap full of fuel slowly. The fuel may sprout out under internal pressure.

-Take care not to spill the fuel. Any spilled fuel must be wiped clean.

-Carry out fuel supply in a well-ventilated place.

Handle the fuel with care.

-Fuel sticking to the skin or entering an eye may cause allergies or irritation. When any physical abnormality is detected, consult the medical specialist immediately.

STORAGE PERIOD OF FUEL

Fuel should be used up within a period of 4 weeks, even if it is kept in a special container in a well-ventilated shade. If a special container is not used or if the container is not covered, fuel may deteriorate in one day.

Storage of machine and refill tank

Keep the machine and tank at a cool place free from direct sunshine.

Never keep the fuel in the cabin or trunk.

FUEL

The engine is a four-stroke engine. Be sure to use an automobile gasoline (regular gasoline or premium gasoline).

Points for Fuel

Never use a gasoline mixture which contains engine oil. Otherwise, it will cause excessive carbon accumulation or mechanical troubles.

Use of deteriorated oil will cause irregular startup.

When refueling the fuel, be sure to stop the engine and confirm that the engine cools down.

REFUELING METHOD

Loosen the tank cap a little so that there will be no difference in atmospheric pressure.

Detach the tank cap, and refuel, discharging air by tilting the fuel tank so that the refuel port will be oriented upward. (Never refill fuel full to the oil refill port.)

After refueling, securely tighten the tank cap.

If there is any flaw or damage on the tank cap, replace it.

The tank cap is consumable, and therefore should be renewed every two to three years.

10

OPERATION

1. Starting

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.

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.

(2)

Stop Switch

(3)

Primer pump

(4)

Close

 

 

 

 

 

 

 

 

 

(6)

(7)

Open

11

NOTE

The engine may be damaged if the choke lever is moved further beyond the “CLOSE” position.

If the engine stops with an explosion sound or if the engine started, but stopped before operation of the choke lever, return this lever to the “OPEN” position and pull the starter handle several times to start the engine again.

If the operator keeps pulling the starter handle several times with the choke lever left in the “CLOSE” position, the engine may be difficult to start because of over-suction of the fuel.

In case of over-suction of the fuel, remove the spark plug and pull the handle several times rapidly to discharge any excess fuel. Dry the spark plug electrode.

When the throttle valve does not return to a position in contact with the idling adjusting screw even if the throttle lever is set to the low speed, correct the control cable catching state to ensure proper return of the valve.

2)When the engine is warm

(1)Place the engine on a flat ground.

(2)Press the primary pump several times.

(3)Confirm that the choke lever is open.

(4)Hold the main handle with a left hand to prevent the engine from moving, settle down to take the stable position.

(5)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.

(6)When the engine is difficult to start, open the throttle valve by about 1/3.

2. Stopping

 

Cruise control lever

1)

When the cruise control lever is OFF

 

 

 

OFF

 

ON

 

Release the trigger lever to reduce the engine speed, and set the

 

 

 

 

 

 

stop switch to the “O” position.

 

 

 

2)

When the cruise control lever is ON

 

 

 

 

Set the cruise control lever to the OFF position, reduce the engine

 

 

 

 

speed, and set the stop switch to the “O” position.

 

 

 

 

 

 

 

 

ADJUSTMENT OF IDLING

DANGER

The carburetor is the adjustment being completed at the time of factory shipment. Please do not adjust other than idling adjusting. When adjustment becomes necessary, please consult your dealership or an authorized service agent.

Checkup of low-speed rotation

 

Adjusting screw

Set the low-speed rotation to 3500 ( /min).

 

• If it is necessary to change the rotation speed, regulate the

 

adjusting screw, with Phillips screwdriver.

 

• Turn the adjusting screw to the right, and the engine rotation will

 

increase. Turn the adjusting screw to the left, and the engine

Carburetor

rotation will drop.

 

 

12

OPERATION METHOD

1.Blower operation

Hold the machine firmly during operation.

Direct the nozzle end toward the object to be dusted and pull the trigger lever.

The trigger lever can be fixed in an arbitrary position with the cruise control lever.

Maintain the trigger lever at a position where the engine speed appropriate for the operation is obtained and set the cruise control lever to the “ON” position.

To adjust the engine speed, set the cruise control lever to the “OFF” position once, adjust the engine speed with the trigger lever again, then set and fix the cruise control lever to the “ON” position.

Operation of the trigger lever with the cruise control lever in the “ON” position may cause failure.

