Form No. 3326–714 Z255 Z–Master with 52 in. SFS Side Discharge Mower Model No. 74228—Serial No.
Warning Checking the Level of Mower Deck . . . . . . . . . . Checking the Engine Oil Level . . . . . . . . . . . . . . Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating the Parking Brake . . . . . . . . . . . . . . . . Starting and Stopping the Engine . . . . . . . . . . . . Operating the Power Take Off (PTO) . . . . . . . . .
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . Cleaning and Storage . . . . . . . . . . . . . . . . . . . . . . Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . The Toro Total Coverage Guarantee . . . . . . . . . . . . . Page 47 48 49 52 Danger signals an extreme hazard that will cause serious injury or death if the recommended precautions are not followed.
• The owner/user can prevent and is responsible for accidents or injuries occurring to himself or herself, other people or property. • Do not change the engine governor setting or overspeed the engine. • Stop on level ground, lower implements, disengage drives, engage parking brake (if provided), shut off engine before leaving the operator’s position for any reason including emptying the catchers or unclogging the chute.
• Disconnect battery or remove spark plug wire before making any repairs. Disconnect the negative terminal first and the positive last. Reconnect positive first and negative last. • Stop the engine before removing the grass catcher or unclogging the chute. • Use care when checking blades. Wrap the blade(s) or wear gloves, and use caution when servicing them. Only replace blades. Never straighten or weld them. • Watch for traffic when operating near or crossing roadways.
• Check carefully for overhead clearances (i.e. branches, doorways, electrical wires) before driving under any objects and do not contact them. DO NOT • Do not mow slopes exceeding 15 degrees. • Avoid turning on slopes. If you must turn, turn slowly and gradually downhill, if possible. • Do not mow near drop-offs, ditches, or embankments. The machine could suddenly turn over if a wheel goes over the edge of a cliff or ditch, or if an edge caves in. • Do not mow on wet grass.
Slope Chart 7
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.
1-633818 54-9220 98-3798 98-4387 66-1340 1. Warning—wear hearing protection.
104-4163 103–0262 1. Explosion hazard 2. No fire, open flames, or smoking. 3. Caustic liquid/chemical burn hazard 4. Wear eye protection 5. Read the Operator’s Manual. 6. Keep bystanders a safe distance from the battery. 93-7818 104-7759 1. Warning—read the Operator’s Manual for instructions on torquing the blade bolt/nut to 115–149 N⋅m (85–110 ft.-lb.). 104-8172 104-8569 99-4632 1. Engine—stop 2. Engine—run 3.
104-4164 1. Contains lead; do not discard. 2. Recycle 3. Wear eye protection; explosive gases can cause blindness and other injuries 4. No sparks, flame, or smoking 5. Sulfuric acid can cause blindness or severe burns. 6. Flush eyes immediately with water and get medical help fast. 103-2433 100-4311 12 7. Maximum fill line 8. Minimum fill line 9.
Gasoline and Oil Warning Gasoline is harmful or fatal if swallowed. Long–term exposure to vapors can cause serious injury and illness. 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. • Avoid prolonged breathing of vapors. • Keep face away from nozzle and gas tank or conditioner opening. • Keep gas away from eyes and skin.
Setup Loose Parts Note: Use the chart below to verify all parts have been shipped. DESCRIPTION QTY. Rear Wheels 2 Retaining rod 1 Bolt, 5/16 x 1 in. 1 Locknut, 5/16 in. 1 Control lever—right 1 Control lever—left 1 Bolt, 3/8 x 1 in. 4 Spring washer, 3/8 in.
3. Place the seat retaining rod to the outside of the mounting tab of the seat frame and secure with one bolt (5/16 x 1 in.) and locknut (5/16 in.) (Fig. 3). 4. Tighten until snug, then loosen so the rod pivots freely. 2 1 1 4 2 5 6 3 m–5596 Figure 4 1. Mounting plate 2. Bolt, 3/8 x 1 in. 3. Spring washer, 3/8 in. 3 5.
