Toro 38903 - Manuals

Attachments and Accessories For 21773 55cm Recycler Lawn Mower with SmartStow Product Name Model/Part 22 Inch Atomic Blade .......................................................................................................................... 59534P Lawnmower Cover...................................

• Allow the engine to cool before storing in anyenclosure. • To reduce the fire hazard, keep the engine, silencer,battery compartment and fuel storage area free ofgrass, leaves, or excessive grease. • Check the grass catcher frequently for wear ordeterioration. • Replace worn or damaged parts for sa...

110-0820 1. Fast 5. Warning—read the Operator’s Manual . 2. Slow 6. Poison and caustic liquid/chemical burn hazard—keepchildren a safe distance from the battery. 3. Neutral 7. Explosion hazard—no fire, open flames, or smoking; avoidsparks. 4. Reverse 8. To unlock the traction drive, turn the by-pass...

Temperature Light The temperature light comes on when the engine is overheating (Figure 4). Audible Alarm This machine has an audible alarm that alerts the userto turn off the engine or engine damage can occur fromover heating. Refer to Servicing the Cooling System inCooling System Maintenance , pag...

In certain conditions, fuel is extremelyflammable and highly explosive. A fire orexplosion from fuel can burn you and othersand can damage property. • Fill the fuel tank outdoors, in an open area,when the engine is cold. Wipe up any fuelthat spills. • Never fill the fuel tank inside an enclosedtrail...

Figure 5 1. Left side fuel tank 2. Fuel selector valve Using the Rollover ProtectionSystem (ROPS) To avoid injury or death from rollover: keep theroll bar in the raised locked position and usethe seat belt. Ensure that the rear part of the seat is securedwith the seat latch. There is no rollover pro...

Important: Always use the seat belt with the roll bar in the raised position. G004955 1 2 3 4 Figure 7 1. Roll bar 3. Pin 2. Raised position 4. Hairpin cotter pin Think Safety First Please read all safety instructions and symbols in thesafety section. Knowing this information could helpyou or bystan...

This machine produces sound levels in excessof 85 dBA at the operators ear and can causehearing loss through extended periods ofexposure. Wear hearing protection when operating thismachine. Wear protective equipment for your eyes, ears, feet, andhead when using this machine. Figure 9 1. Warning— wea...

Figure 11 1. Hour meter 6. Throttle control 2. Ignition switch 7. PTO Switch 3. Glow plug switch 8. Audible alarm 4. Glow plug light 9. Fuel selector valve 5. Engine Temperature light 9. Turn the key to the start position and the glow plug indicator light will come back on. When the enginestarts, re...

4. Turn the ignition key to the off position (Figure 12). Wait for all moving parts to stop before leaving theoperating position. 5. Remove the key to prevent possibility of someone accidentally starting the machine before transportingor storing machine. 6. Close the fuel selector valve before trans...

Testing the Safety Interlock System Test the safety interlock system before you use themachine each time. If the safety system does notoperate as described below, have an Authorized ServiceDealer repair the safety system immediately. 1. Sitting on the seat, engage the parking brake and move the PTO ...

To turn, release pressure on the motion control levertoward the direction you want to turn (Figure 15). To stop, push the motion control levers to theneutral position. Stopping the Machine To stop the machine, move the traction control leversto neutral and move to locked position, disengage thepower...

Figure 17 1. Anti-scalp roller 4. Flange Nut 2. Spacer 5. Bolt 3. Bushing Figure 18 1. Anti-scalp roller 4. Flange Nut 2. Spacer 5. Bolt 3. Bushing Positioning the Seat Changing the Seat Position The seat can move forward and backward. Position theseat where you have the best control of the machinea...

Figure 20 1. Back rest knob 2. Rightside arm rest Unlatching the Seat Push the seat latch rearward to unlatch the seat.This will allow access to the machine under the seat(Figure 21). Figure 21 1. Seat latch 3. Seat 2. Fuel cap Pushing the Machine by Hand Important: Always push the machine by hand. ...

