Form No. 3391-342 Rev A 72in Guardian® Recycler® Mower Groundsmaster® 3280-D Traction Unit Model No. 31335—Serial No. 315000001 and Up Model No. 31336—Serial No. 315000001 and Up Register at www.Toro.com.
This product complies with all relevant European directives. For details, please see the Declaration of Incorporation (DOI) at the back of this publication. This manual uses 2 words to highlight information. Important calls attention to special mechanical information and Note emphasizes general information worthy of special attention.
Safety • Never remove fuel cap or add fuel with the engine This machine has been designed in accordance with EN ISO 5395:2013 and ANSI B71.4-2012. • Allow engine to cool before refueling. • Never refuel the machine indoors. • Never store the machine or fuel container where there is running. Improper use or maintenance by the operator or owner can result in injury.
• Never carry passengers and keep pets and bystanders • • • • • • • Use full width ramps for loading machine into trailer or away. Slow down and use caution when making turns and crossing roads and sidewalks. Stop blades if not mowing. Do not operate the mower under the influence of alcohol or drugs. Lightning can cause severe injury or death. If lightning is seen or thunder is heard in the area, do not operate the machine; seek shelter.
• Make sure that all hydraulic line connectors are tight and all hydraulic hoses and lines are in good condition before applying pressure to the system. • Keep your body and hands away from pin hole leaks or nozzles that eject hydraulic fluid under high pressure. Use paper or cardboard, not your hands, to search for leaks. Hydraulic fluid escaping under pressure can have sufficient force to penetrate the skin and cause serious injury.
Safety and Instructional 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. 93-7818 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 115-149 N-m (85-110 ft-lb). 120-6604 1. Thrown object hazard—keep bystanders away from the machine. 2. Cutting/dismemberment hazard of hand, mower blade—stay away from moving parts, keep all guards and shields in place.
93-6697 1. Read the Operator's Manual. 2. Add SAE 80w-90 (API GL-5) oil every 50 hours. 100-5622 1. Height of cut adjustment 117–4979 1. Entanglement hazard, belt—stay away from moving parts, keep all guards and shields in place. 107-2908 Model 31336 only 107-1622 Model 31336 only 1. Thrown object hazard—keep bystanders a safe distance from the machine. 2. Thrown object hazard—do not operate the mower with the deflector up or removed, keep the deflector in place. 3.
Setup Loose Parts Use the chart below to verify that all parts have been shipped. Procedure Description 1 2 3 4 5 Use Qty. No parts required – Secure the grass deflector Lift arm, right Lift arm, left 1 1 Install the lift arms to the traction unit No parts required – Connect the lift arms to the cutting unit No parts required – Connect the PTO shaft to the cutting unit gear box. No parts required – Grease the machine. Media and Additional Parts Description Use Qty.
2 1 Important: If the 72 inch Side Discharge Cutting Unit, model 31336, is being mounted to a model 30307, 30308, 30309, 30343, 30344 or 30345 traction unit with a serial number prior to 311000301, the Cutting Unit Alignment Kit, part number 120–6599 must be installed to the cutting unit prior to being mounted to traction unit. 3 4 1 Securing the Grass Deflector (Model 31336 only) 5 G018264 Figure 2 No Parts Required 1. Grass Deflector 4.
4 3 5 2 Figure 3 1. Pivot pin 4. Brake return spring 2. Lift arm 3. Pivot bracket 5. Tab 1 8. Install the wheel and tire assembly. Torque the wheel nuts to 102-108 N-m (75-80 ft-lb). 9. Repeat the procedure on the opposite side of the machine. g018216 3 Figure 4 1. Castor arm bracket 2. Hairpin cotter Connecting the Lift Arms to the Cutting Unit 4. Lift arm 5. Thrust washer 3. Clevis pin 4. Secure the lift arm to the castor arm with the 2 thrust washers, clevis pin and hair pin cotter.
Product Overview Specifications Note: Specifications and design are subject to change without notice. Figure 5 1. PTO shaft 2. Bolts and locknuts 3. Gear case 4. Roll pin Width of Cut 1.
Adjusting the Height-of-Cut Operation The height-of-cut is adjustable from 25 to 127 mm (1 to 5 inches) in 13 mm (1/2 inch) increments. To adjust the height-of-cut, position the castor wheel axles in the upper or lower holes of the castor forks and add or remove an equal number of spacers from the castor forks. Note: Determine the left and right sides of the machine from the normal operating position.
Front Castor Wheels 3. Install the tensioning cap to secure the assembly. 1. Remove the tensioning cap from the spindle shaft (Figure 7) and slide the spindle out of the castor arm. Put the 2 shims (1/8 inch) onto the spindle shaft as they were originally installed. These shims are required to achieve a level across the entire width of the cutting units. Slide the appropriate number of 1/2 inch spacers onto the spindle shaft to get the desired height-of-cut; then slide the washer onto the shaft. 4.
Adjusting the Skids Adjusting the Anti-Scalp Rollers The skids should be mounted in the lower position when operating in height of cuts greater than 64 mm (2–1/2 inches) and in the higher position when operating in height of cuts lower than 64 mm (2–1/2 inches). Whenever you change the height-of-cut, it is recommended to adjust the height of the anti-scalp rollers. 1. After adjusting the height-of-cut, adjust the rollers by removing the flange nut, bushing, spacer, and bolt (Figure 13).
3. Swing the lever back over to tighten the baffle and cam locks (Figure 14). 4. If the cam locks do not lock the baffle into place or it is too tight, loosen the lever and then rotate the cam lock. Adjust the cam lock until the desired locking pressure is achieved. 2 1 Figure 15 4 3 Position B Use this position when bagging. Always align it with the blower opening. G008961 Figure 14 1. Unlock lever 2. Rotate the cam lock to increase or decrease locking pressure 3. Position the baffle 4.
