FORM NO. 3319–778 Z–320 OUT FRONT Z Traction Unit Model No. 74180 – 890001 & 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 . . . . . . . . . . Gasoline and Oil . . . . . . . . . . . . . . . . . . . . . . . . Recommended Gasoline . . . . . . . . . . . . . . Stabilizer/Conditioner . . . . . . . . . . . . . . . . Filling the Fuel Tank . . . . . . . . . . . . . . . . . Check Engine Oil Level . . . . . . . . .
Safety 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. General Operation 1. Read, understand, and follow all instructions in the operator’s manual and on the machine before starting. 2.
Safety 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. 17. Do not touch equipment or attachment parts which may be hot from operation. Allow to cool before attempting to maintain, adjust or service. 18. Wear seat belt when operating a machine with ROPS (roll over protection). • Keep all movement on slopes slow and gradual.
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 2–4.
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. ON INSTRUMENT PANEL (Part No. 98–4366) BELOW FRONT OF SEAT (Part No. 98–1313) 6 UNDER SEAT PAN ON RIGHT FRAME AND REAR OF SEAT PAN (Part No. 77–3100) ON FRONT FRAME MEMBER (Part No. 98–4361) ON REAR FRAME MEMBER AND CLUTCH GUARD (Part No. 93–9198) ON UTILITY BOX LATCH (Part No.
Gasoline and Oil Recommended Gasoline Stabilizer/Conditioner Use UNLEADED Regular Gasoline suitable for automotive use (85 pump octane minimum). Leaded regular gasoline may be used if unleaded regular is not available. Add the correct amount of gas stabilizer/conditioner to the gas. Using a stabilizer/conditioner in the machine: 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.
Assembly Loose Parts Note: Use the chart below to verify all parts have been shipped. DESCRIPTION 8 QTY.
Assembly DESCRIPTION QTY. USE Pivot pin assembly 2 Hairpin cotter 2 Key 2 Safety Booklet 1 Operator’s Manual 1 Engine Operator’s Manual 1 Parts Catalog 1 For ordering parts Registration card 1 Fill out and return to Toro Install mower attachment Read before operating machine Install Drive Wheels Install Castor Wheel 1. Jack up front of unit and remove lug nuts from studs (Fig. 1). 1. Remove nuts, washers, spacer and axle shaft from fork (Fig. 2). 2.
Assembly Install Seat 1. Tip seat pan up and position seat over slots (Fig. 3). 2. Secure with 5/16” lock washer, 5/16” washer and 5/16–18 x 3/4” (19 mm) bolt, through from the bottom (Fig. 3). POTENTIAL HAZARD • Battery electrolyte contains sulfuric acid which is a deadly poison and it causes severe burns. WHAT CAN HAPPEN • If you carelessly drink electrolyte you could 3. Connect seat switch lead to wire harness terminal (Fig. 3). 4. Slide to comfortable operating position and tighten bolts.
Assembly 3. Leave the covers off and connect a 3 to 4 amp battery charger to the battery posts (Fig. 5). Charge the battery at a rate of 4 amperes or less for 4 hours (12 volts). Install Battery 1. Fill battery with electrolyte and charge, refer to BATTERY, page 33. 2. Position battery in tray with terminal posts toward the engine (Fig. 6). 3. Slide the red terminal boot onto the red battery cable. 4.
Assembly Install Drive Shaft Remove Drive Shaft Install the drive shaft only when ready to attach a mower deck to the traction unit. 1. Secure universal joint to gearbox shaft with (2) 3/8”–16 x 1-5/8” (41.5 mm) bolts and 3/8”–16 locknuts (Fig. 7). POTENTIAL HAZARD • If the drive shaft is attached to the tractor and not to a mower deck or other attachment, and the tractor is operated, the drive shaft may flail about dangerously.
Operation Think Safety First Parking Brake Please carefully read all the safety instructions on pages 2–8. Knowing this information could help you, your family, pets or bystanders avoid injury. Always set the parking brake when you stop the machine or leave it unattended. Setting the Parking Brake Controls 1. Move the motion control levers to the neutral (Fig. 1). Become familiar with all the controls (Fig. 1) before you start the engine and operate the machine. 2.
Operation Starting and Stopping Engine 2 1 Starting 1. Sit down on the seat and set the parking brake; refer to Setting the Parking Brake, page 13. 2. Move the motion control levers to neutral. 3. Move the PTO (power take off) to “OFF” (Fig. 3). 4. Move the throttle control midway between “SLOW” and “FAST” positions before starting a cold engine. 5. Move the choke control to “ON” position before starting a cold engine. Note: 6. A warm or hot engine may require choking.