The lower portion of the fuel tank acts as an assist handle, which enables operation with both hands. In this case, be sure to hold the assist handle with a right hand.

2.Dust Collection Operation

WARNING

Do not allow kerosene, gasoline, or lighted cigarette to be sucked into the machine.

-Otherwise, fire may occur.

Do not allow foreign materials, such as large wood chips, metals, glass, pebbles, etc., to be sucked into the machine.

-Otherwise, failure may occur.

Overfilling of the dust bag with dust may cause its overflow toward the engine side. Empty the bag in a proper timing.

-Otherwise, the fire may occur.

Carry the dust bag belt on the shoulder and adjust the belt length to ensure easy operation.

Confirm that the dust bag is not twisted and pull the trigger lever to start dust collection.

When the dust bag is filled with dust, remove the dust bag from the machine and open the

fastener to empty the bag.

NOTE

If this machine is operated with the protector oriented upwards or the main handle downwards, there may appear white smoke, oil contamination or oil leakage.

13

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).

14

2. Cleaning of air cleaner

WARNING INFLAMMABLES STRICTLY PROHIBITED

Interval of Cleaning and Inspection: Daily (every 10 operating hours)

(1)Remove the air cleaner cover-fixing bolts.

(2)Pull the cover lower side and detach the air cleaner cover.

(3)Turn the choke lever to the full close side, and keep the carburetor off from dust or dirt.

(4)If oil adheres to the element (sponge), squeeze it firmly.

(5)For heavy contamination:

1)Remove the element (sponge), immerse it in warm water or in water-diluted neutral detergent, and dry it completely.

2)Clean the element (felt) with gasoline, and dry it completely.

(6)Before attaching the element, be sure to dry it completely. Insufficient drying of the element may lead to difficult startup.

(7)Wipe out with waste cloth, oil adhering around the air cleaner cover and plate breather.

(8)Immediately after cleaning is finished, attach the air cleaner cover and tighten it with fixing bolts. (In remounting, first place the upper claw, and then the lower claw.)

Plate

Element (sponge)

Air cleaner cover

Breather Part

Element (felt)

Fixing bolt

Pick this part and remove the element (felt).

DANGER

Clean the element several times a day, if excessive dust adheres to it.

If operation continues with the element remaining not cleared of oil, oil in the air cleaner may fall outside, resulting in oil contamination.

3.Checking the spark plug

(1) Opening/closing the plug cover

(1)

 

 

 

 

 

 

 

 

 

When opening the cover, apply fingers to the main handle and

 

 

 

 

 

plug cover projection as shown in the figure right. Push up the

 

 

 

 

 

projection and slide the cover in the “OPEN” direction.

 

 

 

 

 

When closing the cover, slide the cover in the “CLOSE” direction

 

 

 

 

 

till the click under the plug cover projection rides over the engine

 

 

 

 

 

cover. Finally, push in the projection.

 

 

 

 

 

(2) Removing the spark plug

 

 

 

 

 

(2)

(3)

 

 

Use an attached box wrench to remove or install the spark plug.

 

 

(3) Checking the spark plug

 

 

 

Lateral electrode (-)

The clearance between two electrodes of spark plug (see the

 

 

 

 

 

figure left) is 0.7 to 0.8 mm. Adjust to the correct clearance when

 

 

 

 

 

it is too wide or too narrow.

 

 

 

 

 

Clean thoroughly or replace the spark plug if it has accumulated

 

 

Electrode clearance

 

carbon or contaminated.

 

 

 

 

 

 

0.7 - 0.8 mm

 

 

 

 

 

 

(4) Replacing the spark plug

 

 

 

(0.028-0.031 in)

 

For replacement, use NGK-CMR6A.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

4.Cleaning the fuel filter

Clogged fuel filter may cause difficulty of startup or failure of engine speed increase.

Check the fuel filter regularly as follows:

(1)Remove the fuel tank cap, drain the fuel to empty the tank. Check the tank inside for any foreign materials. If any, wipe clean such materials.

(2)Pull out the fuel filter with wire through the oil filling port.

(3)If the fuel filter surface is contaminated, clean it with gasoline. Foul gasoline must be disposed of according to the method specified by

each local authority. Excessively foul filter must be replaced.

Hose clamp

(4) Reset the fuel filter in the fuel tank and tighten firmly the fuel tank cap.

 

For replacement, contact your dealership or an authorized service

 

agent.