Adjusting the Cutting Unit Pitch 2. Check and adjust front and rear tractor tire pressure to 138 kPa (20 psi). 3. Check and adjust all castor tire pressures to 345 kPa (50 psi). Cutting unit pitch is the difference in height-of-cut from the front of the blade plane to the back of the blade plane. Toro recommends a blade pitch of 8 mm (5/16 inch). That is the back of the blade plane is 8 mm (5/16 inch) higher than the front. 4. Check for bent blades; refer to Checking for a Bent Blade. 5.
Operating Tips Mowing Only When Grass is Dry Mow either in the late morning to avoid the dew, which causes grass clumping, or in late afternoon to avoid the damage that can be caused by direct sunlight on the sensitive, freshly mowed grass. Selecting the Proper Height-of-Cut Setting Remove approximately 25 mm (1 inch) or no more than 1/3 of the grass blade when cutting. In exceptionally lush and dense grass, you may have to raise the height-of-cut to the next setting.
Maintenance Recommended Maintenance Schedule(s) Maintenance Service Interval Maintenance Procedure After the first 2 hours • Tighten the castor wheel nuts. After the first 10 hours • Tighten the castor wheel nuts. • Torque the blade bolts. Before each use or daily • Lubricate the castor arm bushings. • Lubricate the castor wheel bearings. • Check the blades. Every 50 hours • • • • • • Check the gear box lubricant Lubricate the grease fittings. Tighten the castor wheel nuts. Torque the blade bolts.
Lubrication Service Interval: Every 50 hours The machine has grease fittings that must be lubricated regularly with No. 2 General-purpose Lithium-base Grease. If the machine is operated under normal conditions, lubricate all bearings and bushings after every 50 hours of operation or immediately after every washing. 1. Lubricate the following areas: • Castor fork shaft bushings (4) (Figure 19).
Removing the Cover DANGER If the engine is started and the PTO shaft is allowed to rotate, serious injury could result. Important: The fasteners on the covers of this machine are designed to remain on the cover after removal. Loosen all of the fasteners on each cover a few turns so that the cover is loose but still attached, then go back and loosen them until the cover comes free. This will prevent you from accidentally stripping the bolts free of the retainers.
4 3 5 2 Figure 27 1. Castor arm tube 2. Bushings 1 5. Apply grease to the inside and outside of the new bushings. Using a hammer and flat plate, drive the bushings into the mounting tube. 6. Inspect the castor spindle for wear and replace it if damaged. 7. Push the castor spindle through the bushings and mounting tube. Slide the thrust washer and spacer(s) onto the spindle. Install the tensioning cap on the castor spindle to retain all parts in place.
4. To assemble the castor wheel, push the bearing into the wheel hub. When installing the bearings, press on the outer race of the bearing. 5. Slide the bearing spacer into the wheel hub. Push the other bearing into the open end of the wheel hub to captivate the bearing spacer inside the wheel hub. 2 6. Install the castor wheel assembly between the castor fork and secure it in place with the bolt and locknut. 1 Checking for a Bent Blade G010555 1. Position the machine on a level surface.
Inspecting and Sharpening the Blade(s) Service Interval: Before each use or daily Every 50 hours DANGER A worn or damaged blade can break, and a piece of the blade could be thrown into the operator's or bystander's area, resulting in serious personal injury or death. Figure 31 • Inspect the blade periodically for wear or damage. 1. Cutting edge 3. Wear/slot forming 2. Curved area/sail 4. Crack WARNING • Do not try to straighten a blade that is bent.
Replacing the Drive Belt Checking and Correcting Mismatch of Blades The blade drive belt, tensioned by the spring loaded idler pulley, is very durable. However, after many hours of use, the belt will show signs of wear. Signs of a worn belt are: squealing when belt is rotating, blades slipping when cutting grass, frayed edges, burn marks and cracks. Replace the belt if any of these conditions are evident. If there is mismatch between the blades, the grass will appear streaked when it is cut.
Figure 35 1. Belt routing Figure 36 5. Install the belt covers. Replacing the Grass Deflector 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. • Never operate the lawn mower unless you install a cover plate, a mulch plate, or a grass chute and catcher. • Make sure the grass deflector is in the down position. 1.
Declaration of Incorporation The Toro Company, 8111 Lyndale Ave. South, Bloomington, MN, USA declares that the following unit(s) conform(s) to the directives listed, when installed in accordance with the accompanying instructions onto certain Toro models as indicated on the relevant Declarations of Conformity. Model No. Serial No.
International Distributor List Distributor: Country: Phone Number: Distributor: Phone Number: 57 1 236 4079 Colombia Japan 81 3 3252 2285 Czech Republic 420 255 704 220 420 255 704 Slovakia 220 Argentina 54 11 4 821 9999 Russia 7 495 411 61 20 Ecuador 593 4 239 6970 Finland 358 987 00733 Agrolanc Kft Balama Prima Engineering Equip. B-Ray Corporation Hungary Hong Kong Korea 36 27 539 640 852 2155 2163 82 32 551 2076 Maquiver S.A. Maruyama Mfg. Co. Inc. Mountfield a.s.
Toro General Commercial Product Warranty A Two-Year Limited Warranty Conditions and Products Covered The Toro Company and its affiliate, Toro Warranty Company, pursuant to an agreement between them, jointly warrant your Toro Commercial product (“Product”) to be free from defects in materials or workmanship for two years or 1500 operational hours*, whichever occurs first. This warranty is applicable to all products with the exception of Aerators (refer to separate warranty statements for these products).
