Form No. 3355-374 Rev A Z597-D Z Master® with a 62 or 72 Rear Discharge Mower Model No. 74280TE—Serial No. 260000001 and Up Model No. 74281TE—Serial No. 260000001 and Up Register your product at www.Toro.
This spark ignition system complies with Canadian ICES-002 Figure 2 Introduction 1. Safety alert symbol Read this information carefully to learn how to operate and maintain your product properly and to avoid injury and product damage. You are responsible for operating the product properly and safely. This manual uses 2 other words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention.
Using the Z Stand® ........................... 30 Operating Tips .................................. 31 Maintenance...................................................... 33 Recommended Maintenance Schedule(s) ............................... 33 Lubrication................................................ 34 Greasing and Lubrication................... 34 Greasing the Mower Deck and Belt Idlers................................. 34 Where to Add Light Oil or Spray Lubrication........................
Safety ◊ the type of machine is unsuitable for its task; This machine meets or exceeds European Standards 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.
• Mow only in daylight or in good artificial light. • Before attempting to start the engine, disengage all blade attachment clutches and shift into neutral. • Do not use on slopes greater than 15 degrees. • Remember there is no such thing as a safe slope. Travel on grass slopes requires particular care.
Toro Riding Mower Safety • Watch for ditches, holes, rocks, dips, and rises that change the operating angle, as rough terrain could overturn the machine. The following list contains safety information specific to Toro products or other safety information that you must know that is not included in the CEN standard. • Engine exhaust contains carbon monoxide, which is an odorless, deadly poison that can kill you. Do not run engine indoors or in an enclosed area.
Sound Power Level This unit has a guaranteed sound power level of 105 dBA, based on measurements of identical machines per EN 11094. Vibration Level Hand-Arm This unit does not exceed a hand/arm vibration level of 1.26 m/s2, based on measurements of identical machines per EN 1033. Whole Body This unit does not exceed a whole body vibration level of 0.06 m/s2, based on measurements of identical machines per EN 1032.
Slope Chart 8
Safety and Instructional 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. 58-6520 1. Grease 93-7824 1. 2. 3. Thrown object hazard—stay a safe distance from the machine. Thrown object hazard, mower—keep the deector in place. Cutting/dismemberment of hand or foot—stay away from moving parts. 93-7010 1. Thrown object hazard— 2. Thrown object hazard, mower—keep the deector in place. 3.
7-1866 1. Sliding and loss of control hazard and tipping hazard, drop-offs—do not operate the machine near drop-offs, slopes greater than 15 degrees, or water; keep a safe distance from drop-offs; do not turn sharply while traveling fast, instead, slow down and turn gradually; if the roll bar is raised, wear the seat belt; if the roll bar is lowered, do not wear the seat belt. 99-8939 1. Read the Operator’s Manual. 2. Height of cut 3.
107-3961 1. Height of cut in millimeters 107-3069 1. Warning—there is no rollover protection when the roll bar is down. 2. To avoid injury or death from a rollover accident, keep the roll bar in the raised and locked position and wear the seat belt. Lower the roll bar only when absolutely necessary; do not wear the seat belt when the roll bar is down. 3. Read the Operator’s Manual; drive slowly and carefully. 107-3962 1.
107-3963 1. Cutting/dismemberment hazard, mower blade—do not carry passengers and keep bystanders away. 2. Cutting/dismemberment 3. Thrown object hazard—keep 4. Before starting the engine, hazard of hand or foot, bystanders a safe distance clean grass and debris from mower blade—remove the from the machine and keep the mower belt and pulleys, ignition key and read the the deector in place. insert the ignition key, and instructions before servicing start the engine.
107-7705 107-3968 1. Disengage 2. Engage 3. Parking brake 107-3969 107-7706 1. Warning—read the Operator’s Manual. 2. Crushing hazard, mower—engage the parking brake, stop the engine, and remove the ignition key before working under the mower. 3. 1. Read the Operator’s Manual. 2. Pulsing tone indicates low oil pressure or alternator not charging. Continuous tone indicates that the engine is overheating. 107-3978 107-7719 1.