Danger Warning Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. Charging battery produces gasses that can explode and cause serious injury. • Do not drink electrolyte and avoid contact with skin, eyes or clothing. Wear safety glasses to shield your eyes and robber gloves to protect your hands. • Fill the battery where clean water is always available for flushing the skin.
Checking the Side Discharge Chute Operation Remove plastic tie holding side discharge chute up and lower into place. Think Safety First Carefully read all the safety instructions and decals in the safety section. Knowing this information could help you, your family, pets or bystanders avoid injury. Checking the Level of Mower Deck The use of protective equipment for eyes, ears, feet and head is recommended. Check the level of the deck before the machine is first put in use.
Switching Fuel Tanks 3 2 1 6 8 The unit has two fuel tanks, located on the left and right sides. Each tank connects to the fuel shut off valve in the control panel. From there a common fuel line leads to the engine (Fig. 11). 7 To use the right side fuel tank rotate the fuel shut off valve 1/4 turn to the right from the off location. This uses fuel from the right side tank only. When the right hand fuel tank is empty, move the fuel shut off valve 1/4 turn to the left from the off position.
Releasing the Parking Brake 7. After the engine starts, move the choke to off (Fig. 14). If the engine stalls or hesitates, move the choke back to on for a few seconds. Then move the throttle lever to desired setting. Repeat this as required. 1. Push forward and down on the parking brake lever to release the parking brake (Fig. 12). The parking brake is disengaged and the lever rests against the brake stop. 2 1 1 2 2 1 m–4201 m–2719 Figure 13 Figure 14 1. PTO-On 2. PTO-Off 3 1. Choke–On 2.
Understanding the Safety Interlock System Important Make sure fuel shut off valve is closed before transporting or storing machine, as fuel leakage may occur. Set parking brake before transporting. The safety interlock system is designed to prevent the engine from starting unless: Operating the Power Take Off (PTO) • You are sitting on the seat. • The parking brake is engaged. The power take off (PTO) switch engages and disengages power to the electric clutch. • The power take off (PTO) is disengaged.
Driving Backward Caution 1. Move levers to the center, un-locked position. Machine can spin very rapidly. Operator may lose control of machine and cause personal injury or damage to machine. 2. To go backward, slowly pull the motion control levers rearward (Fig. 18). To go straight, apply equal pressure to both motion control levers (Fig. 18). • Use caution when making turns. • Slow the machine down before making sharp turns.
1 2 3 1 4 3 2 M–4164 5 Figure 19 1. Height of cut lever 2. Clevis Pin m–4161 3. Hairpin Cotter Figure 20 1. Gage Wheel 2. Stud 3. Spring Disk Adjusting the Anti-Scalp Rollers 4. Flange Nut 5. Wheel nut and washer. Do Not Remove. Positioning the Seat Whenever you change the height-of-cut it is recommended to adjust the height of the anti-scalp rollers. 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 Push the Machine Transporting Machines 1. Disengage the power take off (PTO) and turn the ignition key to off. Move levers to neutral locked position and apply parking brake. Use a heavy–duty trailer or truck to transport the machine. Ensure that the trailer or truck has all necessary lighting and marking as required by law. Please carefully read all the safety instructions in the safety section. Knowing this information could help you, your family, pets or bystanders avoid injury. 2.
Avoid sudden acceleration when driving up a ramp and sudden deceleration when backing down a ramp. Both maneuvers can cause the unit to tip backward. 4 Warning Loading a unit onto a trailer or truck increases the possibility of backward tip–over and could cause serious injury or death. 2 5 1 • Use extreme caution when operating a unit on a ramp. • Use only a single, full width ramp; Do Not use individual ramps for each side of the unit.
8. Perform maintenance. Mowing Direction 9. Remove chocks or blocks. Alternate mowing direction to keep the grass standing straight. This also helps disperse clippings which enhances decomposition and fertilization. Driving off the Z Stand 1. Raise latch to unlocked position (Fig. 25). Mow at Correct Intervals 2. Start engine and place at half throttle. Disengage parking brake. Normally, mow every four days. But remember, grass grows at different rates at different times.
