FORM NO. 3321–133 ProLine String Trimmer Model No. 53002 — 8900001 & Up Model No. 53003 — 8900001 & Up Model No. 53010 — 8900001 & Up Model No. 53011 — 8900001 & Up 16” & 18” Gas Modèle No. 51903 — 790000001 et suivants Modèle No. 51904 — 790000001 et suivants Modèle No. 51906 — 790000001 et suivants Modèle No. 51907 — 790000001 et suivants 16” & 18” Gas Modelos N. 51903 — 790000001 y siguientes Modelos N. 51904 — 790000001 y siguientes Modelos N. 51906 — 790000001 y siguientes Modelos N.
WARNING: The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
Figures 1 3 9. Model and Serial Number Decal (on rear of engine stand) 10. Air Filter 11. Trimmer Head Shield 12. Throttle Trigger and Stop Switch 13. Throttle Cable and Stop Switch Wire 14. Fuel Tank 1. 2. 3. 4. 5. Trimmer Head Gearcase Shaft Assembly Loop Handle Attachment Ring for Shoulder Harness 6. Shaft Grip 7. Clutch Drum Housing 8. Engine 1. 50 ft. (15 m) Minimum 4 2 1.
5 1. Engine 2. M5 x 20 (4) 7 m-2967 3. Shaft 4. Clutch Drum Housing 6 m-2971 8 1. Loop Handle 2. Screw (4) 3. Rubber Sleeve ii 4. Bottom Clamp 5. Nut (4) m-2970 1. Shaft Grip 2. Plastic Tube m-2972 3. Stop Switch Wires 4.
9 11 1. Cable Adjuster Sleeve 2. Carburetor Throttle Cam 3. Throttle Stop/Idle Speed Adjuster Screw Bracket m-3041 1. Air Cleaner Cover 2. Cylinder Cover 10 4. Idle Speed Adjuster Screw 5. Slotted Fitting 3. Knob 12 m-2973 1. 2. 3. 4. m-2974 Throttle Cable Housing Cable Adjuster Sleeve Locknut Throttle Cable 5. 6. 7. 8. Slotted Fitting Recessed Hole Cable Lug Carburetor Bracket 1. 2. 3. 4.
13 15 1 3 2 1 4 2 5 6 m-2976 1. Gearcase 2. 3mm Hex Wrench 3. Splined Shaft Model 53010 & 53011 4. Boss Adapter 5. Trimmer Head Adapter 6. Trimmer Head 1. Primer Bulb m-3040 2. Fuel Return Line 14 16 1 1 2 2 1 m-2938 Model 53002 & 53003 1. Primer Bulb iv 2. Fuel Return Line m-2978 1. Starter Handle 2.
17 19 m-2974 1. Idle Speed Adjustment Screw m-2939 1. Stop Switch 2. Fast-idle Lock 3. Throttle Trigger (in fast-idle start position) 4. Throttle Trigger (in idle position) 20 18 m-2968 m-2968 1. Throttle Trigger in Idle Position 2. No Trimmer Head Rotation 1. 2. 3. 4. Hearing Protection Eye Protection Right Arm Slightly Bent Left Arm Fully Extended, Hand Holding Loop Handle 5. Hand Holding Throttle Grip, Fingers on Throttle Trigger 6.
21 23 m-2979 1. Three inches (7.6 cm) Above Ground m-2981 1. Three inches (7.
1 26 28 1 2 ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ ÎÎÎÎÎÎ 3 4 2 5 m-2930 1. Air Filter Cover 2. Foam Filter 6 1 29 2 3 4" and 5" Head Assembly 1. Housing 2. Eyelet (2) 3. Spool (with Line) 4. Spring 5. Bump Knob 6. Spool Cover m-2997 1 27 1. Air Filter Cover 2. FIlter Screen 3. Foam Ring 2 1 30 3 3 2 1 4 5 6 4 6" Head Assembly 1. Housing 2. Eyelet (2) 3. Spring 4. Spool (with Line) 5. Bump Knob 6. Spool Cover m-3010 1. Filter Screen 2. Cutout (typical) 3. Air Filter Cover 4.
31 33 m-2931 1. Wire 2. Fuel Pick-up Hose 3. Fuel Filter m-2934 1. Screw 32 34 1. Muffler Cover viii 2. Cylinder Cover ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ ÎÎÎÎ m-2927 m-2932 2. Socket Head Screw 1. .024”–.028” (0.6–0.