107-9309 1. Warning—read the Operator’s Manual for information on charging the battery; contains lead; do not discard. 2. Read the Operator’s Manual. Manufacturer’s Mark 1. Indicates the blade is identied as a part from the original machine manufacturer. 110-5609 1. Read the Operator’s Manual. 110-5593 5. 1. Read the Operator’s Manual before servicing or performing maintenance. 2. Maintenance time interval 6. 3. Engine oil 7. 4. Hydraulic oil level 14 8.
110-5724 1. 2. 3. 4. 5. 6. Water in fuel warning Engine—preheat Engine—stop Engine—run Engine—start Power take-off (PTO) 7. 8. 9. 10. 11. Temperature Power (Volts) Slow Fast Continuous variable setting 107-3967 1. Fast 3. Neutral 5. Warning—read the Operator’s Manual. 2. Slow 4. Reverse 6. Poison and caustic liquid/chemical burn hazard—keep children a safe distance from the battery. 15 7. Explosion hazard—no re, open ames, or smoking; avoid sparks. 8.
Product Overview Hour Meter The hour meter records the number of hours the engine has operated. It operates when the engine is running. Use these times for scheduling regular maintenance (Figure 4). Glow Plug Light (Orange Light) The glow plug indicator light turns on when the ignition switch is turned to the on position. When the light turns off, the engine is ready to be started (Figure 4). Water in Fuel Light (Red Light) The water in fuel light turns on when there is water in the fuel.
Operation In certain conditions, fuel is extremely flammable and highly explosive. A fire or explosion from fuel can burn you and others and can damage property. Note: Determine the left and right sides of the machine from the normal operating position. Adding Fuel • Fill the fuel tank outdoors, in an open area, when the engine is cold. Wipe up any fuel that spills. The engine runs on clean, fresh diesel fuel with a minimum octane rating of 40.
2. Clean around each fuel tank cap and remove the cap. Add fuel to both fuel tanks, until the level is 1/4 to 1/2 inch (6 to 13 mm) below the bottom of the filler neck. This space in the tank allows the fuel to expand. Do not fill the fuel tanks completely full. 3. Install fuel tank caps securely. Wipe up any fuel that may have spilled. 4. If possible, fill the fuel tank after each use. This will minimize possible buildup of condensation inside the fuel tank. Figure 5 Checking the Engine Oil Level 1.
2. Lower the roll bar to the down position. There are two down positions. See Figure 6 for the positions. 3. Install the two pins and secure them with the hairpin cotter pins (Figure 7). Figure 6 1. Full down position 2. Down position with bagger installed Figure 7 1. 2. Important: Ensure that the rear part of the seat is secured with the seat latch. Roll bar Raised position 3. 4. Pin Hairpin cotter pin 4. To raise the roll bar, remove the hairpin cotter pins and remove the two pins (Figure 7).
Operating on wet grass or steep slopes can cause sliding and loss of control. This machine produces sound levels in excess of 85 dBA at the operators ear and can cause hearing loss through extended periods of exposure. Wheels dropping over edges can cause rollovers, which may result in serious injury, death or drowning. Wear hearing protection when operating this machine. There is no rollover protection when the roll bar is down.
Pulsing Audible Alarm The pulsing audible alarm alerts the user to low oil pressure or the alternator is not charging. Refer to Checking the Engine Oil and check the alternator belt. Operating the Parking Brake Always set the parking brake when you stop the machine or leave it unattended. Setting the Parking Brake Figure 11 1. Move the motion control levers (Figure 16) out to the neutral lock position. 1. 2. 2. Pull up and back on the parking brake lever to set the parking brake (Figure 11).
Figure 12 1. 2. 3. 4. 5. Ignition switch Throttle control Glow plug light Power take off (PTO) Switch Hour meter 6. 7. 8. 9. Fuel cap Volt meter Engine Temperature gauge Water in fuel light Figure 14 1. Throttle—fast Important: Use starting cycles of no more than 30 seconds per minute to avoid overheating the starter motor. 2. Throttle—slow Starting the Engine in Cold Weather (Below 14°F or -10°C) Use the correct engine oil for the starting temperature.