Fuel filter

 

Fuel tank cap

5.Inspection of bolts, nuts and screws

Retighten loose bolts, nuts, etc.

Check for fuel and oil leakage.

Replace damaged parts with new ones for safety operation.

6.Cleaning of parts

Keep the engine always clean.

Keep the cylinder fins free of dust or dirt. Dust or dirt adhering to the fins will cause seizure.

7.Replacement of gaskets and packings

In reassembling after the engine is dismounted, be sure to replace the gaskets and packings with new ones.

Any maintenance of adjustment work that is not included and described in this manual is only to be performed by Authorized Service Agents.

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.

DANGER

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 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.

(6)Remove the spark plug, and drip several drops of engine oil through the spark plug hole.

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

(8)During storage, in order for the machine to become uprighting, please keep.

(9)Keep the drained fuel in a special container in a well-ventilated shade.

16

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

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operating time

 

Before

After

 

Daily

 

30h

50h

200h

Shutdown

Corres-po

 

 

 

 

Item

 

operation

lubrication

 

(10h)

 

/rest

nding P

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine oil

Inspect/clean

 

 

 

 

 

 

 

 

9

 

 

 

 

 

 

 

 

 

 

 

 

Replace

 

 

 

 

 

 

 

*1

 

 

14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tightening parts

Inspect

 

 

 

 

 

 

 

 

16

(bolt, nut)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuel tank

Clean/inspect

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drain fuel

 

 

 

 

 

 

 

 

 

*3

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Throttle lever

Check function

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stop switch

Check function

 

 

 

 

 

 

 

 

 

11

 

 

 

 

 

 

 

 

 

 

 

 

 

Low-speed rotation

Inspect/adjust

 

 

 

 

 

 

 

 

 

12

 

 

 

 

 

 

 

 

 

 

 

 

 

Air cleaner

Clean

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

Ignition plug

Inspect

 

 

 

 

 

 

 

 

 

15

 

 

 

 

 

 

 

 

 

 

 

 

 

Cooling air duct

Clean/inspect

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inspect

 

 

 

 

 

 

 

 

 

16

Fuel pipe

 

 

 

 

 

 

 

 

 

 

 

 

Replace

 

 

 

 

 

 

 

 

*2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuel filter

Clean/replace

 

 

 

 

 

 

 

 

 

16

 

 

 

 

 

 

 

 

 

 

 

 

 

Clearance between air intake

Adjust

 

 

 

 

 

 

 

 

*2

 

valve and air discharge valve

 

 

 

 

 

 

 

 

 

 

 

 

Oil tube

Inspect

 

 

 

 

 

 

 

 

*2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engine overhaul

 

 

 

 

 

 

 

 

 

*2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Carburetor

Drain fuel

 

 

 

 

 

 

 

 

 

*3

16

 

 

 

 

 

 

 

 

 

 

 

 

 

*1 Perform initial replacement after 20h operation.

*2 For the 200 operating hour inspection, request Authorized Service Agent or a machine shop. *3 After emptying the fuel tank, continue to run the engine and drain fuel in the carburetor.

17

TROUBLESHOOTING

Before making a request for repairs, check a trouble for yourself. If any abnormality is found, control your machine according to the description of this manual. Never tamper or dismount any part contrary to the description. For repairs, contact Authorized Service Agent or local dealership.

 

State of abnormality

 

 

Probable cause (malfunction)

 

 

Remedy

 

 

 

 

 

 

Failure to operate primer pump

 

 

Push 7 to 10 times.

 

 

 

 

 

 

Low pulling speed of starter rope

 

 

Pull strongly.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Lack of fuel

 

Feed fuel.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clogged fuel filter

 

Clean

 

 

 

 

 

 

Broken fuel tube

 

Straighten fuel tube

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Deteriorated fuel

 

 

Deteriorated fuel makes starting more difficult.

 

 

 

 

 

 

 

 

 

Replace with new one. (Recommended

 

 

 

 

 

 

 

 

 

replacement: 1 month)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Excessive suction of fuel

 

 

Set throttle lever from medium speed to high

 

 

 

 

 

 

 

 

 

speed, and pull starter handle until engine

 

 

Engine does not start

 

 

 

 

 

starts.

 

 

 

 

 

 

 

If engine will not start still, remove spark plug,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

make electrode dry, and reassemble them as

 

 

 

 

 

 

 

 

 

they originally are. Then, start as specified.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Detached plug cap

 

 

Attach securely

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Contaminated spark plug

 

Clean

 

 

 

 

 

 

Abnormal clearance of spark plug

 

 

Adjust clearance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Other abnormality of spark plug

 

 

Replace

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal carburetor

 

 

Make request for inspection and maintenance.