35 37 1. Socket Head Screw (4) 2. Tail 3. Screen m-3002 m-3043 38 4. Gasket 5. Plate 6. Muffler 36 m-2991 1. Red Band 2. Strap 3. Ring m-3042 1. Socket Head Screw (2) 2. Tail 3. Gasket 4. Spark Arrester 5.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operator Safety . . . . . . . . . . . . . . . . . . . . . String Trimmer Safety . . . . . . . . . . . . . . . . Fuel Safety . . . . . . . . . . . . . . . . . . . . . . . . . Power String Trimmer Operating Safety . . Safety and Instruction Decals . . . . . . . . . . Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DANGER, WARNING and CAUTION are signal words used to identify the level of hazard. However, regardless of the hazard, be extremely careful. 4. Always wear heavy, long pants, boots and gloves. Do not wear loose clothing, jewelry, short pants, sandals, or go barefoot. Secure hair so it is above shoulder length. DANGER signals an extreme hazard that will cause serious injury or death if the recommended precautions are not followed. 5.
8. Maintain the String Trimmer according to the recommended maintenance intervals and procedures in the Maintenance section on page 12. 10. Store fuel and String Trimmer away from open flame, sparks and excessive heat. Make sure fuel vapors cannot reach sparks or open flames from water heaters, furnaces, electric motors, etc. 9. Shut off the engine and wait until the trimmer head has completely stopped moving before checking, performing maintenance on or working on the String Trimmer.
12. Use the right tool for the job. Do not use the Trimmer for any job that is not recommended by Toro. Safety and Instruction Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger. Replace any decal that is damaged or lost. ON SHAFT (Part No. M221501) ON SHAFT (Part No. M221502) ON ENGINE (Part No. M266291) Assembly Assembling Engine and Drive Shaft Assembly The drive shaft, clutch drum housing and gearcase are assembled.
3. Place the loop handle and the bottom clamp over the rubber sleeve (Fig. 6). 4. Install the four screws and nuts. Leave the screws finger-tight (Fig. 6). 5. Reposition the loop handle up or down the drive shaft to the most comfortable position, but no closer than 9 inches (22.8 cm) from the end of the stop switch (Figs. 6 and 7). 6. 2. Insert the throttle cable through the cable adjuster sleeve on the carburetor bracket.
POTENTIAL HAZARD • Foreign objects can be thrown by Trimmer. POTENTIAL HAZARD • If the trimmer head is not adequately tightened, it can come loose from the Trimmer during use. WHAT CAN HAPPEN • Contact with thrown objects can cause personal injury. WHAT CAN HAPPEN • This may cause damage to property or HOW TO AVOID THE HAZARD • Never operate the Trimmer without the trimmer head shield in place. personal injury.
2. Mix and pour fuel outdoors and where there are no sparks or flames. 3. Always shut off the engine before refueling. Never remove the String Trimmer fuel tank cap while the engine is running or right after just stopping the engine. POTENTIAL HAZARD • Gasoline contains gasses that can build up pressure inside a gas tank. WHAT CAN HAPPEN • Fuel can be sprayed on you when removing gas cap. HOW TO AVOID THE HAZARD • Remove fuel cap slowly to avoid injury from fuel spray. 4.
Mixing Gasoline And Oil Fuel Mixture Chart IMPORTANT: The engine used on this String Trimmer is of a 2–cycle design. The internal moving parts of the engine, i.e., crankshaft bearings, piston pin bearings and piston to cylinder wall contact surfaces, require oil mixed with the gasoline for lubrication. Failure to add oil to the gasoline or failure to mix oil with the gasoline at the appropriate ratio will cause major engine damage which will void your warranty. Gasoline 50:1 2-cycle oil 1 gallon 2.
Starting And Stopping B. Make sure the throttle trigger is set to the fast-idle start position (Fig. 17). Before Starting The Engine C. Pull the starter handle until the engine starts (Fig. 16). 1. Fill the fuel tank as instructed in the Before Operation section of this manual. 2. Rest the String Trimmer on the ground. 3. Make sure the trimmer head is clear of any broken glass, nails, wire, rocks or other debris. 4. Keep all bystanders, children and animals away from the working area.
Operation POTENTIAL HAZARD • Engine must be running to make some carburetor adjustments. • When engine is running, trimmer head is rotating and other parts are moving. • Read the Safety instructions on page 2 concerning proper use of the String Trimmer. WHAT CAN HAPPEN • Contact with rotating trimmer head or other moving parts could cause serious personal injury or death. HOW TO AVOID THE HAZARD • Keep hands, feet and clothing away from trimmer head and other moving parts.
