Form No. 3327–419 Mid–Size Mower Proline Gear 12.5hp with 32 Side Discharge Mower Model No. 30171—Serial No.
Warning Think Safety First . . . . . . . . . . . . . . . . . . . . . . . . . Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating the Parking Brake . . . . . . . . . . . . . . . . Starting and Stopping the Engine . . . . . . . . . . . . . Operating the Blade Control (PTO) . . . . . . . . . . . The Safety Interlock System . . . . . . . . . . . . . . . . Driving Forward or Backward . . . . . . . . . . . . . . . Operating the Lower Control Bar . . . . . . . . . . . . .
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. serial numbers of your product ready. Figure 1 illustrates the location of the model and serial numbers on the product.
• Check that operator’s presence controls, safety switches and shields are attached and functioning properly. Do not operate unless they are functioning properly. Maintenance and storage • Disengage drives, set parking brake, stop engine and disconnect spark plug wire. Wait for all movement to stop before adjusting, cleaning or repairing. Operation • Clean grass and debris from cutting unit, drives, mufflers, and engine to help prevent fires. Clean up oil or fuel spillage.
• Do not mow on wet grass. Reduced traction could cause sliding. • Be aware of the mower discharge direction and do not point it at anyone. Do not operate the mower without either the entire grass catcher or the guard in place. • Do not use a grass catcher on steep slopes. Heavy grass bags could cause loss of control of the machine. • Slow down before turning. Sharp turns on any terrain may cause loss of control. • Do not mow up and down slopes. • Turn off blades when not mowing.
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. 82-2280 82-2290 43-8480 66-1340 54-9220 67-5360 98-3296 63-8440 1.
98-5130 1. Warning—read the Operator’s Manual for instructions on torquing the blade bolt/nut to 75–80 ft.-lb.(102–106 N⋅m). 95-5537 98-3256 1. Read the Operator’s Manual for instructions on operating the cutting blade 2. Push forward to engage 3. Pull back to disengage 98-3266 98-0776 98-4387 1. Warning—wear hearing protection.
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 Note: Determine the left and right sides of the machine from the normal operating position. Loose Parts Note: Use the chart below to verify all parts have been shipped. DESCRIPTION QTY. Caster assemblies 2 Bolt, 3/8 x 3/4 in. 8 Flange nut, 3/8 in. 8 Upper handle 1 Bolt, 3/8 x 1 in. 4 Locknut, 3/8 in. 4 Plastic terminal 1 Wire tie 1 Rod fitting 2 Clevis pin 2 Washer, 1/4 in.
Installing the Front Casters 1 1. Align casters with holes on top and front of mower and insert 8 bolts (3/8 x 3/4 in.) through mower. Secure with 8 flange nuts (3/8 in.) below mower (Fig. 2). 5 6 Note: Tighten lower bolts first to pull caster against front, then top bolts last. 4 2. Torque bolts to 30–35 ft. lb. (40–47 N m). 3 2 4 m–4213 1 Figure 3 1. Upper handle 2. Rear frame 3. Bolt, 3/8 x 1 in. 3 4. Route wire harness inside of frame, along left handle and over throttle cable.
5. After adjusting control rods, check parking brake adjustment; refer to Servicing the Brake, page 30. 5 1 4 4 2 3 3 2 m–3782 Figure 5 1. Terminal 2. Clip 1 3. Plastic plug 4. Switch m–3770 Figure 7 Installing the Traction Control Rods 1. Control rod 2. Fixed control bar 3. Parking brake lever 1. Thread trunnions equal distance onto each control rod. For a starting point, thread on approximately 2 in. (51 mm) (Fig. 6). Connecting the Throttle Cable 2.
6 Installing the Blade Control (PTO) Rod 5 1. Rotate blade control lever (PTO) vertical away from left handle so rod drops down. 1 4 2. Remove hairpin cotters from bottom end of blade control rod (PTO) (Fig. 9). 3 2 3. Secure blade control (PTO) rod through hole in bellcrank with hairpin cotters (Fig. 9). 1 m–3772 Figure 10 1. Shift lever 2. Control panel 3. Rubber seal washer 2 3 4 Mounting the Fuel Tank m–3783 1.
3 1 2 Figure 13 2 1 1. Caution m–3778 2. Wear hearing protection Figure 12 1. Fuel line 2. Hose clamp 3. Fuel fitting Controls Become familiar with all the controls (Fig. 14) before you start the engine and operate the machine. Operation Throttle Control – The throttle control has Choke, Fast, Slow and Stop positions. Note: Determine the left and right sides of the machine from the normal operating position.
