Page 2 - THANK YOU; INTRODUCTION; SERVICE INFORMATION; DO NOT RETURN UNIT TO RETAILER.; California Proposition 65 Warning:
2 I. California Emission Regulations ................................3 II. Safety Warnings ......................................................3-6A. Safety Warnings for Brush Blade ..........................4B. Safety and International Symbols ......................5-6 III. Assembly Instructions ....
Page 3 - FUEL AND PRE-OPERATIONAL
3 CALIFORNIA EMISSION REGULATIONS The engine of your lawn and garden care productmeets the 1995 California emissions regulations. To ensure that your unit continues to meet theseregulations, refer to the following information andinstructions in this operator's manual. These units are identified by t...
Page 4 - SAFETY WARNINGS
4 SAFETY WARNINGS OPERATIONAL • Wear safety glasses/goggles at all times when operating this trimmer. • Dress properly. Do not operate this trimmer when barefoot or wearing open sandals. Always wear sturdy,rubber-soled footwear. The use of gloves, ear/hearingprotection and long pants are recommended...
Page 5 - WEAR EYE AND HEARING PROTECTION.; OFF OR STOP; SIGNIFICATION
5 SAFETY WARNINGS (Continued) • SAFETY ALERT SYMBOL. Indicates caution, warning or danger. May beused in conjunction with other symbols or pic-tographs. • READ OPERATOR'S MANUAL. Failure to follow operating instructions and safe-ty precautions in operator's manual can result inserious injury. Read o...
Page 6 - PARTIAL CHOKE position.; BRUSHCUTTERS –
6 SIGNIFICATION SYMBOL SAFETY WARNINGS (Continued) • PRIMER BULB. Push primer bulb, fully and slowly, 5 to 7 times. • CHOKE CONTROL. FULL CHOKE position. • CHOKE CONTROL. PARTIAL CHOKE position. • CHOKE CONTROL. RUN position. • THROWN OBJECTS AND ROTATING CUTTER CAN CAUSE SEVERE INJURY. Warning. Do ...
Page 7 - ASSEMBLY INSTRUCTIONS; Handle; INSTALLING THE SHOULDER STRAP; Handle Position as Shipped
7 ASSEMBLY INSTRUCTIONS The J-handle is shipped completely assembled on Model990r (Fig. 1). Use the following instructions to adjust the J-handle to the correct operating position. 1. Loosen the four (4) mounting screws on the J-handle. It is not necessary to remove the screws. 2. Slide the J-handle...
Page 8 - INSTALLING THE BRUSH BLADE
8 INSTALLING THE BRUSH BLADE 1. Remove the line guard. 2. Insert the locking rod into the locking rod slot. Rotate the line spool clockwise . Remove the line spool and retainer washer from the shaft (Fig. 6). 3. Make sure that you have all of the parts necessary to install the brush blade (Fig. 7). ...
Page 9 - WARNING; Blade Locating; INSTALLING THE LINE SPOOL; clockwise
WARNING Make sure the blade is flat against the washer after the lock nut is tightened. If the blade is off-center, the trimmer will be damaged byvibration, and the blade may fly off. Failure toobey this warning may cause injury to yourselfor others. 9 6. When assembling the brush blade, the blade e...
Page 11 - OIL & FUEL INFORMATION; CHECKING THE OIL; BEFORE EACH USE; THIS ENGINE IS CERTIFIED TO OPERATE ON UNLEADED GAS ONLY.; void; RECOMMENDED OIL TYPE; SAE 30 weight oil of API (American; Funnel Spout
11 OIL & FUEL INFORMATION 4. Reinstall oil fill plug / dipstick into the crankcase. NOTE: Save the bottle and funnel spout forfuture use. CHECKING THE OIL The importance of checking and maintaining the proper oillevel in the crankcase cannot be overemphasized. Checkthe oil BEFORE EACH USE as fol...
Page 12 - Add Oil
12 RECOMMENDED FUEL TYPE WARNING Fuel is extremely flammable and its vapors canexplode if they are ignited. Always stop theengine and allow it to cool before filling the fueltank. Do not smoke while filling the tank. Keepsparks and open flames away from the area. Fill the fuel tank, using clean, fre...
Page 13 - STARTING/STOPPING INSTRUCTIONS; Throttle Trigger
13 1. CHECK THE OIL LEVEL IN THECRANKCASE, AND PUT THE IGNITIONSWITCH IN THE "RUN" (I) POSITION. See Figure 20 for the location of the ignition switch . 2. FULLY PRESS AND RELEASE THE PRIMERBULB 5 TO 7 TIMES. See Fig. 21 for the primer bulb location. 3. PLACE THE CHOKE LEVER IN THE FULL“CHOK...
Page 14 - OPERATING INSTRUCTIONS; high speed
1. Always maintain the proper stance when using the brush blade (Fig. 25). Sharpening the Brush Blade WARNING Do not sharpen the brush blade. Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury to yourself or others. The brush blade is de...
