FORM NO. 3322–708 ProLine 20 HP Traction Unit Model No. 30612 – 990001 & Up Operator’s Manual IMPORTANT: Read this manual carefully. It contains information about your safety and the safety of others. Also become familiar with the controls and their proper use before you operate the product.
Introduction Thank you for purchasing a Toro product. 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 replacement 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.
Contents Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safe Operating Practices . . . . . . . . . . . . . . Slope Chart . . . . . . . . . . . . . . . . . . . . . . . . . Safety and Instruction Decals . . . . . . . . . . 120 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Gasoline and Oil . . . . . . . . . . . . . . . . . . . . . . . . Recommended Gasoline . . . . . . . . . . . . . . Stabilizer/Conditioner . . . . . . . . . . . . . . . . Filling the Fuel Tank . . . .
Safety This machine meets or exceeds the B71.1–1990 specifications of the American National Standards Institute, in effect at the time of production. However, improper use or maintenance by the operator or owner can result in injury. To reduce the potential for injury, comply with these safety instructions and always pay attention to the safety alert symbol, which means CAUTION, WARNING, or DANGER—“personal safety instruction.” Failure to comply with the instruction may result in personal injury or death.
Safety 13. Mow only in daylight or good artificial light. 14. Do not operate the machine while under the influence of alcohol or drugs. 15. Watch for traffic when operating near or crossing roadways. 16. Use extra care when loading or unloading the machine onto a trailer or truck. • Keep all movement on slopes slow and gradual. Do not make sudden changes in speed or direction. • Avoid starting or stopping on a slope.
Safety Children Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and the mowing activity. Never assume that children will remain where you last saw them. The following requirements must be followed to prevent injury to children. 1. Keep children out of the mowing area and under the watchful care of another responsible adult. 2. Be alert and turn the machine off if children enter the area. 3.
Safety Slope Chart Read all safety instructions on pages 2–7.
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Safety 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. UNDER HOOD (Part No. 92–6288) ON HOOD (Part No. 92–6291) ON FLOOR PANEL (Part No. 54–0880) 120 ON ENGINE DUCT (Part No. 63–8440) REAR OF STEERING TOWER (Part No. 92–6277) ON IDLER LEVER (Part No. 55–4300) ON FRONT SEAT SUPPORT (Part No. 54–0920) ON SEAT PLATE (Part No.
Gasoline and Oil Recommended Gasoline Use UNLEADED Regular Gasoline suitable for automotive use (85 pump octane minimum). Leaded regular gasoline may be used if unleaded regular is not available. POTENTIAL HAZARD • In certain conditions gasoline is extremely flammable and highly explosive. WHAT CAN HAPPEN IMPORTANT: Never use methanol, gasoline containing methanol, or gasohol containing more than 10% ethanol because the fuel system could be damaged. Do not mix oil with gasoline.
Gasoline and Oil Stabilizer/Conditioner Filling the Fuel Tank Add the correct amount of gas stabilizer/conditioner to the gas. Using a stabilizer/conditioner in the machine: 1. Shut the engine off and set the parking brake. 2. Clean around each fuel tank cap and remove the cap. Add unleaded regular gasoline to both fuel tanks, until the level is 1/4 to 1/2 inch (6 mm to 13 mm) below the bottom of the filler neck. This space in the tank allows gasoline to expand.
Set-up Loose Parts Note: Use the chart below to verify all parts have been shipped. DESCRIPTION QTY.
Set-Up Install Seat Install Steering Wheel 1. 1. Move rear wheels so they point straight ahead. 2. Slide spacer and steering wheel onto steering shaft aligning mounting holes. Check that logo on steering cap points forward. 3. Secure steering wheel to shaft with roll pin (Fig. 2). Position seat assembly onto seat plate aligning mounting holes (Fig. 1). 2. Slide wire clamp over seat switch wire (Fig. 1). 3.
Set-Up Activate the Battery 2. Bulk electrolyte with 1.260 specific gravity must be purchased from a local battery supply outlet. Remove filler caps from the battery. Slowly pour electrolyte into each cell until the electrolyte level is up to the lower part of the tube (Fig. 3). 1 1. If already installed, remove the battery from the holder. POTENTIAL HAZARD • Battery electrolyte contains sulfuric acid which is a deadly poison and it causes severe burns.
