n n mm m mum Operator's Manual 2 - Cycle Gasoline Brushcutter Model IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS P/N 769-00662 (3/03) PRINTED IN USA TB90BC CAREFULLY
Content Page Calling Customer Support ..................................................... Rules for Safe Operation ..................................................... Z,now Your Unit ........................................................... 3 7 Assembly Instructions ....................................................... Oil and Fuel Information ..................................................... 8 11 Starting/Stopping Instructions ............................................
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 SYMBOL _;L will result inFailure seriousto injury yourself or to DANGER: 0bey to a safetywaming others.
WHILE OPERATING • Never start or run the unit inside a closed room or building. Breathing exhaust fumes can be fatal. Operate this unit only in a well-ventilated outdoor area. • Wear safety glasses or goggles that meet ANSI Z87.1 standards and are marked as such. Wear ear/hearing protection when operating this unit. Wear a face or dust mask if the operation is dusty. • Wear heavy long pants, boots, gloves and a long sleeve shirt. Do not wear loose clothing, jewelry, short pants, sandals or go barefoot.
• Do not run the unit at high speed when not cutting. • if you strike or become entangled with a foreign object, stop the engine immediately and check for damage. Have any damage repaired before attempting further operations. Do not operate unit with a bent, cracked or dull blade. Discard blades that are bent, warped, cracked or broken. • Do not sharpen the cutting blade. Sharpening the blade can cause the blade tip to break off while in use. This can result in severe personal injury. Replace the blade.
SAFETY AND INTERNATIONAL SYMBOLS This operator's manual describes safety and international symbols and pictographs that may appear On this product. Read the operator's manual for complete safety, assembly, operating and maintenance and repair information. SYMBOL MEANING SYMBOL MEANING • ON/OFF Indicates danger, warning or caution. • SAFETY SYMBOL May be usedALERT in conjunction with other symbols or pictographs.
APPLICATIONS Fuel Cap As a trimmer: \\\\ • Cutting grass and light weeds \\ • Edging • Decorative trimming around trees, fences, etc. As a brushcutter: • Cutting weeds and light brush of up to 1/2 inch in diameter Other optional accessories may be used with the TB90BC. Refer to Operating the EZ-Link System for a list of add-ons. Starter Rope Grip Shaft Grip -_ Throttle Lock-Out Throttle Control Shoulder Strap Clip EZ.Start Lever EZ.
On some units, the J-handle may be pre-installed. In this case you must loosen screws and adjust the handle to fit the operator. Go to step 5 if the J-handle is pre-installed. INSTALL AND ADJUST 1. INSTALL (4) Top Clamp J-Handle HARNESS WARNING: Always use the shoulder harness when using the cutting blade to avo d serous persona njury. J THE J-HANDLE Place the J-handle between the top and middle clamp pieces (Fig. 1). THE 1. Push the strap through the center of the buckle. 2.
Cutting Attachment Shield 2. Hold the locking rod in place by grasping it next to the boom of the unit (Fig. 9). 3. While holding the locking rod, remove the cutting attachment by turning it clockwise off of the output shaft (Fig. 10). Store the cutting attachment for future use. Screws Gear Housing NOTE: The blade retainer under the cutting attachment will be used when installing the cutting blade. Shield Fig. 7 Install the cutting attachment the unit as a grass trimmer shield when using Fig.
REMOVE THE CUTTING INSTALL THE CUTTING 5. Make sure that the cutting blade is centered on the pilot step and sitting f!at against the output shaft bushing (Fig. 12), Allk I _III_ I center, the unit will vibrate and the blade I may fly off, causing possible serious WARNING: If the Cutting blade is off- I I personal injury. I Allk l_ I Pilot Step Remove the Cutting Blade Align the shaft bushing hole with the locking rod slot and insert the locking rod into the bushing hole (Fig. 8). 2.
OIL AND FUEL MIXING INSTRUCTIONS Old and/or improperly mixed fuel are the main reasons for the unit not running properly. Be sure to use fresh, clean unleaded fuel. Follow the instructions carefully for the proper fuel/oil mixture. Definition of Blended Fuels Today's fuels are often a blend of gasoline and oxygenates such as ethanol, methanol, or MTBE (ether). Alcohol-blended fuel absorbs water. As little as 1% water in the fuel can make fuel and oil separate. It forms acids when stored.
I _ ] ventilated outdoor area. Carbon monoxide exhaust WARNING_ unit only in a well_ fumes can beOperate lethal in thisa confined area. WARNING: Avoid accidental starting. Make you are in the starting position when pulling starter rope (Fig. 18). To avoid serious injury, operator and unit must be in a stable position Start/On (I) sure the the while Throttle Control To avoid serious personal injury, ensure any Add-On being used is installed correctly and secure before starting the unit.
OPERATING The EZ-Link Add-Ons: THE EZ-LINK TM Blower/Vacuum Cultivator TM SYSTEM 2. system enables the use of these optional ........................... NOTE: Aligning the release button with the guide recess will help installation (Fig. 19). TBBV ................................ While firmly holding the add-on, push it straight into the EZ-Link TM coupler (Fig. 20). TBGC Edger ................................... Release Button TBLE Hedge Trimmer ........................... Snow Thrower .....