Page 16 - Bump Knob; MAINTENANCE AND REPAIR INSTRUCTIONS (Continued); LINE INSTALLATION; REWINDING THE EXISTING REEL; The; Removing the Existing Reel; Inner Reel
16 Bump Knob MAINTENANCE AND REPAIR INSTRUCTIONS (Continued) LINE INSTALLATION The trimming line may be replaced by two different meth-ods - rewinding the existing reel or installing a prewoundreel. REWINDING THE EXISTING REEL To rewind the existing reel you must: 1. Check for the correct line size....
Page 17 - Reinstalling the Reel; counterclockwise; INSTALLING A PREWOUND REEL; THE CORRECT LINE TO; Winding the Existing Reel
17 Reinstalling the Reel 1. Insert the ends of the line through the eyelets in the outer spool (Fig. 33). Place the inner reel into the outerspool. Grasp the ends and pull firmly to release theline from the holding slots in the spool. NOTE: The spring must be in the center of theouter spool. 2. Inst...
Page 18 - GEAR HOUSING SERVICE; every 50 hours; Fill Plug
18 MAINTENANCE AND REPAIR INSTRUCTIONS (Continued) GEAR HOUSING SERVICE WARNING The gear housing gets very warm after long peri-ods of use. Do not touch the housing until it hascooled. 1. Check the gear housing for lubricant every 50 hours of operation. 2. To check the lubricant level, remove the fi...
Page 19 - AIR FILTER MAINTENANCE; without; Air Filter; Choke Lever; Screw
19 NOTE: CLEAN AND RE-OIL THE AIR FILTEREVERY 10 HOURS OF OPERATION . Your unit’s air filter is one of the mostimportant areas to maintain. If it is notmaintained, you will void the warranty. Before cleaning, make sure the unit isturned off. 1. Remove the three (3) screws on the carburetor/air filte...
Page 20 - Adjusting the Carburetor
20 MAINTENANCE AND REPAIR INSTRUCTIONS (Continued) 4. Start the engine and let it run for three (3) to five (5) minutes with the throttle trigger fully squeezed. 5. Release the throttle trigger and let the engine idle. If the engine stops, turn the idle speed screw (Fig. 40) n (clockwise) 1/8 turn a...
Page 21 - Rich; CARBURETOR ADJUSTMENT; every 25 hours of opera-; Removing Muffler; Final Idle Speed Adjustment:
21 MAINTENANCE AND REPAIR INSTRUCTIONS (Continued) Rich Lean Adjust to Midpoint NOTE: If the carburetor adjustments do not helpthe unit to run properly, contact yourauthorized service dealer. NOTE: If the limiter caps are removed at anytime, your unit will no longer meetthe1995 California emission r...
Page 22 - Inspection and Cleaning; Muffler Reassembly
22 Inspection and Cleaning Inspect the inlet port of the muffler and outlet port of thecylinder for excessive carbon build-up. Excessive depositsaround the exhaust ports or exhaust holes will cause poorengine performance. If carbon build-up cannot be cleaned, replace the muffler. Inspect the muffler...
Page 23 - CHECKING / ADJUSTING VALVE TO; Every 50 hours of operation; REPLACING THE SPARK PLUG; every 50 hours of
23 MAINTENANCE AND REPAIR INSTRUCTIONS (Continued) CHECKING / ADJUSTING VALVE TO ROCKER ARM CLEARANCE Every 50 hours of operation , remove the rocker arm cover and check the valve to rocker arm clearance, usinga flat feeler gauge . NOTE: The engine must be cold when checkingor adjusting the clearanc...
Page 25 - CLEANING AND STORAGE; Cleaning; SPECIFICATIONS; ENGINE
25 CLEANING AND STORAGE 3. Drain the oil from the crankcase and add fresh oil. Pull the starter rope a few times to lubricate the engine. 4. Thoroughly clean the unit and inspect for any loose or damaged parts. Repair or replace damaged parts andtighten loose screws, nuts or bolts. The unit is now r...
Page 26 - TROUBLESHOOTING; PROBLEM
26 TROUBLESHOOTING PROBLEM CAUSE ACTION Engine Is Difficult to Ignition switch is “STOP (O)" Turn switch to “RUN (I)” Start or Will Not Start Primer bulb wasn’t pushed enough Press primer bulb fully and slowly 5-7 times Engine is not choked Use starting procedure, USING "FULL" CHOKE"...
Page 27 - CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT; YOUR WARRANTY RIGHTS AND OBLIGATIONS
27 CALIFORNIA EMISSION CONTROL WARRANTY STATEMENT YOUR WARRANTY RIGHTS AND OBLIGATIONS The California Air Resources Board and Ryobi Outdoor Products (ROP), are pleased to explain the emission control system warranty on your 1995 and later lawn and garden equipment engine. In California, new lawn and...
Page 28 - Limited Two-Year Warranty
28 Limited Two-Year Warranty RYOBI AMERICA CORP. warrants each new RYOBI Product for two (2) years accord-ing to the following terms. This warranty extends to the original retail purchaser only and commences on thedate of original retail purchase. Any part of the RYOBI Product manufactured or suppli...
