FORM NO. 3322-369 ProLine Brushcutter Model No. 53020 — 895001 & Up Model No. 53021 — 895001 & 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.
Contents Page Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Operating Position . . . . . . . . . . . . . . . . . . . . . . . . . 12 Cutting Direction . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Cutting Blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Spark Plug . . . . . . . . . . . .
Introduction Thank you for purchasing a Toro product. For your convenience, write the product model and serial numbers in the space below. All of us at Toro want you to be completely satisfied with your new product, so feel free to contact your local Authorized Service Dealer for help with service, genuine Toro parts, or other information you may require. Whenever you contact your Authorized Service Dealer or the factory, always know the model and serial numbers of your product.
Safety Operator Safety Brushcutter Safety 1. Read and understand this Operator’s Manual before using this product. Be thoroughly familiar with the proper use of this product. 1. Make sure the Brushcutter is assembled correctly and that the Brushcutter blade is correctly installed and securely fastened as instructed in the Assembly section. 2. Never allow children to operate the Brushcutter. It is not a toy. Never allow adults to operate the unit without first reading the Operator’s Manual. 2.
. Move the Brushcutter at least 10 feet (3 m) away from the fueling location before starting the engine (Fig. 2). m-2967 Figure 3 1. 50 ft. (15 m) Minimum m-3021 5. If you are approached while operating the Brushcutter, stop the engine and Brushcutter blade rotation. Figure 2 1. 10 feet (3m) Minimum 6. Use the Brushcutter only in daylight or good artificial light. 7. Do not remove the Brushcutter fuel tank cap while the engine is running, or right after stopping the engine. 8.
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.
Assembly Bullhorn Handle Installation Installing Shield IMPORTANT: Be careful not to damage the throttle cable and stop switch wires when you remove the bullhorn handles from the shipping carton. POTENTIAL HAZARD • Foreign objects can be thrown by Brushcutter. 1. Loosen the four Phillips hex head screws on the top of the clamp bracket (Fig. 4). WHAT CAN HAPPEN • Contact with thrown objects can cause personal injury. 2. Insert the left and right bullhorn handles into the clamp bracket.
Installing Brushcutter Blade POTENTIAL HAZARD • If the Brushcutter blade is not adequately tightened, it can come loose from the Brushcutter during use. WHAT CAN HAPPEN • This may cause damage to property or personal injury. HOW TO AVOID THE HAZARD • Make sure the Brushcutter blade is securely fastened to the splined shaft in the gearcase. 1. Remove the blade bolt, stabilizer and clamping washer from the splined shaft out of the gearcase (Fig. 6).
Attaching Strap Installing Brushcutter Blade Cover POTENTIAL HAZARD • Without the strap installed on the Brushcutter, the blade can produce side thrust which can expose the operator and bystanders to blade contact. POTENTIAL HAZARD • Brushcutter blade is sharp. WHAT CAN HAPPEN • Contact with sharp blade can cause serious personal injury. • An unprotected blade is subject to damage. WHAT CAN HAPPEN • Contact with the Brushcutter blade can cause severe personal injury.
Before Operation 4. Always open the fuel tank cap slowly to release any possible overpressure inside the tank. Oil and Fuel 5. Do not overfill the fuel tank. Stop filling 1/4–1/2 inch (6mm–13mm) from the top of the tank. 6. Tighten the tank fuel cap carefully but firmly after refilling. 7. Wipe up any spilled fuel before starting the engine. POTENTIAL HAZARD • In certain conditions gasoline is extremely flammable and highly explosive. 8.
Fuel Mixture Chart STABILIZER/CONDITIONER OR A SIMILAR PRODUCT. TORO’S STABILIZER/CONDITIONER IS A PETROLEUM DISTILLATE BASED CONDITIONER/STABILIZER. Gasoline TORO DOES NOT RECOMMEND STABILIZERS WITH AN ALCOHOL BASE SUCH AS ETHANOL, METHANOL OR ISOPROPYL. ADDITIVES SHOULD NOT BE USED TO TRY TO ENHANCE THE POWER OR PERFORMANCE OF MACHINE. 50:1 2-cycle oil 1 gallon 2.6 oz. 2 gallons 5.2 oz. 5 gallons 12.8 oz.
Starting And Stopping Before Starting The Engine 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. m-2938 Figure 10 Cold Starting Procedure 1. Starter Handle The carburetors on Toro engines contain a choke system.