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.
Caution 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. Servicing the Cutting Blades Maintain sharp blades throughout the cutting season because sharp blades cut cleanly without tearing or shredding the grass blades.
Sharpening the Blades Warning MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE When sharpening blade, pieces of blade could be thrown and cause serious injury. m–2539 Wear proper eye protection when sharpening blade. Figure 28 2. Rotate the opposite ends of the blades forward. 1. Use a file to sharpen the cutting edge at both ends of the blade (Fig. 29). Maintain the original angle. The blade retains its balance if the same amount of material is removed from both cutting edges. 3.
3 3 5 4 4 1 2 1 3 4 5 M–4226 2 1 Figure 31 1. Sail Area of Blade 2. Blade 3. Spring Disk 4. Blade Bolt 5. Cone Towards Bolt Head m–4815 Figure 32 1. Latches 2. Air cleaner cover 3. Air filter body 4. Primary filter 5. Safety filter Servicing the Air Cleaner Cleaning the Primary Filter Primary Filter: Clean or replace after every 200 operating hours. Blow compressed air from the inside to the outside of the primary filter. Safety Filter: Replace after every 600 operating hours.
1 Servicing the Engine Oil 3 2 Change oil: • After the first 8 operating hours. • After every 100 operating hours. Note: Change oil more frequently when operating conditions are extremely dusty or sandy. Oil Type: Detergent oil (API service SG or SH) m–3217 Crankcase Capacity: w/filter, 67 oz. (2.0 l) Figure 33 Viscosity: See table below 1. Oil dipstick 2. Filler tube USE THESE SAE VISCOSITY OILS 10W–30, 10W–40 0 –30 5C –20 20 –10 3. Metal end Changing the Oil 1.
Changing the Oil Filter Removing the Spark Plug(s) Replace the oil filter every 200 hours or every other oil change. 1. Disengage the power take off (PTO) and turn the ignition key to off. Move levers to neutral locked position and apply parking brake. Remove the key. Note: Change oil filter more frequently when operating conditions are extremely dusty or sandy. 2. Pull the wire(s) off the spark plug(s) (Fig. 36).
2 3 1 0.030 in. (0.76 mm) 1 2 m–3215 m–3217 Figure 37 1. Center electrode insulator 2. Side electrode Figure 38 3. Air gap (not to scale) 1. Filter 2. Hose clamp Installing the Spark Plug(s) Servicing the Fuel Tank 1. Install the spark plug(s). Make sure the air gap is set correctly. Draining The Fuel Tank 2. Tighten the spark plug(s) to 20 ft-lb (27 N.m). Danger 3. Push the wire(s) onto the spark plug(s) (Fig. 36). In certain conditions, gasoline is extremely flammable and highly explosive.
Where to Add Grease 5. Install the fuel line onto the fuel filter. Slide the hose clamp close to the fuel filter to secure the fuel line (Fig. 39). Lubricate the grease fittings as shown on the Check Service Reference Aid decal (Fig. 40). 3 1 4 m–3717 2 Figure 39 1. Fuel shut-off valve 2. Fuel filter 3. Hose clamp 4. Fuel line Figure 40 Greasing and Lubrication Lubricate the machine when shown on the Check Service Reference Aid decal (Fig. 40).
3 1 2 m–5766 Figure 43 1. Panel 2. Engine shroud 3. Screws M–5035 Checking the Tire Pressure Figure 41 Maintain the air pressure in the front and rear tires as specified. Uneven tire pressure can cause uneven cut. Check the pressure at the valve stem after every 50 operating hours or monthly, whichever occurs first (Fig. 44). Check the tires when they are cold to get the most accurate pressure reading.