HOLDING THE TRIMMER and body protection to reduce the tisk of _[WARNING: Always wear eye, hearing, foot njury when operat ng this un t. Before operating the unit, stand in the operating position (Fig. 22).
DECORATIVE TRIMMING Decorative trimming is accomplished by removing all vegetation around trees, posts, fences and more. Rotate the whole unit so that the cutting attachment is at a 30 ° angle to the ground (Fig. 24). _ theARNING: engine isThe turned off.Continues The coasting blade blade to Spin after can seriously cut you if accidentally touched. I • Swing the unit in the opposite direction as the blade spins, which increases the cutting action.
MAINTENANCE SCHEDULE NOTE: Maintenance, replacement, or repair of the emission control devices and system may be performed by any non-road engine repair establishment, individual or authorized service dealer. Perform these required maintenance procedures at the frequency stated in the table. These procedures should also be a part of any seasonal tune-up. NOTE: Some maintenance procedures may require special tools or skills.
For Use with SplitLineTM or Single Line For Use with Single Line ONLY _ Slotted Holes 9. Insert the end of the line into the open hole in the inner reel and pull the line tight to make the loop as small as possible (Fig. 33). 10. Before winding, split the line back about 6 inches. 11. Wind the line in tight even layers in the direction indicated on the inner reel. NOTE: Failure to wind the line in the direction indicated will cause the cutting attachment to operate incorrectly. / Fig.
INSTALLING A PREWOUND REEL 1. Hold the outer spool with one hand and unscrew the bump knob clockwise (Fig. 27). Inspect the bolt inside the bump knob to make sure it moves freely. Replace the bump knob if damaged. 2. Remove the old inner reel from the outer spool (Fig. 27). 3. Remove the spring from the old inner reel (Fig. 27). 4. Place the spring in the new inner reel. Cleaning the Air Filter Clean and re-oil the air filter every 10 hours of operation. It is an important item to maintain.
Reinstalling the Air Filter/Muffler Cover 1. Place the air filter/muffler cover over the back of the carburetor and muffler. Align the screw holes. 2. Spark Arrestor Insert the four (4) screws into the holes in the air filter/muffler cover (Fig. 36) and tighten. Do not over tighten. SPARK ARRESTOR \ MAINTENANCE 1. Remove air filter/muffler cover. Refer to Removing the Air Filter/Muffler Cover. 2. Locate muffler front and the two (2) bolts securing it to the engine (Fig. 41).
CARBURETOR ADJUSTMENT The idle speed of the engine is adjustable through the air filter/muffler cover (Fig. 43). NOTE: Careless adjustments can seriously damage your unit. An authorized service dealer should make carburetor adjustments. Check Fuel Mixture Old and/or improperly mixed fuel is usually the reason for improper unit performance. Drain and refill the tank with flesh properly-mixed fuel pnor to making any adJustments. Refer to Oil and Fuel Information.
CLEANING _1_ "_, [_[COO i TRANSPORTING WARNING: TO avoid serious personal injury, I I always turn your trimmer off and allow it tO I before you c ean or serv ce t. [ i 1 Use a small brush to clean off the outside of the unit. Do not use strong detergents. Household cleaners that contain aromatic oils such as pine and lemon, and solvents such as kerosene, can damage plastic housing or handle. Wipe off any moisture with a soft cloth. STORAGE • Allow the engine to cool before transporting.
CAUSE ACTION Empty fuel tank Fill fuel tank with properly mixed fuel Primer bulb wasn't pressed enough Press primer bulb fully and slowly 10 times Engine is flooded Squeeze the trigger and pull the starter rope Old or improperly mixed fuel Drain gas tank and add fresh fuel mixture Fouled spark plug Replace or clean the spark plug Plugged spark arrestor Clean or replace spark arrestor EZ-Start lever wasn't flipped/set Move lever to the starting position ! | CAUSE ACTION Air filter is plug
Engine Type ........................................................................................................................................... Air-Cooled, 2-Cycle Stroke ..................................................................................................................................................... 1.25 in. (31.75 mm) Displacement .............................................................................................................................................. 1.
EPA Emission Control Warranty Statement Your Warranty Rights and Obligations The Environmental Protection Agency and Troy-Bilt LLC (Troy-Bilt) are pleased to explain the emission control system warranty on your 2002 and later small off-road engine. New small off-road engines must be designed, built and equipped to meet stringent anti-smog standards.
ENGINE PARTS - MODEL TB90bc 2-CYCLE GAS TRIMMER/BRUSHCUTTER / @ Item I E26 Part No.
® Item Part NO.
TROKBILT n n mII The limited warranty set forth below is given by Troy-Bilt LLC with respect to new merchandise purchasedand used in the United States, its possessions and territories. Troy-Bilt LLC warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in material or workmanship.