Operation Stopping 1. Move the throttle lever to “SLOW” (Fig. 5). 2. Set the parking brake. 3. Turn the ignition key to “OFF” (Fig. 6). Note: 4. 5. 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 The Safety Interlock System Instruments Understanding the Safety Interlock System Hour Meter The safety interlock system is designed to prevent the engine from starting unless: • The parking brake is “SET” • The power take off (PTO) is disengaged “OFF” • The motion control levers are in neutral 1 The safety interlock system also is designed to stop the engine when the motion control levers are moved out of neutral with the parking brake on “SET” or if you rise from the seat when the po
Operation Driving Forward or Backward The throttle control regulates the engine speed as measured in rpm (revolutions per minute). Place the throttle control in the “FAST” position for best performance. Always operate in the full throttle position 1. Release the parking brake; refer to Setting the Parking Brake, page 13. 2. To go forward, slowly push the motion control levers forward (Fig. 9). Engine will kill if motion control levers are moved with parking brake engaged.
Operation Positioning the Seat Pushing the Machine by Hand The seat can move forward and backward. Position the seat where you have the best control of the machine and are most comfortable. 1. To adjust, tip seat forward and loosen the seat mounting bolts (Fig. 10). 2. Slide the seat to the desired position in the adjusting slots and tighten the mounting bolts. IMPORTANT: Always push the machine by hand. Never tow the machine because hydraulic damage may occur. To Push the Machine 1.
Maintenance Service Interval Chart Service Operation Each Use 8 Hours Hydraulic fluid–check level Initial X Oil—check level 25 Hours 50 Hours 100 Hours X Initial X Oil Filter–change (200 hours or every other oil change) Hydraulic filter–change Storage Service X X Oil—change* Safety System—check 200 Hours Initial X X X X X X X Chassis—grease* X X Drive Shaft—grease* X X PTO Gearbox–check level (change every 500 hours or six months) X Foam Air Cleaner—service* X X X Paper
Maintenance POTENTIAL HAZARD • If you leave the key in the ignition switch, someone could start the engine. WHAT CAN HAPPEN • Accidental starting of the engine could seriously injure you or other bystanders. HOW TO AVOID THE HAZARD • Remove the key from the ignition switch and pull the wire(s) off the spark plug(s) before you do any maintenance. Also push the wire(s) aside so it does not accidentally contact the spark plug(s).
Maintenance 3. Carefully slide the foam element off the paper element (Fig. 12). 4. Unscrew the cover nut and remove the cover and paper element (Fig. 12). 1 Cleaning the Foam and Paper Elements 1. Foam Element 2 A. Wash the foam element in liquid soap and warm water. When the element is clean, rinse it thoroughly. m–1213 Figure 14 B. Dry the element by squeezing it in a clean cloth (do not wring). 1. Paper element C. Put one or two ounces of oil on the element (Fig. 13).
Maintenance Engine Oil Checking Oil Level Change oil: • After the first 5 operating hours. • After every 100 operating hours. Note: 1. Park the machine on a level surface, disengage the power take off (PTO) and turn the ignition key to “OFF” to stop the engine. Remove the key. 2. Clean around the oil dipstick (Fig. 15) so dirt cannot fall into the filler hole and damage the engine. 3. Unscrew the oil dipstick and wipe the metal end clean (Fig. 15). 4.
Maintenance Changing/Draining Oil Change Oil Filter 1. Start the engine and let it run five minutes. This warms the oil so it drains better. Replace the oil filter every 200 hours or every other oil change. 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.
Maintenance Spark Plug Checking the Spark Plug Check the spark plug(s) after every 200 operating hours. Make sure the air gap between the center and side electrodes is correct before installing the spark plug. Use a spark plug wrench for removing and installing the spark plug(s) and a gapping tool/feeler gauge to check and adjust the air gap. Install a new spark plug(s) if necessary. 1. IMPORTANT: Never clean the spark plug(s).
Maintenance Greasing and Lubrication 2. Grease the fittings on drive shaft and universal joints (Fig. 8). Grease the castor wheel bearings and motion control lever pivots every 8 operating hours. Grease more frequently when operating conditions are extremely dusty or sandy. Grease Type: General-purpose grease. How to Grease 1. Disengage the power take off (PTO) and turn the ignition key to “OFF” to stop the engine. Remove the key. 2. Clean the grease fittings with a rag.
Maintenance 6. 4. Fill oil as in steps 1 and 2. Note: Dispose of the used oil at a certified recycling center. Install screen from rear and raise over oil cooler. Secure with previously removed hardware (Fig. 23). 3 3 3 1 1 2 ÑÑÑÑÑÑÑÑ ÑÑÑÑÑÑÑÑ ÑÑÑÑÑÑÑÑ 2 2 4 m–3296 4 Figure 23 m-3294 Figure 22 1. Gearbox 2. Side plug 1. Oil cooler screen 2. Lower bolts 3. Top bolts 4. Engine air intake 3. Top plug 4.
