Form No. 3326–491 Mid–Size Mower ProLine Hydro 17 HP with 52 in. Side Discharge Mower Model No.
Warning Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting and Stopping the Engine . . . . . . . . . . . . Operating Mower Blade Control (PTO) . . . . . . . The Safety Interlock System . . . . . . . . . . . . . . . . Driving Forward or Backward . . . . . . . . . . . . . . . Using Neutral Position . . . . . . . . . . . . . . . . . . . . . Stopping the Machine . . . . . . . . . . . . . . . . . . . . .
Introduction Safety Read this manual carefully to learn how to operate and maintain your product properly. The information in this manual can help you and others avoid injury and product damage. Although Toro designs and produces safe products, you are responsible for operating the product properly and safely. Note: The addition of attachments made by other manufacturers that do not meet American National Standards Institute certification will cause noncompliance of this machine.
• Do not operate the mower under the influence of alcohol or drugs • Never remove gas cap or add fuel with engine running. Allow engine to cool before refueling. Do not smoke. • Use care when loading or unloading the machine into or from a trailer or truck • Never refuel or drain the machine indoors. • Use care when approaching blind corners, shrubs, trees, or other objects that may obscure vision.
This product is capable of amputating hands and feet and throwing objects. Always follow all safety instructions to avoid serious injury or death. • Use extra care with grass catchers or other attachments. These can change the stability of the machine. This product is designed for cutting and recycling grass or, when equipped with a grass bagger, for catching cut grass. Any use for purposes other than these could prove dangerous to user and bystanders. • Keep all movement on slopes slow and gradual.
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.
98–4387 54–9220 95–1543 95–1523 104–8569 1–523552 105–0840 98–0776 10
95–5862 104–8172 104–8186 104–8173 104–4163 104–4164 11
104–8171 95–1544 104–8178 12
Gasoline and Oil Recommended Gasoline Warning Use UNLEADED Regular Gasoline suitable for automotive use (85 pump octane minimum). Leaded regular gasoline may be used if unleaded regular is not available. Gasoline is harmful or fatal if swallowed. Long–term exposure to vapors can cause serious injury and illness. 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 QTY. USE Fuel tank 1 Bolt 5/16 x 7/8 in. (22 mm) 2 Lock washer 5/16 in. 2 Washer 5/16 in. 4 Stud 2 Spring 2 Hose clamp 1 Upper handle 1 Flanged bolt 3/8 x 1 in. (26 mm) 4 Flange nut 3/8 in.
2 8 1 7 4 6 5 4 3 3 3 7 5 5 8 6 6 m–5339 m–5336 Figure 2 1. Bolt, 5/8 x 7/8 in. (22.5 mm) 2. Lock washer, 5/16 in. 3. Washer, 5/16 in. 4. Stud 5. 6. 7. 8. Figure 3 Spring Locknut Hose clamp Fuel tank connection 1. 2. 3. 4. 3. Slide the hose clamp onto the fuel line (Fig. 2). Upper handle Rear frame Flange bolt, 3/8 x 1 in. Flange nut, 3/8 in. 5. 6. 7. 8. Upper mounting hole Lower mounting hole Low position High position Installing Control Rods 4.
3. Press and hold upper control bars against reference bar, so stop hits. 1 4. Push rod full forward until bearing is against control bracket stop. Loosen wing nut and thread turnbuckle in or out until rod aligns with holes in upper control bars (Fig. 6). 3 2 4 5. When rod and holes in upper control bars line up, rotate turnbuckle one additional turn, so rod is shorter. Note: Upper control bar stop must hit reference bar before roller bearing hits control bracket stop. m–5264 6.
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.
2. Clean area around filler neck of hydraulic tank (Fig. 9). Warning 3. Remove cap from filler neck. Look inside to check if there is fluid in the reservoir (Fig. 9). Hydraulic fluid escaping under pressure can penetrate skin and cause injury. 4. If there is no fluid, add fluid to reservoir approximately a 1/4 in. (6mm) below the top of baffle. • 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.
Think Safety First Fuel Shut–off Valve – (Under fuel tank) Close fuel shut–off valve when transporting or storing mower. 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. Hour Meter – Shows total hours that machine has been operated. This operates only when the mower blades are operating. The use of protective equipment for eyes, hearing, feet, hands and head is recommended.