• Make certain all moving parts have stopped and disconnect the spark plug before inspecting the equipment for damage. • Never use a String Trimmer that has chipped, cracked or broken trimmer head. Rewinding the Trimmer Spool POTENTIAL HAZARD • Use of improper line could cause line to break and be thrown in operator’s or bystander’s direction. Cutting with Nylon Trimmer Line WHAT CAN HAPPEN • Use of improper line could result in serious personal injury.
Maintenance NOTICE: Maintenance, replacement or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual. However, to obtain no charge repairs under the terms and provisions of the Toro warranty statement, any service or emission control part repair or replacement must be performed by an Authorized Toro Service Dealer. Air Filter 3. Clean the foam ring and filter screen with warm, soapy water. Let the screen and ring dry completely. 4.
Spark Plug Maintenance Interval • The spark plug should be removed from the engine and checked after each 25 hours of operation. • Replace the spark plug (NGK BPM6Y) after every 100 hours of operation. 2. Loosen the knob and lift off the cylinder cover (Fig. 9). 3. Twist the high tension lead boot on the spark plug back and forth a couple of times to loosen the boot, then pull the boot off of the spark plug. 4. Remove the spark plug. 5. Clean the electrodes with a stiff brush (Fig. 34). 6.
3. Clean all dirt and debris from the cooling fins and from around the cylinder base. 4. Reinstall the cylinder cover and the muffler cover (Figs 32 and 33). Model 53002 & 53003 1. With the engine at ambient (room) temperature, loosen the knob and remove the air cleaner cover (Fig. 9). 2. Loosen the knob and lift off the cylinder cover (Fig. 9). 3. Clean all dirt and debris from the cooling fins and from around the cylinder base. 4. Reinstall the cylinder and air cleaner covers (Fig. 9). 1.
General Cleaning and Tightening POTENTIAL HAZARD • Oil may squirt out of the spark plug opening when you pull the starter handle. WHAT CAN HAPPEN • Oil can cause eye injuries. POTENTIAL HAZARD • When engine is running, cutting head is rotating and other parts are moving. HOW TO AVOID THE HAZARD • Protect your eyes and keep your face away from the spark plug opening. WHAT CAN HAPPEN • Contact with rotating cutting head or other moving parts could cause serious personal injury or death.
2. POTENTIAL HAZARD • Without the Brushcutter blade shield installed on the String Trimmer, the Brushcutter blade can throw foreign objects. • Without the correct blade shield, handles and strap installed on the String Trimmer, the Brushcutter can produce side thrust which can expose the operator and bystanders to blade contact. Brushcutter Accessory Kit, Model No. 53050—allows you to convert the String Trimmer to a Brushcutter; available for Industrial Models (53002 and 53003) only.
Specifications Note: All models are CARB approved.
Federal and California Emission Control Warranty Statement A Two Year Limited Warranty Your Warranty Rights and Obligations The U.S. Environmental Protection Agency (EPA), the California Air Resources Board (CARB) and Toro are pleased to explain the emission control system warranty on your 1995 and later utility/lawn/garden equipment engine. In California, new utility/lawn/garden equipment engines must be designed, built and equipped to meet the State’s stringent anti–smog standards.
Failures caused by abuse, neglect, or improper maintenance are not covered. The use of add–on or modified parts can be grounds for disallowing a warranty claim. The manufacturer is not liable to cover failures of warranted parts caused by the use of add–on or modified parts. Toro is liable for damages to other engine components caused by the failure of a warranted part still under warranty.
warranty validation. The owner shall not be charged for diagnostic labor which leads to the determination that a warranted part is defective, if the diagnostic work is performed at a warranty station. The Toro Company is not liable for indirect, incidental or consequential damages in connection with the use of the TORO Products covered by this warranty, except for damages to other engine components caused by the failure of a warranted part still under warranty.
THE TORO TOTAL COVERAGE GUARANTEE A OneĆYear Limited Warranty (A TwoĆYear Full Warranty for Residential Use) LCG What Is Covered By This Express Warranty? The Toro Company promises to repair any TORO Product used for commercial, institutional, or rental purposes if defective in materials or workmanship for a period of one year from the date of purchase. The cost of parts and labor are included, but the customer pays the transportation cost.