Set-Up 5 7 3 POTENTIAL HAZARD • Charging battery produces gasses. 3 WHAT CAN HAPPEN • Battery gasses can explode. 4 6 2 HOW TO AVOID THE HAZARD • Keep cigarettes, sparks and flames away from battery. 1 4. When the battery is fully charged, disconnect the charger from the electrical outlet then from the negative and positive battery posts (Fig. 4). 5. Slowly pour electrolyte into each cell until the level is up to the lower part of the tube (Fig. 3) and install covers. 6.
Operation Think Safety First Please carefully read all the safety instructions and symbols in the safety section. Knowing this information could help you, your family, pets or bystanders avoid injury. Stopping 1. Move the throttle lever to “SLOW” (Fig. 6). Note: If the engine has been working hard or is hot, let it idle for a minute before turning the ignition key “OFF.” This helps cool the engine before it is stopped. In an emergency, the engine may be stopped by turning the ignition key to “OFF.
Operation Operating the Power Take Off (PTO) The power take off (PTO) switch engages and disengages power to the electric clutch. Forward 1. To go forward, place your foot on the traction pedal (Fig. 7). 2. Release the parking brake. 3. Slowly press on the upper pad of the traction pedal to move forward (Fig. 7). Engaging the PTO 1. Release pressure on the traction pedal to stop movement. (Fig. 7). 2. To engage lift cover and move the PTO switch to the “ON” position (Fig. 7).
Operation Parking Brake Implement Lift Lever Always set the parking brake when you stop the machine or leave it unattended. The implement lift lever (Fig. 8) is used to raise and lower various attachments. Setting the Parking Brake Raising Attachments 1. Release pressure on the traction pedal to stop movement. 1. Remove pressure from traction pedal to stop the machine. 2. Lift the parking brake lever up (Fig. 8) to apply the parking brake. 2. Pull implement lift lever (Fig.
Operation The Safety Interlock System 5. Understanding the Safety Interlock System The safety interlock system is designed to prevent the engine from rotating or starting unless: • The traction pedal is in neutral • The power take off (PTO) is disengaged The safety interlock system is designed to stop the engine if you rise from the seat when the power take off (PTO) is engaged or the motion control is not in neutral.
Operation Pushing or Towing the Machine In an emergency, the traction unit can be pushed or towed for a very short distance. Toro does not recommend this as standard procedure. IMPORTANT: Do not push or tow the traction unit faster than 2 to 3 mph because transmission may be damaged. If traction unit must be moved a considerable distance, transport on a truck or trailer. 1. To push or tow forward, the traction pedal must be fully depressed forward. 2.
Maintenance Service Interval Chart Service Operation Oil—check level Each Use 8 Hours 25 Hours 50 Hours 100 Hours 200 Hours X Oil—change* X Initial X Oil Filter–change* (100 hours, every other oil change) X X Safety System—check X Brake—check X Engine—clean outside and cooling fins X Storage Service X X X X X X Bearings\Bushings—grease* X X Foam Air Cleaner—clean* X X Paper Air Cleaner—clean* X X Paper Air Cleaner—replace* X Spark Plug(s)—check Belts—check for wear/cracks
Maintenance Air Cleaner 4. Carefully slide the foam element off the paper element (Fig. 10). Foam Element: Clean and re-oil after every 25 operating hours. 5. Unscrew the cover nut and remove the cover and paper element (Fig. 10). Paper Element: Replace after every 100 operating hours. Note: Service the air cleaner more frequently (every few hours) if operating conditions are extremely dusty or sandy. Removing the Foam and Paper Elements 1.
Maintenance 2. Paper Element Engine Oil A. Lightly tap the element on a flat surface to remove dust and dirt (Fig. 12). Service Interval/Specification B. Change oil: Inspect the element for tears, an oily film, and damage to the rubber seal. IMPORTANT: Never clean the paper element with pressurized air or liquids, such as solvent, gas, or kerosene. Replace the paper element if it is damaged, or cannot be cleaned thoroughly. • After the first 8 operating hours. • After every 50 operating hours.
Maintenance Checking Oil Level Changing/Draining Oil 1. 1. Start the engine and let it run five minutes. This warms the oil so it drains better. 2. Park the machine so that the drain side is slightly lower than the opposite side to assure the oil drains completely. Then disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 3. Place a pan below the oil drain. Remove the oil drain plug (Fig. 14). 4.
