Ryobi RY52002 Operator'S Manual Download Page 16

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MAINTENANCE

REPLACING THE BAR

See Figures 19 - 24.

WARNING:

To avoid possible serious injury, stop engine before re-
placing the bar, chain, or performing any maintenance
operation.

Remove the bar nut and drivecase cover.

The bar contains a bar stud slot that fits over the bar stud.

The bar also contains a chain tensioning pin hole which
fits over the chain tensioning pin.

Place the bar onto the bar stud so that the chain tension-

ing pin fits into the chain tensioning pin hole.

Fit the chain over the sprocket and into the bar groove.

The cutters on the top of the bar should face toward the
bar tip, in the direction of the chain rotation.

Replace the side case cover and install the bar nut.

Tighten the bar nut finger tight only. The bar must be
free to move for tension adjustment.

CHAIN

TENSIONING SCREW

Fig. 23

BAR NUT

Fig. 24

Remove all slack from chain by turning the chain tension-

ing screw clockwise, assuring that the chain seats into
the bar groove during tensioning.

Lift the tip of the bar up to check for sag. Release the tip

of the bar, and turn the chain tensioning screw 1/2 turn
clockwise. Repeat this process until sag does not exist.

Hold the tip of the bar up and tighten the bar nut se-

curely.

Chain is correctly tensioned when there is no slack on

the underside of the bar, the chain is snug, but it can be
turned by hand without binding.

NOTE:

If chain is too tight, it will not rotate. Loosen the

bar nut slightly and turn adjusting screw 1/4 turn counter-
clockwise. Lift the tip of the bar up and retighten bar nut.

CHAIN ROTATION

BAR NUT

CHAIN

SPROCKET

Fig. 22

BAR

DRIVECASE

COVER

BAR NUT

CHAIN

Fig. 19

DRIVECASE

COVER

CHAIN

TENSIONING PIN

BAR NUT

Fig. 20

BAR STUD SLOT

BAR STUD

CHAIN TENSIONING

PIN HOLE

BAR

SPROCKET

Fig. 21

Summary of Contents for RY52002

Page 1: ...anufactured 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 injury the user must read and understand the operator s manual before using this product Thank you for buying a Ryobi product ...

Page 2: ...14 n Maintenance 15 21 n Troubleshooting 22 n Warranty 23 25 n Parts Ordering Service 26 TABLE OF CONTENTS INTRODUCTION This product has many features for making its use more pleasant and enjoyable Safety performance and dependability have been given top priority in the design of this product making it easy to maintain and operate ...

Page 3: ...k 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 chain may rotate during carburetor adjustments n It has been reported that vibrations from hand held tools may contribute to a condition called Raynaud s Syndrome in certain individuals Symptoms may i...

Page 4: ...ng cut This unit should not be held at an angle over 60 from ground level n Keep the handles dry clean and free of oil or fuel mix ture n Shut off the engine and make sure the cutting attachment has stopped before setting the unit down n To prevent electrical shock or serious personal injury do not use this product with any AC power head n Follow the sharpening and maintenance instructions for the...

Page 5: ...manual before using this product Eye Hearing and Head Protection Wear eye hearing and head protection when operating this equipment Safety Footwear Wear non slip safety footwear when using this equipment Gloves Wear non slip heavy duty protective gloves when handling the pole pruner attachment and the saw chain Moving Parts Keep hands away from moving parts Keep Bystanders Away Keep all bystanders...

Page 6: ...entially 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 serious personal injury do not attempt to use this product until you read thoroughly and understand completely the operator s manual Save this operator s manual and review frequently for continuing saf...

Page 7: ...ement 30cc Bar length 10 in String cutting width 17 in String diameter 080 in STARTER GRIP BAR PRIMER BULB CHAIN OILER TANK CAP THROTTLE TRIGGER CHAIN ENGINE SWITCH PRUNER ATTACHMENT SHOULDER STRAP J BARRIER HANDLE COUPLER KNOB SCABBARD TRIMMER ATTACHMENT ...

Page 8: ...un out of fuel SHOULDER STRAP The shoulder strap helps support the weight of the pruner during use START LEVER The start lever opens and closes the choke valve in the carburetor STARTER GRIP The starter grip is used for starting the engine THROTTLE TRIGGER The throttle trigger is used for starting the pruner and also for controlling blade rotation ASSEMBLY PACKING LIST Power Head Assembly Pruner A...

Page 9: ...SHER HEX NUT LONG BOLT CLAMP SHORT BOLT J BARRIER HANDLE n Pull apart the ends of the bracket to expand slightly n Slide the bracket over the power head shaft immediately behind the J Barrier Handle n Squeeze bracket ends together to retighten n Reinstall the bolt lock washer and hex nut to secure n Connect the latch on the shoulder harness to the strap hanger NOTE Forproperbalance usethestraphang...

Page 10: ...r to replacing the fuel cap clean and inspect the gasket n Immediately replace fuel cap and hand tighten Wipe up any fuel spillage NOTE It is normal for smoke to be emitted from a new engine after first use WARNING Always shut off engine before fueling Never add fuel to a machine with a running or hot engine Move at least 30 ft from refueling site before starting the engine Do not smoke INSTALLING...