 

 

 

 

 

 

Starter rope cannot be pulled

 

 

Make request for inspection and maintenance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal drive system

 

Make request for inspection and maintenance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Insufficient warm-up

 

Perform warm-up operation

 

 

 

 

 

 

Choke lever is set to “CLOSE” although engine

 

 

Set to “OPEN”

 

 

 

 

 

 

is warmed up

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clogged fuel filter

 

Clean

 

 

Engine stops soon

 

 

Contaminated or clogged air cleaner

 

Clean

 

 

Engine speed does not increase

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal carburetor

 

 

Make request for inspection and maintenance

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal drive system

 

Make request for inspection and maintenance

 

 

 

 

 

 

Detached throttle wire

 

 

Attach securely

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Abnormal drive system

 

Make request for inspection and maintenance

 

 

 

 

 

 

 

 

 

 

 

 

Engine does not stop.

 

 

Detached connector

 

 

Attach securely

 

 

 

 

 

 

Abnormal electric system

 

 

Make request for inspection and maintenance.

 

 

 

 

 

 

 

 

 

 

Run engine at idling, and set choke

 

 

 

 

 

 

 

 

lever to CLOSE.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

When the engine does not start after warm-up operation:

If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.

18

MAKITA LIMITED ONE YEAR WARRANTY

Warranty Policy

Every Makita tool is thoroughly inspected and tested before leaving the factory. It is warranted to be free of defects from workmanship and materials for the period of ONE YEAR from the date of original purchase. Should any trouble develop during this one year period, return the COMPLETE tool, freight prepaid, to one of Makita’s Factory or Authorized Service Centers. If inspection shows the trouble is caused by defective workmanship or material, Makita will repair (or at our option, replace) without charge.

This Warranty does not apply where:

repairs have been made or attempted by others:

repairs are required because of normal wear and tear:

the tool has been abused, misused or improperly maintained: alterations have been made to the tool.

IN NO EVENT SHALL MAKITA BE LIABLE FOR ANY INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES FROM THE SALE OR USE OF THE PRODUCT. THIS DISCLAIMER APPLIES BOTH DURING AND AFTER THE TERM OF THIS WARRANTY.

MAKITA DISCLAIMS LIABILITY FOR ANY IMPLIED WARRANTIES, INCLUDING IMPLIED WARRANTIES

OF “MERCHANTABILITY” AND “FITNESS FOR A SPECIFIC PURPOSE,” AFTER THE ONE YEAR TERM OF THIS WARRANTY.

This Warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. Some states do not allow limitation on how long an implied warranty lasts, so the above limitation may not apply to you.

19

Frençais

Vous venez d’acheter un souffleur DOLMAR, fruit d’importants programmes de développement et de nombreuses années d'études et d’expérience-et nous vous en remercions.

Les modèles PB-250.4 / PB-251.1 légers, pratiques et compacts, allient les avantages d’une technologie de pointe à une conception

ergonomique, et sont des outils de professionnels pour de norebreuses applications.

Lisez soigneusement le manuel, qui traite en détail des différents points des performances de la machine et vous aidera à en tirer le meilleur parti possible.

Table des Matières

 

 

Page

Symboles .......................................................................................

20

Consignes de sécurité .............................................................

21-23

Caractéristiques ............................................................................

24

Liste des pièces ............................................................................

25

Instructions de montage ................................................................

26

Avant mise en marche ..............................................................

27-28

Fonctionnement .......................................................................

29-30

Réglage du ralenti ..........................................................................

30

Mode opératoire ............................................................................

31

Inspection et maintenance .......................................................

32-34

Remisage .......................................................................................

34

Dépannage ....................................................................................

36

SYMBOLES

Lors de la lecture de ce manuel, prêtez une attention particuliêre aux symboles ci-après :

Attention! Danger!

Lire et suivre le manuel de fonctionnement

Interdit

Interdiction de fumer

Interdiction d’utilisation de produits inflammables

Port de gants de protection obligatoire

Zone de fonctionnement interdite aux humains et aux animaux

Port de lunettes de protection et cache-oreilles obligatoire

Essence et huile

Moteur - Mise en marche manuelle

Arrêt d’urgence

Premiers secours

Recyclage

Marche

Arrêt

Mutilation du doigt ou du bras, Roue mobile

20

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