6. Torque the slotted nut to 125 ft–lbs (169.5 N m) (Fig. 45). 3 2 7. Tighten nut until the next set of slots line up with the hole in the shaft (Fig. 45). 1 8. Replace cotter pin. 1 4 M–4640 3 Figure 46 2 1. Spring Washers 2. Lock Nut Servicing the Hydraulic System m–4638 Figure 45 1. Slotted Nut 2. Two threads or less showing 3. Dust Cap 3. Hole in threaded rod 4. Washer (if needed) Checking the Hydraulic Fluid Check the hydraulic fluid level before engine is first started.
Replacing the Hydraulic Filter 5. Run the machine at low idle for 15 minutes to allow any air to purge out of the system and warm fluid. Refer to Starting and Stopping the Engine on page 19. Change the hydraulic filter: • After the first 8 operating hours. 6. Recheck the fluid level while the fluid is warm. If required, add fluid to the reservoir until it reaches the hot level of the baffle. • After every 200 operating hours. 1. Disengage the power take off (PTO) and turn the ignition key to off.
11. Recheck level while fluid is warm. Add fluid to raise level to top of the baffle, if required. Do not overfill. 1 Warning Hydraulic fluid escaping under pressure can penetrate skin and cause injury. 3 • 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. • Keep body and hands away from pin hole leaks or nozzles that eject high pressure hydraulic fluid.
will keep the pin at the end of the slot and allow the adjustment bolt to move the lever to the appropriate position). Warning Engine must be running so motion control adjustment can be performed. Contact with moving parts or hot surfaces may cause personal injury. 6. Tighten nut and jam nut. 7. Repeat on opposite side of unit. 4 1 Keep hands, feet, face, clothing and other body parts away from rotating parts, muffler and other hot surfaces. 2.
Replacing the Pump Drive Belt 4 5 Check pump drive belt for wear after every 50 hours of operation. 6 1. Pull spring loaded idler down and remove traction belt from the engine and hydro pump pulleys (Fig. 51). Remove belt between pulleys. 1 2. Install new belt around engine and hydro pump pulleys (Fig. 51). 2 3. Pull spring loaded idler down and align below traction belt. Release pressure on spring loaded idler (Fig. 51). m–3788 3 Figure 52 1. Brake lever 2. Spring, 2.75 in. (70 mm) 3.
Servicing the Battery Danger Warning Battery electrolyte contains sulfuric acid which is a deadly poison and causes severe burns. Battery posts, terminals, and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. • Do not drink electrolyte and avoid contact with skin, eyes or clothing. Wear safety glasses to shield your eyes and robber gloves to protect your hands.
9 5 4 11 Warning 2 Incorrect battery cable routing could damage the machine and cables causing sparks. Sparks can cause the battery gasses to explode, resulting in personal injury. 7 6 7 • Always Disconnect the negative (black) battery cable before disconnecting the positive (red) cable. • Always Reconnect the positive (red) battery cable before reconnecting the negative (black) cable . 3 8 10 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to off.
Charging the Battery Leveling the Mower 1. Position mower on a flat surface. Stop the engine, set the parking brake, remove the key and disconnect the spark plug wire(s) from the spark plug(s). Warning Charging the battery produces gasses that can explode. 2. Check tire pressure of all four tires. If needed, adjust to 13 psi (90 kPa) Never smoke near the battery and keep sparks and flames away from battery. 3. Set anti–scalp rollers to top holes or remove them completely for this adjustment. 4.
2. Raise deck to the transport position. Note: When properly adjusted, the front blade tip will be slightly lower than the rear blade tip. See Checking for Bent Blades on page 27 to measure. 3. Raise front of machine by using the Z Stand. Refer to Z Stand operation on page 24. Warning 1 Unit could fall onto someone and cause serious injury or death. 3 4 2 • Use extreme caution when operating unit on Z–Stand. • Use only for cleaning deck and removing blades.
