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WARNING!

Read and understand all instructions.

 Failure to follow 

all instructions listed below, may result in electric shock, 
fire and/or serious personal injury.

READ ALL INSTRUCTIONS

For safe operation, read and understand all instruc-
tions before using this product. 

Follow all safety instruc-

tions. Failure to follow all safety instructions listed below, 
can result in serious personal injury.

Do not allow children or untrained individuals to use this 
unit.

Never let anyone use the machine who has not received 
adequate instructions in the machine’s proper use. This 
applies to rentals as well as privately owned units and 
also to the power head it is attached to.

Always  wear  safety  glasses  with  side  shields.
Everyday glasses have only impact resistant lenses. They 
are NOT safety glasses. Following this rule will reduce the 
risk of eye injury.

Product users on United States Forest Service land, and 
in some states, must comply with fire prevention regula-
tions.  This  product  is  equipped  with  a  spark  arrestor; 
however, other user requirements may apply. Check with 
your federal, state, or local authorities.

Wear heavy, long pants, boots, and gloves. Do not wear 
loose fitting clothing, short pants, or go barefoot. Do not 
wear jewelry of any kind.

Never operate this unit on the operator’s left side.

Secure long hair above shoulder level to prevent entangle-
ment in moving parts.

Keep  all  bystanders,  children,  and  pets  at  least  50  ft. 
away.

Do not operate this unit when you are tired, ill, or under 
the influence of alcohol, drugs, or medication.

Do not operate in poor lighting.

Do not operate in rain or use in damp or wet environ-
ments.

Keep firm footing and balance. Do not overreach. Over-
reaching can result in loss of balance or exposure to hot 
surfaces.

Keep all parts of your body away from any moving part.

To  avoid  hot  surfaces,  never  operate  the  unit  with  the 
bottom of the engine above waist level.

Do not touch area around the muffler or cylinder of the 
unit. These parts get hot from operation.

GENERAL SAFETY RULES

Always stop the engine and remove the spark plug wire 
before  making  any  adjustments  or  repairs  except  for 
carburetor adjustments.

Inspect the unit before each use for loose fasteners, fuel 
leaks, etc. Replace any damaged parts before use.

The chain may rotate during carburetor adjustments.

It has been reported that vibrations from hand-held tools 
may contribute to a condition called Raynaud’s Syndrome 
in  certain  individuals.  Symptoms  may  include  tingling, 
numbness and blanching of the fingers, usually apparent 
upon exposure to cold. Hereditary factors, exposure to 
cold and dampness, diet, smoking and work practices 
are all thought to contribute to the development of these 
symptoms. It is presently unknown what, if any, vibrations 
or extent of exposure may contribute to the condition. 
There are measures that can be taken by the operator to 
possibly reduce the effects of vibration:

  a)  Keep your body warm in cold weather. When operat-

ing the unit wear gloves to keep the hands and wrists 
warm. It is reported that cold weather is a major factor 
contributing to Raynaud’s Syndrome.

  b)  After each period of operation, exercise to increase 

blood circulation.

  c)  Take frequent work breaks. Limit the amount of ex-

posure per day.

  d)  Keep the tool well maintained, fasteners tightened and 

worn parts replaced.

  If you experience any of the symptoms of this condition, 

immediately  discontinue  use  and  see  your  physician 
about these symptoms.

Mix and store fuel in a container approved for gasoline.

Mix fuel outdoors where there are no sparks or flames. 
Wipe up any fuel spillage. Move 30 ft. away from refueling 
site before starting engine.

Stop  the  engine  and  allow  to  cool  before  refueling  or 
storing the unit.

Allow the engine to cool, empty the fuel tank, and secure 
the unit from moving before transporting in a vehicle.

Check for damaged parts. Before further use of the tool, 
any part that is damaged should be carefully checked 
to determine that it will operate properly and perform its 
intended function. Check for alignment of moving parts, 
binding of moving parts, breakage of parts, mounting, 
and any other conditions that may affect its operation. A 
guard or other part that is damaged should be properly 
repaired  or  replaced  by  an  authorized  service  dealer. 
Following this rule will reduce the risk of shock, fire, or 
serious injury.

Summary of Contents for RY52004A

Page 1: ...tured to Ryobi s high standard for dependability ease of operation and operator safety When properly cared for it will give you years of rugged trouble free performance WARNING To reduce the risk of i...

