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CALIFORNIA EMISSION REGULATIONS 

DANGER:

Failure to obey a safety

warning will result in serious injury 
to yourself or to others. Always
follow the safety precautions to
reduce the risk of fire, electric 
shock, and personal injury. 

WARNING:

Failure to obey a safety

warning can result in serious injury
to yourself or to others.

CAUTION:

Failure to obey a safety

warning may result in property
damage or personal injury to
yourself or to others. 

NOTE: 

Advises you of information or
instructions vital to the operation or
maintenance of the equipment.

SAFETY ALERT SYMBOL:

Indicates

danger, warning, or caution. Special
attention is required in order to avoid
serious personal injury. May be used
in conjunction with other symbols or
pictographs. 

The purpose of safety symbols is to
attract your attention to possible
dangers. The safety symbols, and their
explanations, deserve your careful
attention and understanding. The safety
warnings do not by themselves eliminate
any danger. The instructions or warnings
they give are not substitutes for proper
accident prevention measures.

SYMBOL

MEANING

SPARK ARRESTOR

NOTE: For users on U.S. Forest Land and in the states of California, Maine, Oregon and
Washington.

All U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443),

Oregon and Washington require, by law that certain internal combustion engines operated on forest
brush and/or grass-covered areas be equipped with a spark arrestor, maintained in effective working
order, or the engine be constructed, equipped and maintained for the prevention of fire. Check with
your state or local authorities for regulations pertaining to these requirements. Failure to follow these
requirements could subject you to liability or a fine.

This unit is factory equipped with a spark

arrestor

. If it requires replacement, ask your 

LOCAL SERVICE

dealer to install the 

Accessory Part

#182153 Spark Arrestor Kit.

FOR QUESTIONS, CALL 1-800-345-8746 IN U.S. OR 1-800-265-6778 in CANADA

THE ENGINE EXHAUST FROM THIS

PRODUCT CONTAINS CHEMICALS

KNOWN TO THE STATE OF CALIFORNIA

TO CAUSE CANCER, BIRTH DEFECTS

OR OTHER REPRODUCTIVE HARM.

WARNING

California Proposition 65 Warning:

RULES FOR SAFE OPERATION

This unit meets the 1995 to 1998 California emissions regulations for small off-road engines. These
units are identified by the label on the engine of your product. A typical identification label is shown.

To ensure that your unit continues to meet these regulations, refer to the following information and
instructions in this operator’s manual.

Содержание 1090r

Страница 1: ...FOR QUESTIONS CALL 1 800 345 8746 in U S or 1 800 265 6778 in CANADA www ryobi com IMPORTANT MANUAL DO NOT THROW AWAY OPERATOR S MANUAL 4 Cycle Gas Trimmer Brushcutter 1090r...

Страница 2: ...Instructions 15 17 A Operating Click Link System 15 B Adjusting Trimming Line Length 16 C Decorative Trimming 16 D Edging 16 E Using the Cutting Blade 16 VII Maintenance and Repair Instructions 17 23...

Страница 3: ...a Maine Oregon and Washington All U S Forest Land and the state of California Public Resources Codes 4442 and 4443 Oregon and Washington require by law that certain internal combustion engines operate...

Страница 4: ...ry when the engine is idling If it does not have the unit adjusted by an authorized service technician Adjust the J handle to your size to provide the best grip READ ALL INSTRUCTIONS BEFORE OPERATING...

Страница 5: ...g attachment and shield To reduce fire hazard replace faulty muffler and spark arrestor keep the engine and muffler free from grass leaves excessive grease or carbon build up WHILE OPERATING WITH CUTT...

Страница 6: ...owly 5 to 7 times KEEP BYSTANDERS AWAY WARNING Keep all bystanders especially children and pets at least 50 feet 15 m away from the trimming area UNLEADED FUEL Always use clean fresh unleaded fuel AFT...

Страница 7: ...CONTROL A START position B RUN position INDICATES OIL Refer to operator s manual for the proper type of oil SHARP BLADE WARNING Sharp blade on string guard To prevent serious injury do not touch line...

Страница 8: ...s and weeds Also for decorative trimming around trees fences etc Use the 4 tooth brush blade for weeds and light brush of up to 1 2 inch in diameter Other attachments may be used with this unit See th...

Страница 9: ...he unit in the operating position Fig 2 adjust rotate the handle forward and back to a position that provides you the best grip 4 Tighten the mounting screws Fig 1 Fig 3 Fig 2 INSTALLING THE HARNESS W...