4 1 6 6 4 5 7 m–4451 2 3 2 3 1 M–4373 M–4312 Figure 59 Figure 60 Top View 1. Deck Belt 2. Idler Arm 1. 2. 3. 4. 3. Idler nuts 4. Idler adjusting nut 6. Reinstall the PTO drive belt. Refer to Replacing the PTO Drive Belt, page 44. Clutch Clutch retaining strap clutch Terminal PTO belt 5. Machine Frame 6. 1/4’ Belt Twist 7. 1/8 in. Belt Twist 6. Check belt tension. The center bolt of spring loaded idler must be between the two alignment holes in left support plate (Fig 61).
7. If adjustment is required, loosen the fixed idler on right support plate and move up or down in adjustment slot. To relieve belt tension lift up on spring loaded idler. 1 3 1 1 2 2 m–3740 Figure 63 1. Push arm 2. 15–5/16 in. (389 mm) nominal 3. Jam nut 4. Ball joint m–3746 11. Rotate the belt guide, on rear of the mower, so it is 1/8–1/4 in. (3–7 mm) away from the vertical side of the PTO belt (Fig. 64). Figure 62 1. Fixed Idler 2. Adjustment slot 8. Check belt tension again.
Replacing the Grass Deflector Mercury Tilt Switch The tilt switch on this unit contains mercury, a hazardous material. Mercury that is outside a sealed container vaporizes at room temperature. The vapors are harmful. Mercury can be absorbed through the skin. Do not attempt to open or repair this switch. Warning An uncovered discharge opening could allow the lawn mower to throw objects in the operator’s or bystander’s direction and result in serious injury. Also, contact with the blade could occur.
BK BK BN GND PTO CLUTCH VIO (NEUTRAL) SW5 W VIO Y SHOWN WITH LEVER IN NEUTRAL POSITION SHOWN WITH LEVER IN NEUTRAL POSITION Y SHOWN IN OFF POSITION GY SW4 (NEUTRAL) SHOWN WITH PARK BRAKE DISENGAGED SW3 (BRAKE) BN SW2 (PTO) OR BK P1–B T K2 (START RELAY) P2–C Y SW6 (SEAT SW) SHOWN WITH OPERATOR IN SEAT SW7 (TILT SW) SWITCH OPENS WHEN TILTED PAST 60 DEGREES FROM VERTICAL P1–A DELAY MODULE 100–6186 P1–C PK B KEY SW S I TERMINAL VIEW FROM BACK OF SWITCH A Y X NO CONNECTION B
Cleaning and Storage A. Add a petroleum based stabilizer/conditioner to fuel in the tank. Follow mixing instructions from stabilizer manufacture. Do not use an alcohol based stabilizer (ethanol or methanol). 1. Disengage the power take off (PTO), set the parking brake and turn the ignition key to off. Remove spark plug wire. Remove the key. Note: A fuel stabilizer/conditioner is most effective when mixed with fresh gasoline and used at all times. 2.
Troubleshooting Problem Starter does not crank Engine g will not start,, starts hard,, or f il to fails t keep k running. i Engine g loses power. Engine g overheats. Possible Causes Corrective Action 1. Blade control (PTO) is engaged. 1. Move blade control (PTO) to disengaged. 2. Parking brake is not on. 2. Set parking brake. 3. Operator is not seated. 3. Sit on the seat. 4. Battery is dead. 4. Charge the battery. 5. Electrical connections are corroded or loose. 5.
Problem Machine does not drive. Abnormal vibration. Uneven cutting g height. g Blades do not rotate. Possible Causes Corrective Action 1. Traction belt is worn, loose or broken. 1. Contact Authorized Service Dealer. 2. Traction belt is off pulley. 2. Contact Authorized Service Dealer. 3. Hydro fluid level low. 3. Add hydro fluid to reservoir. 1. Cutting blade(s) is/are bent or unbalanced. 1. Install new cutting blade(s). 2. Blade mounting bolt is loose. 2. Tighten blade mounting bolt. 3.
The Toro Total Coverage Guarantee LCE A One-Year Limited Warranty Conditions and Products Covered Owner Responsibilities The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly promise to repair any Toro Product used for commercial, institutional, or rental purposes if defective in materials or workmanship.