Maintenance Spark Plug Change Oil Filter Service Interval/Specification Service Interval/Specification Replace the oil filter every 100 hours or every other oil change. Note: 1. Change oil filter more frequently when operating conditions are extremely dusty or sandy. Drain the oil from the engine; refer to Changing/Draining Oil, page 22. 2. Remove the old filter and wipe the filter adapter (Fig. 14 and 15) gasket surface. 3.
Maintenance 5. Push out plastic cover from access hole in plate between engine and gas tank. 6. Pull the wire(s) off the spark plug(s). Now clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage. 7. 2 3 1 1 mm (0.040 in.) Remove the spark plug(s) and metal washer. 2 Figure 17 1 1. Center electrode insulator 2. Side electrode 3. Air gap (not to scale) Installing the Spark Plug(s) 1. Install the spark plug(s) and metal washer.
Maintenance Greasing and Lubrication 2. Lubricate spindles, steering shaft and pivot (Fig. 19). Service Interval/Specification Grease all bearings and bushings every 25 operating hours. Grease more frequently (daily) when operating conditions are extremely dusty or sandy. Grease Type: General-purpose lithium base grease. How to Grease 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 2.
Maintenance 4. Lubricate the traction pedal bushings with a few drops of SAE 10W–30 oil or dry spray lube and the steering shaft (Fig. 21). Brake Always set the parking brake when you stop the machine or leave it unattended. If the parking brake does not hold securely, an adjustment is required. Checking the Brake 1. Park the machine on a level surface, disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 2.
Maintenance Fuel Filter Adjust the Brake If drive wheels do not rotate freely when brake lever is in the OFF position, or brake does not hold when lever is in the ON position, an adjustment is required. Service Interval/Specification Replace the fuel filter after every 100 operating hours or yearly, whichever occurs first. 1. Move brake lever to the ON position. 2. Measure distance between disc brake actuating arm and stop pin on axle bracket assembly (Fig. 22).
Maintenance Tire Pressure Cleaning the Cooling System Service Interval/Specification Service Interval/Specification Maintain the air pressure in the front and rear tires as specified. Check the pressure at the valve stem after every 50 operating hours or monthly, whichever occurs first (Fig. 24). Check the tires when they are cold to get the most accurate pressure reading.
Maintenance Adjust Belts Replace Belts If belt slippage occurs, idler pulleys must be adjusted to increase belt tension. To replace traction or jackshaft belt, use the following procedures and belt routing diagram (Fig. 26). 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 2.
Maintenance Adjust Lift Cylinder and Counterbalance Springs 5. Start engine and raise lift arms (cutting unit) until lift cylinder is fully retracted and lift (cutting unit) is fully raised. 1. Raise seat and engine cover. 6. 2. Start engine and lower lift arms (cutting unit) until lift cylinder is fully extended and lift (cutting unit) is fully lowered. Check distance between clevis pin and bottom hooks of springs (Fig. 25). Distance should be 1/4 inch (6mm) or less. 7.
Maintenance Adjust Transmission Neutral The machine must not creep when traction pedal is released. If it does creep, an adjustment is required. 1. Park machine on a level surface, lower cutting unit and shut engine off. Disengage the PTO and engage the parking brake. 2. Raise seat and engine cover. 3. Jack up front of machine until tires are off shop floor. Support machine with jack stands to prevent it from falling accidentally. Figure 29 1. Adjustment cam 4.
Maintenance Adjust Electric Clutch Check Hydraulic System Fluid The clutch is adjusted to ensure proper engagement and braking action. The hydraulic system is designed to operate on SAE 10W–30 engine oil or, as a substitute, SAE 10W–40 engine oil. The reservoir is filled at the factory with approximately 5 U.S. quarts (4.73l) of 10W–30 engine oil. Check reservoir oil level before engine is first started and daily thereafter. 1.
Maintenance Change Hydraulic System Oil The hydraulic system oil must be changed after every 250 hours of operation or yearly, whichever comes first. The reservoir has a capacity of approximately 5 U.S. quarts (4.73l). 1. Park machine on a level surface, lower cutting unit, engage parking brake. and shut engine off. 2. Clean the area around the hydraulic oil filter and remove the filter from the bottom of the filter housing. use bottom type filter wrench (Fig. 32). 3.
Maintenance Adjust Steering 1. Measure toe-in distance (at axle height) at front and rear of steering tires. Front measurement must be 0–1/4 inch (6 mm) less than rear measurement. 2. Loosening jam nuts and rotating tie rod to adjust clearance (Fig. 33). 3. Turn steering wheel full left to achieve a full left turn (Fig. 33). 4. Check clearance between left tire and tie rod. There should be 1 inch (25 mm) ± 1/4 inch (6 mm) clearance at this position. 5.
Maintenance Hydraulic Schematic TRANSMISSION RESERVOIR FILTER VALVE CYLINDER T-0084 120 35
Maintenance Change Front Axle Oil Battery After every 500 hours of operation, change oil in the front axle. Service Interval/Specification 1. Run machine before changing oil to warm oil. Warm oil flows more freely and carries more contaminants than cold oil. 2. Clean area around drain plug and place a drain pan below drain plug on axle (Fig. 34). 3. Remove drain plug and allow oil to flow into drain pan (Fig. 34). After oil is drained, reinstall drain plug. 4.
Maintenance Adding Water to the Battery The best time to add distilled water to the battery is just before you operate the machine. This lets the water mix thoroughly with the electrolyte solution. 1. Clean the top of the battery with a paper towel. 2. Lift off the filler caps (Fig. 35). 3. WHAT CAN HAPPEN • Battery gasses can explode.
Maintenance Wiring Diagram IGNITION SWITCH CIRCUITRY START B+S+I RUN A+B+I X+Y DIODE MODULE OFF CONNECTOR CLUTCH OPEN GREY WHITE BLACK BLACK ENGINE CONNECTOR N O HOUR METER GREEN C TO MAGNETO N C BLACK RELAY BLUE TO REGULATOR PTO SWITCH CIRCUITRY A+B ON OFF C+D BLUE BLUE A BROWN BC PTO SWITCH I X ORANGE D Y A TO STARTER VIOLET S B KEY SWITCH PARKING BRAKE CLOSED WHEN PARKING BRAKE IN OFF POSITION NEUTRAL CLOSED WHEN TRACTION PEDAL IS IN NEUTRAL STARTER SEAT OPEN WHEN OPE
Maintenance Cleaning and Storage 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to “OFF” to stop the engine. Remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine. Clean dirt and chaff from the outside of the engine’s cylinder head fins and blower housing. IMPORTANT: You can wash the machine with mild detergent and water. Do not pressure wash the machine.
Maintenance 11. Remove the spark plug(s) and check its condition; refer to Spark Plug, page 23. With the spark plug(s) removed from the engine, pour two tablespoons of engine oil into the spark plug hole. Now use the starter to crank the engine and distribute the oil inside the cylinder. Install the spark plug(s). Do not install the wire on the spark plug(s). 12. Drain gasoline from the fuel tank. After fuel is drained, start the engine and let it idle until all gasoline is consumed and the engine stops.
Troubleshooting PROBLEM Starter does not rotate. Engine g will not start,, starts hard,, or f il to fails t keep k running. i Engine g loses power. p POSSIBLE CAUSES CORRECTIVE ACTION 1. Power take off (PTO) switch is ENGAGED. 1. Move (PTO) switch to DISENGAGED. 2. Traction control pedal is not in neutral. 2. Move traction control pedal to neutral position. 3. Electrical connections are corroded or loose. 3. Check electrical connections for good contact. 4. Fuse is blown. 4.
Troubleshooting PROBLEM Engine g overheats. Abnormal vibration. Machine does not drive. 42 POSSIBLE CAUSES CORRECTIVE ACTION 1. Engine load is excessive. 1. Reduce ground speed. 2. Oil level in crankcase is low. 2. Add oil to crankcase. 3. Cooling fins and air passages under engine blower housing are plugged. 3. Remove obstruction from cooling fins and air passages. 1. Engine mounting bolts are loose. 1. Tighten engine mounting bolts. 2.
A OneĆYear Limited Warranty (A TwoĆYear Full Warranty for Residential Use) LCE 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. The following time frames apply from the date of purchase: Product Warranty Period All Products . . . . . . . . . . . . . . . . . . 1 year All Spindles . . . . . . . . . . . . . . . . . . .