Maintenance Fuel Filter Fuel Tank Replace the fuel filter after every 200 operating hours or yearly, whichever occurs first. Draining The Fuel Tank Replacing the Fuel Filter POTENTIAL HAZARD • In certain conditions gasoline is extremely flammable and highly explosive. Never install a dirty filter if it is removed from the fuel line. 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.
Maintenance 5. Install the fuel line onto the fuel shut-off valve. Slide the hose clamp close to the fuel shut-off valve to secure the fuel line (Fig. 26). 4 3. Remove cap from filler neck and look inside to check fluid level. Fluid level should be above the bottom of the screen (Fig. 27). 4. If level is low, add fluid to raise level to above the bottom of the screen (Fig. 27). 5. Install cap on filler neck. 1 3 1 2 2 m–3293 Figure 26 1. Fuel shut-off valve 2. Hose clamp 3 3. Fuel line 4.
Maintenance 3. Place drain pan under filter, remove the old filter and wipe the filter adapter gasket surface clean (Fig. 28). 1 3 2 m–1256 Figure 29 1 m–3291 1. Hydraulic filter 2. Gasket 3. Adapter Figure 28 1. Hydraulic filter Bleeding Hydraulic System 4. Apply a thin coat hydro fluid to the rubber gasket on the replacement filter (Fig. 29). The traction system is self bleeding, however, it may be necessary to bleed the system if fluid is changed or after work is performed on the system.
Maintenance 3 1 5 POTENTIAL HAZARD • Hydraulic fluid escaping under pressure can penetrate skin and cause injury. WHAT CAN HAPPEN • Fluid accidentally injected into the skin must be surgically removed within a few hours by a doctor familiar with this form of injury or gangrene may result. HOW TO AVOID THE HAZARD • Keep body and hands away from pin hole leaks or nozzles that eject high pressure hydraulic fluid. • Use cardboard or paper to find hydraulic leaks.
Maintenance 4. Remove belts over clutch (Fig. 32). 5. Install new belts over clutch. Align clutch hub key with crankshaft keyway and notch with stop bracket. Slide clutch onto crankshaft (Fig. 32). 6. Apply Loctite (blue) thread lock to threads and install washer and bolt securing clutch. 7. Torque clutch mounting bolt to 50–60 ft–lb. (68–81 N m). 8. Route belts around clutch and gearbox pulleys and above spring loaded idler (Fig. 32). 9.
Maintenance Replacing the Traction Belt Fuse Check traction drive belt for wear after every 50 hours of operation. Service Interval/Specification The electrical system is protected by fuses. It requires no maintenance, however, if a fuse blows check component/circuit for malfunction or short. 1. Remove PTO belts; refer to Replacing Power Take Off (PTO) Belts. 2. Push spring loaded idler down and remove traction belt from the engine, fixed idler and hydro pump pulleys (Fig. 33).
Maintenance Battery Check the electrolyte level in the battery every 8 hours. Always keep the battery clean and fully charged. Use a paper towel to clean the battery case. If the battery terminals are corroded, clean them with a solution of four parts water and one part baking soda. Apply a light coating of grease to the battery terminals to prevent corrosion. IMPORTANT: Do not overfill the battery because electrolyte (sulfuric acid) can cause severe corrosion and damage to the chassis. 4.
Maintenance Wiring Diagram 34
A C B I FRONT PUMP 94-4705 94-4705 C A PUMP REAR B I 94-4714 RIGHT MOTOR A B 94-4712 94-4710 94-4711 FILTER 94-4711 HYDRAULIC TANK MOTOR LEFT B A 94-4713 94-4709 Maintenance Hydraulic Diagram COOLER 35
Maintenance Cleaning and Storage 1. 2. Disengage the power take off (PTO), set the parking brake and turn the ignition key to “OFF” to stop the engine. Remove the key. 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.
Troubleshooting PROBLEM Starter does not crank Engine will not start, starts hard, or f il to fails t keep k running. i Engine loses power. POSSIBLE CAUSES CORRECTIVE ACTION 1. Power take off (PTO) is ENGAGED. 1. Move power take off (PTO) to DISENGAGED. 2. Parking brake is not on. 2. Set parking brake. 3. Motion control levers are not in neutral. 3. Move motion control levers into neutral. 4. Battery is dead. 4. Charge the battery. 5. Electrical connections are corroded or loose. 5.
Troubleshooting PROBLEM Engine overheats. Abnormal vibration. Machine does not drive. 38 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) 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.
