Form No. 3418-834 Rev A 72in Guardian® Recycler® Mower Groundsmaster® 3280-D Traction Unit Model No. 31335—Serial No. 401420001 and Up Model No. 31336—Serial No. 401380001 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. WARNING CALIFORNIA Proposition 65 Warning This product contains a chemical or chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. g243406 Figure 1 Introduction Model No.
Contents Safety ....................................................................... 4 General Safety ................................................... 4 Safe Operating Practices.................................... 4 Safety and Instructional Decals .......................... 5 Setup ........................................................................ 7 1 Securing the Grass Deflector ........................... 8 2 Installing the Lift Arms to the Traction Unit .......................................
Safety • