Form No. 3326–490 Mid–Size Mower Proline Hydro 15 HP with 52 in. Side Discharge Mower Model No.
Warning Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Starting and Stopping the Engine . . . . . . . . . . . . Operating Mower Blade Control (PTO) . . . . . . . Understanding the Safety Interlock System . . . . Driving Forward or Backward . . . . . . . . . . . . . . . Bringing Machine to Neutral Position . . . . . . . . . Stopping the Machine . . . . . . . . . . . . . . . . . . . . . Pushing the Machine by Hand .
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.
1–523552 98–0776 104–8173 98–4387 104–8172 95–1543 105–0840 104–8569 10
95–5862 104–8186 95–1523 95–1544 104–8171 11
104–8196 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.
Set Up 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. (22.5 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.
2. Remove hairpin cotter and rod from upper control bars (Fig. 4). 1 3. Press and hold upper control bars against reference bar, so stop hits (Fig. 4). 3 2 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). 4 5. When rod and holes in upper control bars line up, rotate turnbuckle one additional turn, so rod is shorter.
5. Make sure the vent caps are installed in the battery. Charge the battery for 1 hour at 25 to 30 amps or 6 hours at 4 to 6 amps. Do not overcharge the battery. Warning 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.
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) 2. Move the shift lever to neutral, set the parking brake and turn ignition key to RUN. 3. Move the throttle control to CHOKE position before starting a cold engine. 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 usually does not require any choking. To start a warm engine, move throttle control to FAST position.
Understanding 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.
1 3. Turn the ignition key to “OFF” to stop the engine. 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 13 1.
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.
Note: Spare height–of–cut spacers may be stored on posts and retained by a hairpin cotter. Important All four hairpin cotter pins must be in the same hole location and with the correct number of spacers for a level cut. 4 3 2 5 m–5203 4 1 Figure 16 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 1 Service Interval/Specification 2 Foam Element: Clean and re-oil after every 25 operating hours.
3. Install the air cleaner cover and secure with cover nuts (Fig. 18). 2 1 Servicing the Engine Oil Service Interval/Specification Change oil: m–5193 • After the first 5 operating hours. Figure 19 1. Foam element • After every 100 operating hours. 2. Oil Note: Change oil more frequently when operating conditions are extremely dusty or sandy. Cleaning the Paper Element Oil Type: Detergent oil (API service SF, SG or SH) 1. Lightly tap the element on a flat surface to remove dust and dirt (Fig. 20).
5. Slowly pour approximately 80% of the specified oil on page 26, into the filler tube (Fig. 21). Now check the oil level; refer to Checking Oil Level, page 26. Slowly add additional oil to bring to “FULL” mark on dipstick. Important Do not overfill the crankcase with oil because the engine may be damaged. 1 2 Change Oil Filter 3 Service Interval/Specification Replace the oil filter every 200 hours or every other oil change.
2 Type: Champion RC12YC or Champion Premium Gold 2071 (or equivalent) Air Gap: 0.040 in. (1.00 mm) 3 1 0.040 in. (1.02 mm) Removing the Spark Plug(s) 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. 2. Pull the wire(s) off the spark plug(s) (Fig. 24). Now clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage. Figure 25 3. Remove the spark plug(s) and metal washer.
Where to Add Grease Lubricate the grease fittings as shown on the Check Service Reference Aid decal (Fig. 26). m–5196 Figure 28 Cleaning the Cooling System Service Interval/Specification Lubricate the caster and wheel bearings 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 30. 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 29 1. Rear Tire 2. Caster tire 1 Servicing the Fuel Tank 2 m–5185 Danger Figure 30 1. Fuel shut-off valve In certain conditions, gasoline is extremely flammable and highly explosive.
7. Check for fuel leaks and repair if needed (Fig. 30). 1 3 1 2 3 1 M-4280 3 2 Figure 32 m–5234 1. Cap 2. Baffle Figure 31 1. Hose clamp 2. Fuel line 3. Filter 3. Fluid level—full Warning Servicing the Hydraulic System Hydraulic fluid escaping under pressure can penetrate skin and cause injury. • 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 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. When the wheel begins to spin on its own, keep it engaged until wheel drives smoothly (minimum 2 minute). 1 m–5208 Figure 33 4.
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 “Test 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. 36). 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. 36). 7. Turn top nut down against sleeve and tighten to lock the adjustment (Fig. 36). 8. Repeat step 3 above to check adjustment. Repeat adjustment procedure if necessary. 3 9. Repeat on other wheel, if necessary. m–2600 Figure 37 1. Adjusting nut 2. Slot 3.
