Makita UC4551A, UC4050A, UC4550A Trouble Shooting, Optional Accessories, Possible cause Remedy

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TROUBLE SHOOTING

Before asking for repairs, conduct your own inspection first. If you find a problem that is not explained in the manual, do not attempt to dismantle the tool. Instead, ask Makita Authorized Service Centers.

 

Malfunction status

Possible cause

Remedy

 

 

 

 

 

 

No power supply.

Connect to the power supply.

 

 

Check the power supply.

 

 

 

 

 

 

 

 

The chain saw does not

Cable defective.

Stop using the tool immediately, and ask your local

 

authorized service center.

 

 

 

start.

 

 

 

 

 

Tool malfunction.

Stop using the tool immediately, and ask your local

 

 

 

 

authorized service center.

 

 

 

 

 

 

 

 

Chain does not run.

Chain brake is engaged.

Release chain brake.

 

 

 

 

 

Insufficient performance.

Carbon brush worn down.

Ask your local authorized service center for repair.

 

 

 

 

 

 

Oil tank is empty.

Fill the oil tank.

 

 

 

 

 

No oil on the chain.

Oil guide groove is dirty.

Clean the groove.

 

 

 

 

 

 

Oil pump adjusting screw

Adjust the oil pump feed rate.

 

 

incorrectly adjusted.

 

 

 

 

 

 

 

 

Chain does not stop

 

Stop using the tool immediately, and ask your local

 

even the chain brake is

Brake band worn down.

 

authorized service center.

 

engaged.

 

 

 

 

 

 

 

 

 

 

Loose guide bar or saw

Adjust the guide bar and saw chain tension.

 

 

chain.

 

The tool vibrates

 

 

 

 

 

abnormally.

Tool malfunction.

Stop using the tool immediately, and ask your local

 

 

 

 

authorized service center.

 

 

 

 

 

 

 

 

014314

 

 

OPTIONAL ACCESSORIES

CAUTION:

These accessories or attachments are recommended for use with your Makita tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Makita Service Center.

Saw chain

Guide bar cover

Guide bar

Saw chain oil

NOTE:

Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

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Contents Electric Chain Saw English Original instructions SpecificationsSymbol Power supplyGeneral Power Tool Safety Warnings Chain saw safety warnings Protection against electric shock Additional Safety RulesProper use Personal protective equipmentKickback First aid Safety featuresMaintenance Transport and storageFor Model UC3050A, UC3550A, UC4050A, UC4550A Designation of PartsFor Model UC3051A, UC3551A, UC4051A, UC4551A For nut models AssemblyRemoving or installing sprocket cover Removing or installing saw chainAdjusting dial Engaging extension cord Adjusting saw chain tensionSwitch action OperationChecking the chain tension Checking the switch actionChecking the run-down brake Adjusting the chain lubricationChecking the chain brake Checking the chain oilerFelling BuckingLimbing Burrowing and parallel-to-grain cutsCleaning the chain saw MaintenanceChecking the plastic housing File and file guiding Sharpening the saw chainSharpen the saw chain when Sharpening criteriaMaintaining the chain and run-down brakes Cleaning the guide bar and lubricating the return sprocketCleaning the oil guide New saw chainsStoring tool Replacing carbon brushesOptional Accessories Trouble ShootingPossible cause Remedy Makita Corporation