5. Remove the key to prevent possibility of someone accidentally starting the machine before transporting or storing machine. 6. Close the fuel selector valve before transporting or storing the machine. Important: Make sure that the fuel selector valve is closed before transporting or storing the machine, as fuel leakage may occur. Set the parking brake before transporting. Important: Make sure to remove the key as the fuel pump may run and cause the battery to lose charge. Figure 15 1.
engaged or if you rise from the seat when the PTO is engaged. Machine can spin very rapidly. Operator may lose control of machine and cause personal injury or damage to machine. Testing the Safety Interlock System Test the safety interlock system before you use the machine each time. If the safety system does not operate as described below, have an Authorized Service Dealer repair the safety system immediately. • Use caution when making turns. • Slow the machine down before making sharp turns.
Driving Backward 1. Move the levers to the center, un-locked position. 2. To go backward, slowly pull the motion control levers rearward (Figure 16). To go straight, apply equal pressure to both motion control levers (Figure 16). To turn, release pressure on the motion control lever toward the direction you want to turn (Figure 16). To stop, push the motion control levers to the neutral position. Figure 17 1.
3. After adjusting the height-of-cut, adjust the rollers by removing the flange nut, bushing, spacer, and bolt (Figure 19 , Figure 20 and Figure 21 ). Note: The two middle rollers will not have a spacer (Figure 20). 4. Select a hole so the anti-scalp roller is positioned to the nearest corresponding height-of-cut desired. 5. Install the flange nut bushing, spacer, and bolt. Torque to 40-45 ft-lb (54-61 N•m) (Figure 19 , Figure 20 and Figure 21 ). 6. Repeat this adjustment on the other anti-scalp rollers.
Positioning the Seat To adjust it, turn the knob, under the right-side arm rest, in either direction to provide the best comfort (Figure 23). Changing the Seat Position 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, move the lever sideways to unlock seat (Figure 22). Figure 23 1. 2. 2. Right-side arm rest Unlatching the Seat Figure 22 1.
Pushing the Machine by Hand Important: Always push the machine by hand. Never tow the machine because hydraulic damage may occur. Pushing the Machine 1. Disengage the power take off (PTO) and turn the ignition key to off. Move the levers to neutral locked position and apply parking brake. Remove the key. 2. Rotate the by-pass valves counterclockwise 1 turn to push. This allows hydraulic fluid to by-pass the pump enabling the wheels to turn (Figure 25).
Loading Machines Use extreme caution when loading units on trailers or trucks. One full width ramp that is wide enough to extend beyond the rear tires is recommended instead of individual ramps for each side of the unit (Figure 26). The lower rear section of the tractor frame extends back between the rear wheels and serves as a stop for tipping backward. Having a full width ramp provides a surface for the frame members to contact if the unit starts to tip backward.
Using the Z Stand® The Z Stand raises the front end of the machine to allow you to clean the mower and remove the blades. The machine could fall onto someone and cause serious injury or death. Figure 28 1. Z Stand (Positioned in slot) 3. 2. Crack in side walk or turf • Use extreme caution when operating the machine on the Z Stand. • Use only for cleaning the mower and removing the blades. Latch resting on pivot tab 4. Set the foot of stand on the ground and rest the latch on the pivot tab (Figure 28).
Mowing Direction Alternate mowing direction to keep the grass standing straight. This also helps disperse clippings which enhances decomposition and fertilization. Mow at Correct Intervals Normally, mow every four days. But remember, grass grows at different rates at different times. So to maintain the same cutting height, which is a good practice, mow more often in early spring. As the grass growth rate slows in mid summer, mow less frequently.
shredding turns grass brown at the edges, which slows growth and increases the chance of disease. Check the cutter blades daily for sharpness, and for any wear or damage. File down any nicks and sharpen the blades as necessary. If a blade is damaged or worn, replace it immediately with a genuine TORO replacement blade.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the rst 8 operating hours • Check cooling system level. • Adjust the drive belts. • Check the hydraulic uid. After the rst 25 operating hours • Change the hydraulic lter and oil. After the rst 50 operating hours • Change the engine oil. • Change the engine oil lter. Before each use or daily • • • • • • • Test the safety system. Check the engine oil. Check cooling system level.
If you leave the key in the ignition switch, someone could accidently start the engine and seriously injure you or other bystanders. Remove the key from the ignition and disconnect the wire from the spark plug(s) before you do any maintenance. Set the wire aside so that it does not accidentally contact the spark plug. Lubrication Where to Add Grease Greasing and Lubrication Lubricate the grease fittings as shown on the Check Service Reference Aid decal (Figure 30).