Servicing the Cutting Blade Checking for Bent 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. 1. Rotate the blades until the ends face forward and backward (Fig. 40). Measure from a level surface to the cutting edge, position “A”, of the blades (Fig. 41). Note this dimension.
Removing the Blades 2 Blades must be replaced if a solid object is hit, if the blade is out of balance or is bent. To ensure optimum performance and continued safety conformance of the machine, use genuine TORO replacement blades. Replacement blades made by other manufacturers may result in non-conformance with safety standards. 1 m–1855 Figure 44 1. Blade 2. Balancer 1. Hold the blade end using a rag or thickly-padded Installing the Blades glove.
4. If the height at location “A” is not correct, adjustment is needed. 2 3 3 5. Loosen the carrier frame mounting bolts on both sides of the machine (Fig. 45). 6. Align the carrier frame and engine deck to match 2–13/16 in., plus or minus a 1/4 in. at location “A” (Fig. 45). A 7. Tighten the carrier frame mounting bolts on both sides of the machine. 6 A 4 1 5 2 B 4 1 4 m–5237 Figure 46 1. Back view of machine 2. Top of engine deck 3.
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. 49). Measure at “C” and “D” locations (Fig. 49) from a level surface to the cutting edge of the blade tips (Fig. 50). 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.
3 2 4 MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE m–2550 Figure 53 5 1 Changing the Mower Side-to-Side Level m–5231 Figure 51 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 1. Change the tire pressure on both deck and traction unit. Do this to the corresponding side that needs adjustment. 4. Position the blades front-to-rear (Fig. 49). Measure at “C” and “D” locations (Fig.
3 1 4 5 MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE 7 m–2550 Figure 55 6 2 5. If it does not measure correctly, add air pressure in rear tires to raise height–of–cut 8 m–5340 Figure 56 6. If it does not measure correctly, decrease air pressure in rear tires to lower height–of–cut. 1. 2. 3. 4. 7. Check carrier frame front–to–rear pitch. Traction belt Idler pulley Clutch retainer Tension spring 5. 6. 7. 8.
10. Install the carrier frame cover onto the cutting unit, then install and tighten the hand knobs. 9. Adjust PTO drive belt guides an 1/8 in. from belt (Fig. 58). 11. Adjust deck belt guide an 1/8 in. from belt (Fig. 57). 10. Install the heat shield to the the engine deck and carrier frame. 4 3 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.
1 2 2 1 3 2 4 2 m–5197 Figure 60 1. Carrier Frame Mounting Tube m-5198 2. Bushing Figure 59 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. 60). 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. 62). 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 61 1. Locknut 2. Wheel Bolt 3. Bushing 4. Spanner Bushing 5. Roller Bearing m-5037 Figure 62 1. 2. 3. 4. 5. 5. To assemble, place one (1) bushing into the wheel hub.
Wiring Diagram S1 IGNITION G M KEY SWITCH OFF ON W BK G+M NONE WIRE COLOR CODES BK BN BU GN GY OR M G KEY SW. F1 BLACK BROWN BLUE GREEN GREY ORANGE PK PINK R T VIO W Y RED TAN VIOLET WHITE YELLOW PK 7.5A PK PK P5–2 S3 S2 CLUTCH SW. BAIL 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 45
Cleaning and Storage B. Run the engine to distribute conditioned fuel through the fuel system (5 minutes). 1. Disengage the power take off (PTO) and turn the ignition key to “OFF” to stop the engine. Remove the key. C. Stop the engine, allow it to cool and drain the fuel tank; refer to Draining Fuel Tank, page 30. D. Restart the engine and run it until it stops. 2. Remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine.
PROBLEM Engine g loses power. POSSIBLE CAUSES CORRECTIVE ACTION 1. Engine load is excessive. 1. Reduce ground speed. 2. Air cleaner is dirty. 2. Clean air cleaner element. 3. Oil level in crankcase is low. 3. Add oil to crankcase. 4. Cooling fins and air passages under engine blower housing are plugged. 4. Remove obstruction from cooling fins and air passages. 5. Spark plug is pitted, fouled, or gap is incorrect. 5. Install new, correctly gapped spark plug. 6.
PROBLEM Uneven cutting g height. g Blades do not rotate. POSSIBLE CAUSES CORRECTIVE ACTION 1. Blade(s) not sharp. 1. Sharpen blade(s). 2. Cutting blade(s) is/are bent. 2. Install new cutting blade(s). 3. Mower is not level. 3. Level mower from side-to-side and front-to-rear. 4. Underside of mower is dirty. 4. Clean the underside of the mower. 5. Tire pressure is incorrect. 5. Adjust tire pressure. 6. Blade spindle bent. 6. Contact Authorized Service Dealer. 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.