Operating Mower Blade Control (PTO) 1. Make sure spark plug wire(s) are installed on spark plug(s) and fuel valve is open. 2. Move the throttle control to choke position before starting a cold engine (Fig. 13). The blade control switch (PTO) in conjunction with the blade control bail engages and disengages power to the electric clutch and mower blades. Note: A warm or hot engine may not require choking. After engine starts, move choke control to run position. 3. Turn ignition key to start.
The Safety Interlock System Driving Forward or Backward The Enhanced T–Bar control system is designed to provide easy and comfortable operation of the hydrostatic drive. The control regulates ground speed, as well as forward, reverse and neutral functions, as well as steering direction. Caution If safety interlock switches are disconnected or damaged the machine could operate unexpectedly causing personal injury. The throttle control regulates the engine speed as measured in rpm (revolutions per minute).
1 3. Turn the ignition key to off. Remember to remove the key from the ignition switch. 2 Important If the machine is on a slope, chock or block the wheels to prevent the machine from slowly rolling. Important If the machine will be left unattended, close the fuel shut off valve and disconnect the wire(s) from the spark plug(s). 3 Caution m–5187 Children or bystanders may be injured if they move or attempt to operate the machine while it is unattended. Figure 15 1. Upper control bar 2.
Danger 1 Without the grass deflector, discharge cover, or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. Contact with rotating mower blade(s) and thrown debris will cause injury or death. 2 • Never remove the grass deflector from the mower because the grass deflector routes material down toward the turf. If the grass deflector is ever damaged, replace it immediately. • Never put your hands or feet under the mower.
Important All four hairpin cotter pins must be in the same hole location and with the correct number of spacers for a level cut. Note: Spare height–of–cut spacers may be stored on posts and retained by a hairpin cotter. 4 3 2 5 m–5203 4 1 Figure 18 1. Gage Wheel 2. Stud 3. Washer 5 1 1 3 4. Nut 5. Wheel nut and washer. Do Not Remove. m-4856 Adjusting Center Gage Wheels 2 4 The gage wheels must be adjusted in the proper hole location for each height-of-cut position. 1.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position.
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 Air Cleaner Service Interval/Specification 2 4 Foam Element: Clean and re-oil after every 25 operating hours. Paper Element: Clean after every 50 operating hours.
ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ ÓÓÓÓÓÓÓ 2. Place the air cleaner assembly onto the air cleaner base (Fig. 20). Secure with nut. 2 1 3. Install the air cleaner cover and secure latches (Fig. 20). Servicing the Engine Oil m–4694 Service Interval/Specification Figure 21 1. Foam element Change oil: 2. Oil • After the first 8 operating hours. • After every 100 operating hours.
1 5. Slowly pour approximately 80% of the specified oil, page 27, into the filler tube (Fig. 23). Now check the oil level; refer to Checking Oil Level, page 27. Slowly add additional oil to bring to full mark on dipstick. 2 3 Changing the Oil Filter Service Interval/Specification Replace the oil filter every 200 hours or every other oil change. Note: Change oil filter more frequently when operating conditions are extremely dusty or sandy. Figure 23 1. Oil dipstick 2. Metal end 1.
2 Type: Champion RCJ8Y or NGK BPR4ES Air Gap: 0.030 in. (.75 mm) 3 1 Removing the Spark Plug(s) 0.030 in. (.75 mm) 1. Disengage the power take off (PTO), chock or block tires, and turn the ignition key to off to stop the engine. Remove the key. 2. Pull the wire(s) off the spark plug(s) (Fig. 26). Now clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage. 3. Remove the spark plug(s). Figure 27 1. Center electrode insulator 2. Side electrode 1 3.
Where to Add Grease Lubricate the grease fittings as shown on the Check Service Reference Aid decal (Figure 28). m–5196 Figure 30 Cleaning the Cooling System Service Interval/Specification Before each use, check and clean engine cooling system. Remove any build–up of grass, dirt or other debris from the cylinder and cylinder head cooling fins, air intake screen on flywheel end, and carburetor–governor levers and linkage.
Note: Now is the best time to install a new fuel filter because the fuel tank is empty. Refer to Replacing the Fuel Filter; page 31. 5. Install the fuel line onto the valve. Slide the hose clamp close to the valve to secure the fuel line. 1 2 m–2147 Figure 31 1. Rear Tire 2. Caster tire 3 2 1 Servicing the Fuel Tank m–5235 Figure 32 Danger 1. Fuel line 2. Hose clamp In certain conditions, gasoline is extremely flammable and highly explosive.