3. Remove the screws and belt covers. 4. Grease the three spindle bearings under the pulleys until grease comes out the lower seals (Figure 31). 5. Grease the idler arm on the mower deck (Figure 31). 6. Grease the fittings on the push arms (Figure 31). Figure 32 1. Left adjustable pulley 2. Back of the machine 3. Grease the pump belt idler arm. Figure 31 Where to Add Light Oil or Spray Lubrication Figure 33 Lubricate the machine in the following areas with spray type lubricant or light oil.
3. Tilt the seat forward and remove the front engine panel (Figure 34). Figure 35 1. Latches 2. Air cleaner cover 3. Air lter body Figure 34 1. Front engine panel 2. Nut 4. Release the latches on the air cleaner and pull the air cleaner cover off of the air cleaner body (Figure 35). 4. 5. Primary lter Safety lter Servicing the Primary Filter 1. Do not clean the paper filter. Replace it after 200 operating hours (Figure 35). 5. Clean the inside of the air cleaner cover with compressed air. 2.
Important: Do not press on the soft inside area of the filter. 4. Install the air cleaner cover with the side indicated as UP facing up and secure the latches (Figure 35). 5. Install the front engine panel. Important: Do not overfill the crankcase with oil because this may cause engine damage. Do not run the engine with oil below the low mark because the engine may be damaged as a result. Servicing the Engine Oil Change oil after the first 50 operating hours and then every 150 operating hours thereafter.
Note: Dispose of the used oil at a recycling center. Important: Add the oil very slowly and do not block the opening of the filler hole (Figure 40). If you add oil too fast or block the hole, the oil could back up and foul the air intakes, causing engine damage. Adding Engine Oil 1. Tilt the seat forward and remove the front engine panel (Figure 38). Figure 40 1. Note the clearance left in the ller opening. Figure 38 1. Front engine panel 2. 5. Replace the dipstick and install the front engine panel.
3. Before installing the filter, lightly oil the gasket on the filter with fresh, clean oil. Screw the filter on by hand until the gasket contacts the oil filter adapter. Tighten 1/2 to 3/4 turn more. 3. Disconnect the negative battery cable; Refer to Removing the Battery. 4. Allow the machine to cool down. 5. Place a drain pan under the fuel filter and loosen the drain plug 1 turn. 4. Add oil; refer to Adding Engine Oil. 6. Let the water drain.
Electrical System Maintenance Servicing the Battery Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. Do not drink electrolyte and avoid contact with skin, eyes or clothing. Wear safety glasses to shield your eyes and rubber gloves to protect your hands. Figure 43 1. Fuel lter 2. Sensor wire 3. Drain plug 4. 5.
Charging the Battery 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 3. Unlatch the seat and tilt the seat up. Charging the battery produces gasses that can explode. 4. First disconnect the negative battery cable from the negative (-) battery terminal (Figure 45). Never smoke near the battery and keep sparks and flames away from battery. 5. Slide the red terminal boot off the positive (red) battery terminal.
Drive System Maintenance Fuse: Main/Ignition -20 amp, blade-type Glow plug/Alternator -40 amp, blade-type 1. To gain access to the main fuse, unlatch the seat and tilt the seat forward. To gain access to the fan and alternator fuses, raise the seat and tilt the engine cover forward. Adjusting the Tracking The machine has a knob for adjusting the tracking located under the seat. 2. To replace a fuse, pull out on the fuse to remove it (Figure 47).
Checking the Tire Pressure 8. Tighten the nut until the next set of slots line up with the hole in the shaft (Figure 50). Check the pressure at the valve stem after every 50 operating hours or monthly, whichever occurs first (Figure 49). 9. Replace the cotter pin. Maintain the air pressure in the front and rear tires at 13 psi (90 kPa). Uneven tire pressure can cause uneven cut. Check the tires when they are cold to get the most accurate pressure reading. Figure 50 1. 2.
Rotating shaft and fan can cause personal injury. • Do not operate the machine without the covers in place. • Keep fingers, hands and clothing clear of rotating fan and drive shaft. • Shut off the engine and remove the ignition key before performing maintenance. Swallowing engine coolant can cause poisoning. • Do not swallow engine coolant. Figure 51 1. Spring Washers 2. Lock Nut 3. • Keep out of reach from children and pets. Dust Cap Checking the Radiator Coolant Check the cooling system level daily.