Hot Restart 1. Make sure the 3mm hex wrench has been removed from the gearcase and boss adapter before you start the engine (Fig 6). To start an engine that is already warmed up (hot restart), or if the ambient temperature exceeds 68_F (20_C): 2. The operator must be wearing the strap attached to the Brushcutter, and the Brushcutter must be on the operator’s right side. 1.
IMPORTANT: To detach the strap quickly from the Brushcutter, pull upward on the red band (Fig. 7). Cutting Direction POTENTIAL HAZARD • Cutting heavy brush or small trees from the wrong direction can cause the Brushcutter blade to kick back. WHAT CAN HAPPEN • Contact with the Brushcutter blade can cause severe personal injury. m-2996 Figure 13 HOW TO AVOID THE HAZARD • Always swing the Brushcutter from right to left when cutting heavy brush or small trees as shown in Fig. 12. 1.
Maintenance NOTICE:Maintenance, replacement or repair of the emission control devices and systems may be performed by any non-road 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. m-2997 Figure 14 1. 2. 3. 4. Housing (straight shaft) Housing (curved shaft) Eyelet (2) Spool (with Line) 5.
Spark Plug 8. Do not overtighten the spark plug when installing. The tightening torque is 95–148 in. lbs. (10.7–16.6 NSm). Maintenance Interval 9. Reinstall the cylinder and air cleaner covers (Figs. 17). • The spark plug should be removed from the engine and checked after each 25 hours of operation. • Replace the spark plug after every 100 hours of operation. ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ ÌÌÌÌÌ Spark Plug Maintenance 1.
To adjust the engine idle speed, rotate the idle speed adjustment screw on the carburetor (Fig. 20). • Turn the idle speed screw in (clockwise) to increase the engine idle speed. • Turn the screw out (counterclockwise) to decrease the engine idle speed. If idle speed adjustment is necessary, and after adjustment the trimmer head rotates or the engine stalls, stop using the String Trimmer immediately! m-2931 Contact your local authorized Toro Dealer for assistance and servicing. Figure 19 1.
Spark Arrester 2. Loosen the knob and lift off the cylinder cover (Fig. 17). 3. Remove the two socket head screws holding the spark arrester assembly to the muffler and remove the tail, gasket and spark arrester (Fig. 21). POTENTIAL HAZARD • Muffler surface becomes hot when Brushcutter is in operation and remains hot for some time after the engine is shut off. 4. Remove the three socket head screws holding the muffler cover to the muffler body and remove the muffler cover (Fig. 21).
Gearcase Maintenance The gearcase is a sealed unit which has been greased at the factory. No gearcase maintenance or lubrication is required or recommended. General Cleaning and Tightening m-2992 Figure 22 POTENTIAL HAZARD • When engine is running, cutting blade is rotating and other parts are moving. 1. 0.118“ (3mm) WHAT CAN HAPPEN • Contact with rotating cutting blade or other moving parts could cause serious personal injury or death.
80-tooth Blade 6. Pull the starter handle once. Sharpen with a single-cut flat file and a round file (Fig. 24). 7. Slowly pull the starter handle to bring the piston to the top of the cylinder (TDC). 8. Reinstall the spark plug. 9. Store the Brushcutter in a dry place away from excessive heat, sparks or open flame. m-2994 Figure 24 1. 1.4–1.7 Times Original Blade Thickness 2. 40° 3. 80° 4. Blade Thickness 5. 0.039”–0.059” (1–1.5mm) Radius 6.
Accessories The following accessories may be purchased at your local authorized TORO Service Dealer. • Four-tooth blade—exclusively for grass cutting, especially softer grass such as meadow grass. 1. Deluxe Strap Harness, Model No. 46–2961—safety release straps made out of durable nylon webbing (Fig. 26). • Eight-tooth blade—for grass and lawns. • 80-tooth blade—for bush cutting, bamboo grass, and hard and thick grass. IMPORTANT: Use only the correct Brushcutter blades approved for your model.
Troubleshooting Problem Engine Will Not Start Engine Will Not Idle Cause Action STOP switch set to off position Empty fuel tank Move switch to on position Fill fuel tank Primer bulb wasn’t pushed enough Press primer bulb until fuel flows through fuel return line Engine flooded Use warm engine starting procedure Idle speed set incorrectly Set idle speed Engine Lacks Power or Stalls When Throttle wire has come loose Cutting Dirty air filter Tighten throttle wire Clean or replace air filter If fu
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.
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. Some states do not allow exclusions of incidental or consequential damages, so the above 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.
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.