Driving on the street or roadway without turnsignals, lights, reflective markings, or a slowmoving vehicle emblem is dangerous and canlead to accidents causing personal injury. Do not drive machine on a public street orroadway. Loading Machines Use extreme caution when loading units on trailers ortr...

Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 8 hours • Check the hydraulic fluid level. After the first 25 hours • Change the hydraulic filter and oil. After the first 50 hours • Change the engine oil.• Change the engine oil filte...

If you leave the key in the ignition switch, someone could accidently start the engine and seriouslyinjure you or other bystanders. Remove the key from the ignition and disconnect the wire from the spark plug(s) before you do anymaintenance. Set the wire aside so that it does not accidentally contac...

1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parkingbrake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operatingposition. 3. Remove the belt covers. 4. Grease the three spindle bearings under the pull...

Figure 27 1. Air filter body 3. Air cleaner cover 2. Air filter 4. Latches Installing the Air Filter 1. If installing a new filter, check the filter for shipping damage. Do not use a damaged filter. 2. Carefully slide the filter into the filter body (Figure 28). Ensure that it is fully seated by pus...

Figure 29 Checking the Engine Oil Level Note: Check the oil when the engine is cold. 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parkingbrake. 2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operatingpos...

Figure 31 1. Back of machine 2. Drain plug Adding Engine Oil 1. Tilt the seat forward, loosen the bolts and remove the front engine panel (Figure 32). Figure 32 1. Bolt 2. Front engine panel 2. Remove the oil filler cap and the dipstick (Figure 33). Figure 33 1. Engine 2. Oil fill cap 3. To add oil ...

Figure 35 1. Note the clearance left in the filler opening. 5. Replace the dipstick and install the front engine panel. 6. Start the engine and run it at idle for 5 minutes. 7. Shut off the engine. 8. Wait 3 minutes and check the oil level. 9. Add oil, if required, to bring the level to the upper ho...

Fuel SystemMaintenance Servicing the Fuel Filters Replace the fuel filters after every 400 operating hoursor yearly, whichever occurs first, and replace them morefrequently under extremely dusty or dirty conditions. Replacing the Fuel Filter Ensure that an Authorized Service Dealer replaces thefuel ...

Incorrect battery cable routing could damagethe machine and cables causing sparks. Sparkscan cause the battery gasses to explode,resulting in personal injury. • Always Disconnect the negative (black)battery cable before disconnecting thepositive (red) cable. • Always Reconnect the positive (red) bat...

Important: Always keep the battery fully charged (1.265 specific gravity). This is especially importantto prevent battery damage when the temperature isbelow 32°F (0°C). 1. Make sure the filler caps are installed in battery. Charge battery for 10 to 15 minutes at 25 to 30 ampsor 30 minutes at 10 amp...

Drive SystemMaintenance Adjusting the Tracking The machine has a knob for adjusting the trackinglocated under the seat. Important: Adjust the handle neutral and hydraulic pump neutral before adjusting the tracking. Referto Adjusting the Handle Neutral in Controls SystemMaintenance , page 46 and Adju...

Checking the Wheel HubSlotted Nut Check after every 500 operating hours. The slotted nut needs to be torqued to 125 ft-lb(170 N•m). 1. Disengage the PTO, move the motion control levers to the neutral locked position and set the parkingbrake. 2. Stop the engine, remove the key, and wait for all movin...

Figure 46 1. Gear box 3. Rear plug 2. Side plug 4. Pulley Changing the Gear Box Oil Contact an Authorized Service Dealer to change thegear box oil. Cooling SystemMaintenance Servicing the Cooling System Discharge of hot pressurized coolant ortouching hot radiator and surrounding partscan cause sever...

1. Position the machine on a level surface, stop the engine, and set the parking brake. 2. Unlatch the seat and tilt the seat up. 3. With the engine cool, check the overflow bottle level. The fluid needs to be up to the bump on the outsideof the overflow bottle (Figure 47). 4. If the coolant level i...