Contact an Authorized Service Dealer for changing the coolant. Brake Maintenance Adjusting the Parking Brake 1. Disengage the brake lever (lever down). 2. Measure the length of the spring. The measurement should be 2-3/4 inch (70 mm) between the washers (Figure 53). 3. If an adjustment is necessary, loosen the jam nut below the spring and tighten the nut directly below the yoke (Figure 53). Turn the nut until the correct measurement is obtained.
4. Remove the two drive belts from the two upper pulleys. Refer to Replacing the Drive Belts. 5. Pull on the spring loaded idler arm to loosen the belt tension. 6. Remove the mower belt from the mower pulleys and the bottom pulley of the three stacked pulleys (Figure 54 and Figure 55). 7. Install the new belt around the mower pulleys and the bottom pulley of the three stacked pulleys (Figure 54 and Figure 55). 8.
Figure 56 1. 4. Pull on the spring loaded idler pulley to loosen the belt tension (Figure 57). Figure 55 1. Three stack pulleys 2. Mower belt 3. 4. Rear engine panel 5. Remove the worn drive belt. Mower spindle pulley Mower idler pulley 6. Install the new drive belt around the clutch pulley, the adjustable idler pulleys, the spring loaded idler pulley, and the front three stacked pulleys (Figure 57). Replacing the Drive Belts 7. Adjust the belt tension; refer to Adjusting the Drive Belts.
2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. Note: Measure only the spring coils. 3. Measure the length of the spring. Check to make sure the coils of the spring on the spring-loaded idler pulley measures as listed below (Figure 58 and Figure 59). • Left spring measurement: 5-3/4 ± 1/8 inch (14.6 ± 0.3 cm) (Figure 58). • Right spring measurement: 5-1/2 ± 1/8 inch (14.0 ± 0.3 cm) (Figure 58). Figure 59 4.
Replacing and Tensioning the Alternator Belt 4. Check the deflection in the belt again and adjust the belt if needed. 5. If the deflection is correct, torque the upper bolt to 170 in-lb (19 N•m) and the bottom bolt to 45 ft-lb (61 N•m) (Figure 62). 6. Install the pump drive belt; refer to Replacing the Pump Drive Belt. 7. Install the front engine panel (Figure 61). Check the alternator belt for wear after every 50 hours of operation. Replacing the Alternator Belt 1.
3. Unlatch the seat and tilt the seat forward. 4. Begin with either the left or right motion control lever. 5. Move the lever to the neutral position but not locked (Figure 63). 6. Pull the lever back until the clevis pin (on arm below pivot shaft) contacts the end of the slot (just beginning to put pressure on the spring) (Figure 63). 7. Check where the control lever is relative to notch in console (Figure 63). It should be centered allowing lever to pivot outward to the neutral lock position. Figure 64 1.
2. Clean the area around filler neck of hydraulic tank (Figure 65). Hydraulic fluid escaping under pressure can penetrate skin and cause injury. 3. Remove the cap from the filler neck. Look inside to check if there is fluid in the reservoir (Figure 65). • If hydraulic fluid is injected into the skin it must be surgically removed within a few hours by a doctor familiar with this type of injury. Gangrene may result if this is not done. 4.
Replacing the Cooling Fan Hydraulic Filter Replace the cooling fan hydraulic filter: • After every 500 operating hours. • After any part of the hydraulic cooling fan system is repaired or replaced. 1. Place drain pan under filter, remove the hydraulic hose from the filter (Figure 68). Figure 66 1. Hydraulic lter 2. Remove the cooling fan hydraulic filter from the T-fitting on the bottom of the filter (Figure 68). 4. Apply a thin coat to the rubber gasket on the replacement filter (Figure 67). 5.
Checking the Hydraulic Hoses After every 100 operating hours, check the hydraulic hoses for leaks, loose fittings, kinked lines, loose mounting supports, wear, weather and chemical deterioration. Make necessary repairs before operating. Mechanical or hydraulic jacks may fail to support machine and cause a serious injury. • Use jack stand when supporting machine. Note: Keep areas around the hydraulic system clean from grass and debris build up. • Do not use hydraulic jacks.