Page 2: ...n Maintenance 13 17 n Troubleshooting 18 n Warranty 19 21 n Parts Ordering Service 22 TABLE OF CONTENTS INTRODUCTION This product has many features for making its use more pleasant and enjoyable Safe...

Page 3: ...plug wire before making any adjustments or repairs except for carburetor adjustments n Inspect the unit before each use for loose fasteners fuel leaks etc Replace any damaged parts before use n The c...

Page 4: ...cut with the engine running at full speed Fully squeeze the throttle trigger and maintain a steady cutting speed n Do not force tool Use the correct tool for your applica tion The correct tool will d...

Page 5: ...Operator s Manual To reduce the risk of injury user must read and understand operator s manual before using this product Eye Hearing and Head Protection Wear eye hearing and head protection when opera...

Page 6: ...ntially hazardous situation which if not avoided may result in minor or moderate injury CAUTION Without Safety Alert Symbol Indicates a situation that may result in property damage WARNING To avoid se...

Page 7: ...ULB The priming bulb pumps fuel from the fuel tank to the car buretor This is necessary only when starting a cold engine or after refueling an engine that has run out of fuel SHOULDER STRAP The should...

Page 8: ...rd the packing material until you have care fully inspected and satisfactorily operated the tool n If any parts are damaged or missing please call 1 800 860 4050 for assistance PACKING LIST Power Head...

Page 9: ...ely in the positioning hole the shaft is not locked into place Slightly rotate from side to side until the button is locked into place n Tighten the knob securely CHAIN OILER Add bar and chain oil in...

Page 10: ...t firmly with both hands Always keep your left hand on the front handle and your right hand on the rear handle so your body is to the left of the chain line Never use a left handed cross handed grip o...

Page 11: ...branch will fall n Branches may fall in unexpected directions Do not stand directly under the branch being cut n The most typical cutting application is to position the unit at an angle of 60 or less...

Page 12: ...ne starts and runs n Lay the trimmer on a flat bare surface n PRIME Press the primer bulb 7 times n SET the start lever to the START position n PULL the rope until the engine starts n Allow the engine...

Page 13: ...y the parts shown on the parts list are intended to be repaired or replaced by the customer All other parts should be replaced at a Ryobi Authorized Service Center CHAIN TENSION See Figures 13 14 WARN...

Page 14: ...ion adjustment CHAIN TENSIONING SCREW Fig 19 BAR NUT Fig 20 n Remove all slack from chain by turning the chain tension ing screw clockwise assuring that the chain seats into the bar groove during tens...

Page 15: ...ighten securely n Check and refill the chain oiler tank every time the engine is fueled NOTE Do not use dirty used or otherwise contaminated oils Damage may occur to the oil pump bar or chain IDLE SPE...

Page 16: ...32 in diameter round file and holder n Keep the file level with the top plate of the tooth Do not let the file dip or rock LEFT HAND CUTTERS RIGHT HAND CUTTERS Fig 27 CAUTION Dull or improperly sharpe...

Page 17: ...l cap is loos ened check valve may be faulty or filter clogged Replace fuel cap if required SPARK PLUG ThisengineusesaChampionRCJ 6Ywith 025in electrode gap Use an exact replacement and replace annual...

Page 18: ...warm up If engine does not accelerate after three minutes contact a servicing dealer Engine starts but will only run at high speed at half choke Carburetor requires adjustment Contact a servicing deal...

Page 19: ...to any Ryobi Technologies Inc product that has been altered or modified The warranty does not extend to repairs made necessary by normal wear or by the use of parts or accessories which are either INC...

Page 20: ...obi Technologies Inc service dealer as soon as a problem exists The warranty repairs should be completed in a reasonable amount of time not to exceed 30 days If you have any questions regarding your w...

Page 21: ...des Spark Plug X ALL EMISSIONS RELATED PARTS ARE WARRANTED FOR TWO YEARS OR FOR THE PERIOD OF TIME PRIOR TO THE PARTS FIRST SCHEDULED REPLACEMENT WHICHEVER COMES FIRST THIS PRODUCT WAS MANUFACTURED WI...

Page 22: ...sit Please call 1 800 860 4050 for your nearest Ryobi Authorized Service Center You can also check our web site at www ryobitools com for a complete list of Authorized Service Centers MODEL NO AND SER...

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