Страница 10: ...unt by removing the three 3 screws with a flat blade screwdriver Fig 6 Store parts for future use 4 Remove the nut blade retainer and blade Store the nut and blade together for future use in a secure...

Страница 11: ...s hot with use and can result in injury to the operator When the unit is turned off it remains hot for a short time Do not touch the gear housing until it has cooled 1 Align the shaft bushing hole wit...

Страница 12: ...e unit do not start or operate this unit with the locking rod in the locking rod slot 10 Remove the cutting blade cover by un snapping the plastic lock on the cover and pulling it from the blade Store...

Страница 13: ...before storing the unit USE OF FUEL ADDITIVES The use of fuel additive such as STA BIL Gas Stabilizer or an equivalent will inhibit corrosion and minimize the formation of gum deposits Add 0 8 oz 23 m...

Страница 14: ...nit in the starting position squeeze the throttle control and pull the starter rope briskly until the engine sounds like it wants to run normally 2 to 5 pulls Fig 20 7 Place the choke lever in the RUN...

Страница 15: ...nts to be installed on the unit The optional attachments are Blower Vacuum BV720r Cultivator GC720r Edger LE720r Hedge Trimmer HS720r Snow Thrower ST720r Straight Shaft Trimmer SS725r Sweeper Blower S...

Страница 16: ...g all vegetation around trees posts fences etc Rotate the entire unit so that the cutting head is at a 30 angle to the ground Fig 25 ADJUSTING TRIMMING LINE LENGTH Your unit is equipped with a string...

Страница 17: ...ext area to be cut after the return swing and plant feet again The brush blade is designed with a second set of teeth which can be used by removing the blade turning it upside down and reinstalling it...

Страница 18: ...u use a larger line Removing the Existing Reel 1 Hold the outer spool with one hand and unscrew the Bump Knob clockwise Fig 28 Inspect the captured bolt inside the Bump Knob to make sure it moves free...

Страница 19: ...3 Reinstalling the Reel 1 Insert the ends of the line through the eyelets in the outer spool and place inner reel inside the outer spool Fig 34 Then grasp the ends and pull firmly to release the line...

Страница 20: ...out and up Fig 35 3 Remove the air filter Fig 35 Fig 37 Fig 38 Fig 39 5 Apply enough clean SAE 30 motor oil to lightly coat the filter Fig 37 6 Squeeze the filter to spread and remove excess oil Fig...

Страница 21: ...ise 1 2 turn until the engine stabilizes Fig 40 4 If the cutting head keeps rotating after the trigger is released turn the idle speed screw counterclockwise 1 2 turn until the head stops rotating Fig...

Страница 22: ...te and local regulations 4 Refill the crankcase with 3 4 fluid oz 100 ml of SAE 30 SF SG SH oil Use the bottle and spout from initial use 5 Reinstall the oil fill plug dipstick NOTE Make sure the O ri...

Страница 23: ...in lb 11 3 12 3 N m Reinstall the spark plug wire 3 Disconnect the spark plug wire 4 Remove the spark plug and then remove the engine cover 5 Remove the rocker arm cover and gasket Fig 46 6 While look...

Страница 24: ...nsures that all fuel has been drained from the carburetor 3 Allow the engine to cool Remove the spark plug and put approximately 1 oz 30 ml of any high quality motor oil or 4 cycle oil into the cylind...

Страница 25: ...tarting procedure WITHOUT choke lever in the START position Drain fuel tank Add fresh fuel Replace or clean spark plug Replace or clean air filter Drain fuel tank Add fresh fuel Drain fuel tank Add fr...

Страница 26: ...e Diameter 0 095 inches 2 41 mm Cutting Path Diameter 18 inches 44 0 cm Gear Box Ratio 1 23 1 ENGINE Engine Type Air Cooled 4 Cycle Displacement 1 6 cu in 26 2 cc Clutch Type Centrifugal Operating RPM...

Страница 27: ...he engine or equipment is delivered to the retail purchaser The manufacturer warrants to the initial owner and each subsequent purchaser that the engine is free from defects in material and workmanshi...

Страница 28: ...tion this warranty does not cover A Tune ups Spark Plugs Carburetor Adjustments Filters B Wear items Bump Knobs Outer Spools Cutting Line Inner Reels Starter Pulley Starter Ropes Drive Belts RYOBI res...

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