1 1 2 3 3 1 2 M-4280 M-4294 Figure 33 1. Hose clamp 2. Fuel line Figure 34 1. Cap 2. Baffle 3. Filter 3. Fluid level—full Warning Servicing the Hydraulic System Hydraulic fluid escaping under pressure can penetrate skin and cause injury. Checking the Hydraulic Fluid • 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.
Bleeding Hydraulic System 3. Place drain pan under filter, remove the old filter and wipe the filter adapter gasket surface clean (Fig. 35). 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. 1. Raise rear of the machine so wheels are off the ground and support with jack stands. 2. Start the engine and run at idle speed. Engage traction on one side and spin the wheel by hand. 3.
Testing Procedure 6. If the machine is too aggressive or tends to jump forward, the valve needs to be opened further. 1. Start engine and run for 5 minutes at 3/4 throttle, to warm hydraulic fluid. 7. If the machine is slow to respond, the valve needs to be closed further. 2. Drive the machine to a clear and level open area such as a driveway. 8. Repeat the testing procedure to check for proper operation. Re-adjust the by–pass valves until proper performance is achieved.
5. Push down on Pump Arm until Sleeve contacts bottom nut (Fig. 38). Wheel should now be rotating slowly in reverse. 1 2 6. Turn bottom nut up slowly, moving sleeve and pump arm up, until wheel stops rotating (Fig. 38). 7. Turn top nut down against sleeve and tighten to lock the adjustment (Fig. 38). 8. Repeat step 3 above to check adjustment. Repeat adjustment procedure if necessary. 3 9. Repeat on other wheel, if necessary. m–2600 Figure 39 1. Adjusting nut 2. Slot 3.
Servicing the Battery 3. Lift the black rubber cover up on the negative cable. Disconnect the negative (black) ground cable from the battery post (Fig. 41). Warning 4. Lift the red rubber cover up on the positive cable. Disconnect the positive cable (red cover) from the battery post (Fig. 41). 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. 5.
2. Look at the side of the battery. The electrolyte must be up to the upper line (Fig. 42). Do not allow the electrolyte to get below the lower line (Fig. 42). Important Do not overfill the battery because electrolyte (sulfuric acid) can cause severe corrosion and damage to the chassis. 3. If the electrolyte is low, add the required amount of distilled water; refer to Adding Water to the Battery, page 37. 5. Wait five to ten minutes after filling the battery cells.
5. Install the battery in the machine and connect the battery cables; refer to Installing the Battery on page 36. Note: Do not run the machine with the battery disconnected. Electrical damage may occur. 1 2 Servicing the Cutting Blades To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, you may want to keep extra blades on hand.
dimension exceeds 1/8 in. (3 mm), the blade is bent and must be replaced. Refer to Removing the Blades, and Installing the Blades on page 39. 1 Warning m–1854 A blade that is bent or damaged could break apart and could seriously injure or kill you or bystanders. Figure 48 1. Sharpen at original angle • Always replace bent or damaged blade with a new blade. • Never file or create sharp notches in the edges or surfaces of blade. 2. Check the balance of the blade by putting it on a blade balancer (Fig.
5. Perform steps in the following sections Frame Set Up, Checking Front–to–Rear Pitch and Checking Side–to–Side Leveling. Checking Engine Deck Height Setting up Frame 2. Adjust the tire pressure in all tires to specifications on page 30. 1. Stop the engine, remove the key and disconnect the spark plug wire(s) from the spark plug(s). 3. Measure engine deck height at location A (Fig. 51). Checking Carrier Frame and Deck Alignment 4. Measure engine deck height at location B (Fig. 51). 5.
5 Checking the Deck Front-to-Rear Pitch 3 24 in. 1. Check the tire pressure on both deck and traction unit. 2. Position one blade front-to-rear (Fig. 54). Measure at C and D locations (Fig. 54) from a level surface to the cutting edge of the blade tips (Fig. 55). 5 A B 4 2 4 3. The mower blade should be 1/4 in. (6 mm) lower in front C than in the rear D. Rotate blades and repeat for other blades. If it is not correct, proceed to Changing the Deck Front–to–Rear Pitch. 1 m–5242 Front Figure 52 1.
3 2 4 MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE m–2550 Figure 58 5 1 Changing the Side-to-Side Level m–5231 Figure 56 1. Caster Wheel 2. Carrier Frame 3. Front height–of–cut pins Changing the side–to–side leveling is done by adjusting tire pressure. 4. Jam nut 5. Ball joint Changing the Side–to–Side Leveling with Tire Pressure 4. Position the blades front-to-rear (Fig. 54). Measure at C and D locations (Fig. 54) from a level surface to the cutting edge of the blades (Fig. 55). 1.