Figure 69 1. Tracking knob 2. Hydraulic tank 3. Hydraulic pumps 4. 5. Turn this way to track right Turn this way to track left Figure 70 1. Double nuts 2. Pump rod 3. Adjustment bolt 3. Move the motion control lever forward and reverse, then back to neutral. The wheel must stop turning or slightly creep in reverse. 4. Open the throttle to fast. Make sure wheel remains stopped or slightly creeps in reverse, adjust if necessary. 4. 5. 6.
Setting Up the Machine 1. Position the mower on a flat surface. 2. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. 3. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 4. Check tire pressure of all four tires. If needed, adjust to 13 psi (90 kPa) 5. Lower the mower to the 3 inch (76 mm) height-of-cut position. 6. Inspect the four chains. The chains need to have tension.
4. Measure the right blade at the B location, from a level surface to the cutting edge of the blade tip (Figure 73). 5. Record this measurement. 6. The mower blade should be a 1/4 to 3/8 inch (6 to 10 mm) lower at position A than at position B (Figure 73). If it is not correct, proceed to the following steps. Note: Both of the front swivels need to be adjusted the same amount to maintain equal chain tension. 7.
Before Inspecting or Servicing the Blades Park the machine on a level surface, disengage the blade control (PTO), and set the parking brake. Turn the ignition key to Off. Remove the key. Inspecting the Blades 1. Inspect the cutting edges (Figure 75). If the edges are not sharp or have nicks, remove and sharpen the blades. Refer to Sharpening the Blades. 2. Inspect the blades, especially the curved area (Figure 75).
Contact with a sharp blade can cause serious injury. Wear gloves or wrap sharp edges of the blade with a rag. 1. Hold the blade end using a rag or thickly-padded glove. 2. Remove the blade bolt, spring disk and blade from the spindle shaft (Figure 79). Sharpening the Blades Figure 76 1. Measure here from blade to hard surface 2. When sharpening blade, pieces of blade could be thrown and cause serious injury. Position A Wear proper eye protection when sharpening blade. 4.
Cleaning Cleaning Under the Mower Figure 78 1. Blade 2. Remove the grass buildup under the mower daily. Balancer 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parking brake. Installing the Blades 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position. 1. Install the blade onto the spindle shaft (Figure 79). 3. Raise the mower to the transport position.
Storage A. Add a petroleum based stabilizer/conditioner to fuel in the tank. Follow mixing instructions from the stabilizer manufacturer. Do not use an alcohol based stabilizer (ethanol or methanol). Cleaning and Storage 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to Off. Remove the key. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine and hydraulic system.
Troubleshooting Problem Starter does not crank Possible Cause 1. Blade control (PTO) is engaged. 2. Parking brake is not on. 3. Operator is not seated. 4. Battery is dead. 5. Electrical connections are corroded or loose. 6. Fuse is blown. 7. Relay or switch is defective. Engine will not start, starts hard, or fails to keep running. 1. Fuel tank is empty. 2. Air cleaner is dirty. 3. Dirt in the fuel lter. 4. Dirt, water, or stale fuel is in the fuel system. Engine loses power. 1.
Problem Machine does not drive. Abnormal vibration. Possible Cause 1. By pass valve is not closed tight. 2. Drive or pump belt is worn, loose or broken. 3. Drive or pump belt is off a pulley. 4. Broken or missing idler spring. 5. Hydraulic uid level is low or too hot. 1. Tighten the by pass valve. 2. Change the belt. 1. Cutting blade(s) is/are bent or unbalanced. 2. Blade mounting bolt is loose. 3. Engine mounting bolts are loose. 4. Loose engine pulley, idler pulley, or blade pulley. 5.
Problem Blades do not rotate. Possible Cause 1. Drive belt is worn, loose or broken. 2. Drive belt is off pulley. 3. Deck belt is worn, loose or broken. 4. Deck belt is off pulley. 5. Broken or missing idler spring. 63 Corrective Action 1. Check the belt tension. 2. Install the drive belt and check adjusting shafts and belt guides for correct position. 3. Install a new deck belt. 4. Install the deck pulley and check the idler pulley, idler arm and spring for correct position and function. 5.
Schematics Wire Diagram (Rev.