Recoil Starter – Pull recoil starter handle to start engine. 2. Gradually release the upper control bar. Fuel Shut–off Valve – (In fuel line) Close fuel shut–off valve when transporting or storing mower. 1 2 2 5 7 m–4212 3 Figure 15 1. Upper control bar 2. Parking brake lock 6 1 Starting and Stopping the Engine 4 Starting the Engine 1. Make sure spark plug wire(s) are installed on spark plug(s) and fuel valve is open. m–4194 Figure 14 1. 2. 3. 4.
2 1 1 3 2 m–4194 m–4194 Figure 16 1. Blade control (PTO) Figure 17 2. Throttle lever 1. Upper control bar 2. Bail 3. Blade control (PTO) 3. Set the parking brake. 4. Pull wire off spark plug(s) to prevent possibility of someone accidentally starting the machine while transporting or storing the machine. Disengaging the Mower Blades (PTO) 1. To disengage the blade(s), pull blade control lever rearward, all the way (Fig. 17). 5. Close the fuel shut off valve before transporting or storing machine.
Testing the Safety Interlock System 1 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. 1. Set the parking brake, disengage the PTO and place the throttle forward. Start the engine. With the engine running squeeze the bail against upper control bar and push the mower blade control lever forward. The mower blades begin rotating. 2 m–4194 2.
Using Side Discharge or Mulch Grass Note: Lifting up on handle will assist driving the machine up a curb and not spin the drive wheels. This mower has a hinged grass deflector that disperses clippings to the side and down toward the turf. 1 Danger 2 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.
4. Torque blade bolt to 75–80 ft. lb. (101–108 N m). 1 2 A 6 B 5 4 4 C D 1 E 3 m–3789 Figure 22 2 1. Axle pivot bolt m–3779 2. Axle adjustment bolt Figure 21 1. Blade 2. Blade bolt 3. Cone washer 4. Spacer 5. Thin washer 6. Nut Adjusting the Caster Position 1. Using the height-of-cut chart, adjust the caster spacers to match with the axle hole selected (Fig. 23). 2. Remove clevis pin, slide caster from support and change spacers (Fig. 23). Adjusting the Axle Height 3.
Height-of-Cut Chart No. of Spacers Below Caster Number of 1/4 in. Blade Spacers Below Spindle Axle Position 1/2 in. (13mm) 3/16 in. (5 mm) 4 3 2 1 0 A 0 0 1 in. (26 mm) 1–1/4 in. (32 mm) 1–1/2 in. (38 mm) 1–3/4 in. (45 mm) 2 in. (45 mm) A 0 1 1–1/8 in. (29 mm) 1–3/8 in. (35 mm) 1–5/8 in. (41 mm) 1–7/8 in. (48 mm) 2–1/8 in. (55 mm) A 1 0 1–3/8 in. (35 mm) 1–5/8 in. (41 mm) 1–7/8 in. (48 mm) 2–1/8 in. (55 mm) 2–3/8 in. (55 mm) B 0 1 1–3/8 in. (35 mm) 1–5/8 in.
Maintenance Note: Determine the left and right sides of the machine from the normal operating position. Important Refer to your engine operator’s manual for additional maintenance procedures.
Caution Someone could accidently start the engine and seriously injure you or other bystanders. 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 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.
6 5 4 4 MEASURE FROM CUTTING EDGE TO A LEVEL SURFACE 1 3 m–2558 Figure 26 2 2. Rotate the opposite ends of the blades forward. m–3779 3. Measure from a level surface to the cutting edge of the blades at the same position as in step 1 above. The difference between the dimensions obtained in steps 1 and 2 must not exceed 1/8 in. (3 mm). If this 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 26. Figure 27 1.
Installing the Blades Cleaning the Foam Element 1. Place the blade onto the bolt, over cone washer. Select proper number of spacer(s) for height-of-cut and slide bolt into spindle (Fig. 27). 1. Wash the foam element in liquid soap and warm water. When the element is clean, rinse it thoroughly. 2. Dry the element by squeezing it in a clean cloth. Important The curved part of the blade must be pointing upward toward the inside of the mower to ensure proper cutting. 3.
1. Carefully slide the foam element onto the paper air cleaner element (Fig. 30). 1 2 2. Place the air cleaner assembly onto the air cleaner base (Fig. 30). 3 3. Install the air cleaner cover and secure with cover nuts (Fig. 30). Servicing the Engine Oil Service Interval/Specification Change oil: Figure 33 • After the first 8 operating hours. 1. Oil dipstick 2. Metal end • After every 50 operating hours. Note: Change oil more frequently when operating conditions are extremely dusty or sandy. 3.