Brake Maintenance Adjusting the Parking Brake 1. Engage the parking brake, lever up. 2. Measure the length of the spring. Measurement should be 2-1/2 inch (64 mm) between the washers(Figure 49). 3. If adjustment is necessary, release the parking brake, loosen the jam nut below the spring and adjust ...

Figure 51 1. Ratchet with shortextension or breakerbar 3. Spring-loaded idler pulley 2. 6–1/2 inches (16.5 cm )between the spring hooks 4. Fixed Idler pulley 10. While holding the belt in tension, tighten the 2 bolts that secure the fixed idler arm. 11. Remove the ratchet or breaker bar from the squ...

Figure 54 1. PTO Drive belt 4. Spring loaded idler pulley 2. Clutch 5. Gear box 3. Spring 6. Clutch stop bracket Replacing the Pump Drive Belt Check pump drive belt for wear after every 50 hoursof operation. Note: Remove the PTO drive belt first if the pump drive belt needs to be replaced. 1. Tilt t...

Figure 56 1. Oil cooler shield 3. Engine straps 2. Bolts 5. Remove the 4 bolts holding the oil cooler and position the oil cooler to the side (Figure 57). 6. Remove the 2 bolts holding the fan and fan plate to the machine (Figure 57). Figure 57 1. Oil cooler 3. Fan plate 2. Fan 4. Alternator belt 7....

Hydraulic SystemMaintenance Servicing the HydraulicSystem Checking the Hydraulic Fluid Level Fluid Type: Mobil 1 15W-50 synthetic motor oil orequivalent synthetic oil. Important: Use oil specified or equivalent. Other fluids could cause system damage. Hydraulic System Oil Capacity: 132 ounces (3.9 l...

2. Stop the engine, remove the key, and wait for all moving parts to stop before leaving the operatingposition. Important: Do not substitute automotive oil filter or severe hydraulic system damage mayresult. 3. Place drain pan under filter, remove the old filter and wipe the filter adapter gasket su...

Checking the Hydraulic Hoses After every 100 operating hours, check the hydraulichoses for leaks, loose fittings, kinked lines, loosemounting supports, wear, weather and chemicaldeterioration. Make necessary repairs before operating. Note: Keep areas around the hydraulic system clean from grass and ...

Mower DeckMaintenance Leveling the Mower at ThreePositions Important: There are only three measuring positions needed to level the mower. 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 pa...

Adjusting the Front-to-Rear MowerPitch 1. Position the right blade front-to-rear (Figure 69). 2. Measure the right blade at the A location, from a level surface to the cutting edge of the blade tip(Figure 69). Figure 69 1. Measure here from bladeto hard surface 2. Measure at A and B 3. Record this m...

A worn or damaged blade can break, and apiece of the blade could be thrown into theoperator’s or bystander’s area, resulting inserious personal injury or death. • Inspect the blade periodically for wear ordamage. • Replace a worn or damaged blade. Inspect and check the blades every 8 hours. Before I...

Figure 72 1. Measure here from bladeto hard surface 2. Position A 4. Rotate the opposite ends of the blades forward. 5. Measure from a level surface to the cutting edge of the blades at the same position as in step 3 above.The difference between the dimensions obtained insteps 3 and 4 must not excee...

Installing the Blades 1. Install the blade onto the spindle shaft (Figure 75). Important: The curved part of the blade must be pointing upward toward the inside of themower to ensure proper cutting. 2. Install the spring disk and blade bolt. The spring disk cone must be installed toward the bolt hea...

Storage Cleaning and Storage 1. Disengage the power take off (PTO), set the parking brake, and turn the ignition key to Off. Remove thekey. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially theengine and hydraulic system. Clean dirt and chafffrom th...

Troubleshooting Problem Possible Cause Corrective Action 1. The blade control (PTO) is engaged. 1. Move the blade control (PTO) to the disengaged position. 2. The parking brake is not on. 2. Set the parking brake. 3. The operator is not seated. 3. Sit on the seat. 4. The battery is dead. 4. Charge t...