Front 10. Connect clutch wire connector to wire harness. 11. Install PTO drive belt. A 3 1 4 5 7 m–1078 Figure 59 6 2 8 m–5340 Figure 61 MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE 1. 2. 3. 4. Traction belt Idler pulley Clutch retainer Tension spring 5. 6. 7. 8. Clutch wire connector Pivot bolt Drive pulley Engine deck m–2550 Figure 60 Replacing the Deck Belt 5.
9. Adjust PTO drive belt guides an 1/8 in. from belt (Fig. 63). 11. Adjust deck belt guide an 1/8 in. from belt (Fig. 62). 3 4 10. Install the heat shield to the the engine deck and carrier frame. 11. Install the belt covers onto the cutting unit, then install and tighten the knobs. 12. Install the carrier frame cover onto the cutting unit, then install and tighten the hand knobs. 3 5 5 6 6 1 3 1 2 m–5196 2 Figure 62 1. Deck belt 2. Idler arm spring 3. Outside pulley 5 4. PTO Drive belt 5.
1 2 2 1 3 2 4 2 m–5197 Figure 65 1. Carrier Frame Mounting Tube m-5198 2. Bushing Figure 64 1. Locking Pin 2. Spacers (locate as required) 3. Carrier Frame Mounting Tube 4. Caster Wheel Fork Servicing the Caster Wheel and Bearings 4. Insert a pin punch into the mounting tube and carefully drive out the bushings (Fig. 65). Clean the inside of the mounting tube. The caster wheels rotate on a roller bearing supported by a spanner bushing. If the bearing is kept well lubricated, wear will be minimal.
3. Install bolt and nut. Place “J” hook end of spring around grass deflector (Fig. 67). 1 Important The grass deflector must be able to lower down into position. Lift the deflector up to test that it lowers into the full down position. 2 8 6 4 2 3 3 5 1 5 4 3 7 m-5210 Figure 66 1. Locknut 2. Wheel Bolt 3. Bushing 4. Spanner Bushing 5. Roller Bearing m-5037 Figure 67 1. 2. 3. 4. 5. 5. To assemble, place one (1) bushing into the wheel hub.
GND BK BK BK 4 PTO CLUTCH 3 GN BK + BN PK D2 K1 BU W BU 1 S T1 D3 R2 D1 C1 D4 C2 R F1 20A R D5 C2 D6 J14–1 Y GY T S2 S3 NEUTRAL SW. NEUTRAL SW. (CLOSED WHEN(CLOSED WHEN IN NEUTRAL) IN NEUTRAL) R 5 B S3 S2 SW. CLUTCH SW.
Hydraulic Diagram Motor Right Side Pump Right Side B A Filter Expansion Tank Pump Left side B A Motor Left side Charge Pump Inlet Case Drain m–5225 48
Cleaning and Storage D. Restart the engine and run it until it stops. E. Choke or prime the engine. 1. Disengage the power take off (PTO) and turn the ignition key to off. Remove the key. F. Start and run the engine until it will not start again. Use the primer, if equipped on machine, several times to ensure no fuel remains in primer system. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine.
Troubleshooting PROBLEM Engine g will not start,, starts hard,, or f il to keep fails k running. i Engine g loses power. Engine g overheats. Machine does not drive. Machine does not drive up hills or inclines. POSSIBLE CAUSES CORRECTIVE ACTION 1. Fuel tank is empty. 1. Fill fuel tank with gasoline. 2. Battery is dead. 2. Charge battery. 3. Choke is not ON. 3. Move choke lever to ON. 4. Air cleaner is dirty. 4. Clean or replace air cleaner element. 5.
PROBLEM Machine moves slowly in neutral. Machine drive is too aggressive. Mower lifts when drive is engaged. Abnormal vibration. Uneven cutting g height. g Blades do not rotate. POSSIBLE CAUSES CORRECTIVE ACTION 1. Neutral is mis-adjusted. 1. Adjust hydro pump neutral. 2. Return spring is broken or missing. 2. Replace return spring. 3. 3. Linkage is dirty or bent. Clean and lubricate linkage. Replace bent or worn parts. 1. By-pass valve is adjusted too far closed. 1.
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.