Changing the Oil Filter Removing the Spark Plug(s) Service Interval/Specification 1. Disengage the power take off (PTO) and set the parking brake. Replace the oil filter every 100 hours or every other oil change. 2. Pull the wire(s) off the spark plug(s) (Fig. 36). Now clean around the spark plug(s) to prevent dirt from falling into the engine and potentially causing damage. Note: Change oil filter more frequently when operating conditions are extremely dusty or sandy. 3.
2 Cleaning the Cooling System 3 Service Interval/Specification 1 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. This will help insure adequate cooling and correct engine speed and will reduce the possibility of overheating and mechanical damage to the engine. 0.025 in. (0.
2. Rear wheels must lock when you try to push the machine forward or backward. Adjustment is required if the wheels turn and do not lock; refer to Adjusting the Brake, page 30. 1 3. Release the brake and press upper control bar very lightly, approximately 1/2 in. (13 mm), wheels should rotate freely. 4. If both conditions are met, no adjustment is required. Adjusting the Brakes 2 m–3797 The brake lever is on the upper control bar (Fig. 14).
1 3 2 1 2 m–3773 m–3778 Figure 42 1. Brake rod Figure 43 2. Wing nut 1. Fuel shut-off valve 2. Fuel filter Servicing the Fuel Tank 3. Clamp Servicing the Fuel Filter Draining The Fuel Tank Service Interval/Specification Danger Replace the fuel filter after every 200 operating hours or yearly, whichever occurs first. In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property.
1 2 3 1 2 4 m–3778 Figure 45 Figure 44 1. Hose clamp m–3793 1. Hairpin cotter 2. Brake rod 2. Filter 3. Shield 4. Drive belt Checking the Belts Replacing the Traction Belt Service Interval/Specification 1. Disengage the blade control (PTO), set the parking brake and stop the engine. Check all belts after every 50 operating hours or monthly, whichever occurs first. Look for dirt, wear, cracks and signs of overheating. 2. Raise the rear of the machine and hold with jack stands. 3.
7. Engage PTO lever and check the clearance between the bellcrank and the transmission output shaft (Fig. 48). Space should be 1/16 –1/8 in. (2–3 mm). 1 8. Remove hairpin cotter and clevis pin from bellcrank. Rotate clevis clockwise on rod to increase or counterclockwise to decrease clearance (Fig. 48). 3 3 4 2 2 1 2 m–4726 Figure 46 1. Idler in slot 2. Belt guide 3. 1-1/4 in. (32 mm) 4. Mower belt 4 6 5 Replacing the Mower Belt m–3860 Figure 48 1.
Adjusting Mower Belt Tension Adjusting the Grass/Mud Scraper Service Interval/Specification 1. Loosen the locknut holding scraper to the engine frame (Fig. 51). Check belt tension after the first 8 and 25 hours of operation. Check the belt tension every 50 hours. 2. Rotate scraper until they align with center of pulley grooves (Fig. 51). Important Belt must be tight enough to not slip during heavy loads while cutting grass. Over tensioning will reduce belt and spindle bearing life. 3.
Important The grass deflector must be spring-loaded in the down position. Lift the deflector up to test that it snaps to the full down position. 4 3 5 2 1 6 m–3781 Figure 52 1. Deflector 2. Bolt 3. Deflector mount 4. Spring 5. Spacer 6.
Wiring Diagram J3 KILL W2 J4 J5 J2 MAG W1 W4 W3 WIRE LIST DESIG. AWG COLOR ROUTE W1 16 WHITE J2 J4 W2 16 WHITE J2 J3 W3 16 BLUE P1–1 J5 W4 16 BLACK P1–2 J1 1 J1 GND 2 P1 PTO Cleaning and Storage A. Run engine to distribute conditioned fuel through the fuel system (5 minutes). 1. Disengage the power take off (PTO) and set the parking brake. B. Stop engine, allow to cool and drain the fuel tank; refer to Servicing the Fuel Tank, page 31, or operate engine until it stops. 2.
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. Possible Causes Corrective Action 1. Fuel tank is empty. 1. Fill fuel tank with gasoline. 2. Choke is not on. 2. Move choke lever to on. 3. Air cleaner is dirty. 3. Clean or replace air cleaner element. 4. Spark plug wire is loose or disconnected. 4. Install wire on spark plug. 5.
Problem Abnormal vibration. Uneven cutting g height. g Blades do not rotate. Blades do not stop when disengaged. g g Possible Causes Corrective Action 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. Engine mounting bolts are loose. 3. Tighten engine mounting bolts. 4. Loose engine pulley, idler pulley, or blade pulley. 4. Tighten the appropriate pulley. 5. Engine pulley is damaged. 5.
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.
