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RYOBI OUTDOOR PRODUCTS warrants each new
RYOBI Product for two (2) years according to the
following terms.

This warranty extends to the original retail purchaser
only and commences on the date of original retail
purchase.

Any part of the RYOBI Product manufactured or
supplied by RYOBI and found in the reasonable
judgement of RYOBI to be defective in material or
workmanship will be repaired or replaced by an
authorized RYOBI service dealer without charge 
for parts and labor.

The RYOBI Product including any defective part 
must be returned to an authorized service dealer
within the warranty period. The expense of delivering
the RYOBI Product to the dealer for warranty work
and the expense of returning it back to the owner
after repair or replacement will be paid for by the
owner. RYOBI’s responsibility in respect to claims is
limited to making the required repairs or replacements
and no claim of breach of warranty shall be cause 
for cancellation or rescission of the contract of sale 
of any RYOBI Product. Proof of purchase will be
required by the dealer to substantiate any warranty
claim. All warranty work must be performed by an 
authorized RYOBI service dealer.

This warranty is limited to ninety (90) days from 
the date of original retail purchase for any RYOBI
Product that is used for rental or commercial
purposes, or any other income-producing purpose.

This warranty does not cover any RYOBI Product 
that has been subject to misuse, neglect, negligence,
or accident, or that has been operated in any way
contrary to the operating instructions as specified in
the RYOBI Operator’s Manual. This warranty does not
apply to any damage to the RYOBI Product that is the
result of improper maintenance or to any RYOBI
Product that has been altered or modified so as to
adversely affect the product's operation, performance
or durability or that has been altered or modified so
as to change its intended use. 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 RYOBI Product or adversely
affect its operation, performance or durability.

In addition, 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 reserves the right to change or improve the
design of any RYOBI Product without assuming any
obligation to modify any product previously
manufactured.

ALL IMPLIED WARRANTIES ARE LIMITED IN
DURATION TO THE TWO (2) YEAR WARRANTY
PERIOD OR NINETY (90) DAYS FOR PRODUCTS
USED FOR ANY COMMERCIAL PURPOSE.
ACCORDINGLY, ANY SUCH IMPLIED
WARRANTIES INCLUDING MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR
OTHERWISE, ARE DISCLAIMED IN THEIR
ENTIRETY AFTER THE EXPIRATION OF THE
APPROPRIATE TWO-YEAR OR NINETY DAY
WARRANTY PERIOD. RYOBI’S OBLIGATION
UNDER THIS WARRANTY, IS STRICTLY AND
EXCLUSIVELY LIMITED TO THE REPAIR OR
REPLACEMENT OF DEFECTIVE PARTS, AND
ROP DOES NOT ASSUME OR AUTHORIZE
ANYONE TO ASSUME FOR THEM ANY OTHER
OBLIGATION. SOME STATES DO NOT ALLOW
LIMITATIONS ON HOW LONG AN IMPLIED
WARRANTY LASTS, SO THE ABOVE LIMITATION
MAY NOT APPLY TO YOU.

RYOBI ASSUMES NO RESPONSIBILITY FOR
INCIDENTAL, CONSEQUENTIAL OR OTHER
DAMAGES INCLUDING, BUT NOT LIMITED
TO EXPENSE OF RETURNING THE RYOBI
PRODUCT TO AN AUTHORIZED SERVICE
DEALER AND EXPENSE OF DELIVERING IT BACK
TO THE OWNER, MECHANIC’S TRAVEL TIME,
TELEPHONE OR TELEGRAM CHARGES, RENTAL
OF A LIKE PRODUCT DURING THE TIME
WARRANTY SERVICE IS BEING PERFORMED,
TRAVEL, LOSS OR DAMAGE TO PERSONAL
PROPERTY, LOSS OF REVENUE, LOSS OF USE
OF THE PRODUCT, LOSS OF TIME, OR
INCONVENIENCE. 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.

This warranty gives you specific legal rights, and
you may also have other rights which vary from
state to state.

This warranty applies to all RYOBI Products
manufactured by RYOBI and sold in the United
States and Canada.

To locate your nearest service dealer dial
1-800-345-8746 in the United States or
1-800-265-6778 in Canada.

RYOBI OUTDOOR PRODUCTS

550 N. 54th Street

Chandler, AZ 85226 U.S.A.

RYOBI CANADA INC.

275 Industrial Rd

Cambridge, Ontario N1R 6K2 CANADA

LIMITED TWO-YEAR WARRANTY

SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

FOR QUESTIONS CALL 1-800-345-8746 IN U.S.

OR 1-800-265-6778 IN CANADA

OPERATOR’S MANUAL PART NO. 182005

REV. A (7619)

PRINTED IN U.S.A.

9/98

Summary of Contents for 1090r

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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