Page 11: ...uipment check it periodically for tightness during use to avoid serious injury BASIC CUTTING PROCEDURE Follow the steps below to prevent damage to tree or shrub bark Do not use a back and forth sawing motion n Accelerate the engine to full throttle just before entering the cut by squeezing the throttle trigger Keep the engine at full throttle the entire time you are cutting n Make a shallow first ...

Page 12: ...G To avoid burns from hot surfaces never operate unit with the bottom of the engine above waist level Hold the trimmer with your right hand on the rear handle and your left hand on the front handle Keep a firm grip with both hands while in operation Trimmer should be held at a comfortable position with the rear handle about hip height 60 MAXIMUM OPERATION LIMBING AND PRUNING See Figures 8 9 This u...

Page 13: ...the string TO ADVANCE THE CUTTING LINE MANUALLY Push the spool retainer down while pulling on string s to manually advance the string CUTTING TIPS See Figure 11 n Avoid hot surfaces by always keeping the tool away from your body Proper operating position shown in figure 10 n Keep the trimmer tilted toward the area being cut this is the best cutting area n The curved shaft trimmer cuts when passing...

Page 14: ...tle trigger releases the start lever to the RUN position TO START A WARM ENGINE PULL the rope until the engine starts TO STOP THE ENGINE Press and hold the switch in the stop position until the engine stops OPERATION Fig 16 POSITION FOR STARTING See Figure 13 Lay the pruner on the ground and ensure that no objects or obstructions are in the immediate vicinity Make sure nothing can come in contact ...

Page 15: ...ly 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 17 18 WARNING To avoid possible serious injury never touch or adjust the chain while the motor is running The saw chain is very sharp always wear protective gloves when performing maintenance to the chain MAIN...

Page 16: ...sion adjustment CHAIN TENSIONING SCREW Fig 23 BAR NUT Fig 24 n Remove all slack from chain by turning the chain tension ing screw clockwise assuring that the chain seats into the bar groove during tensioning n Lift the tip of the bar up to check for sag Release the tip of the bar and turn the chain tensioning screw 1 2 turn clockwise Repeat this process until sag does not exist n Hold the tip of t...

Page 17: ...op the chain or contact a service dealer for ad justment and discontinue use until the repair is made Serious personal injury may result from the saw chain turning at idle MAINTENANCE CHAIN OILER See Figure 26 n Use Premium Bar and Chain Oil It is designed for chains and chain oilers and is formulated to perform over a wide temperature range with no dilution required n Remove the cap and carefully...

Page 18: ...od have service dealer sharpen chain CUTTING CORNER SIDE PLATE DEPTH GAUGE TOE GULLET HEEL RIVET HOLE TOP PLATE PARTS OF A CUTTER Fig 28 DEPTH GAUGE SETTING Fig 27 HOW TO SHARPEN THE CUTTERS See Figures 28 31 Be careful to file all cutters to the specified angles and to the same length as fast cutting can be obtained only when all cutters are uniform n Use a 5 32 in diameter round file and holder ...

Page 19: ... other on the new spool Make sure the ends of each string are extended approximately 6 in beyond each slot n Thread the strings into the eyelets in the string head Carefully push the spool into the string head gently pull the strings to the outside if necessary When the spool is positioned in the string head grasp the strings and pull sharply to release them from the slots in the spool n Pushdowna...

Page 20: ...Insert the first string into the anchor hole in the upper part of the spool Wind the first string around the upper part of the spool counterclockwise as shown by the arrows on the spool Place string in the slot on upper spool flange leaving about 6 in extended beyond the slot Do not overfill After winding the string there should be at least 1 4 in between the wound string and the outside edge of t...

Page 21: ...push the cover up until it latches securely in place FUEL CAP WARNING A leaking fuel cap is a fire hazard and must be replaced immediately The fuel cap contains a non serviceable filter and a check valve A clogged fuel filter will cause poor engine perfor mance If performance improves when the fuel cap is loos ened check valve may be faulty or filter clogged Replace fuel cap if required SPARK PLUG...

Page 22: ...o Replacing and Cleaning Air Filter earlier in this manual Contact a servicing dealer Engine starts runs and accelerates but will not idle Idle speed screw on carburetor Turn idle speed screw clockwise to increase idle speed Bar and chain running hot and smoking Check chain tension for overtight condition Chain oil tank empty Tension chain Refer to Chain Tension earlier in this manual Check oil ta...

Page 23: ... 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 INCOMPATIBLE WITH THE RYOBITECHNOLOGIES INC productoradverselyaffect its operation performance or durability In addition this warranty does not cover A Tune ups Spark Plugs Carburetor Carburetor Adjustm...

Page 24: ...ot to exceed 30 days If you have any questions regarding your warranty rights and responsibilities you should contact a Ryobi Technologies Inc Customer Representative at 1 800 860 4050 COVERAGE Ryobi Technologies Inc warrants to the ultimate purchaser and each subsequent purchaser that your non road or small off road engine will be designed built and equipped at the time of sale to meet all applic...

Page 25: ...k 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 WITH A CATALYST MUFFLER Congratulations You have made an investment toward protecting the environment In order to maintain this product s original emission level please refer to the maintenance section below 1 ...

Page 26: ...t for repair parts or service simply contact your nearest Ryobi Authorized Service Center Be sure to provide all pertinent facts when you call or visit 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 SERIAL NO The model number of this tool will be found o...

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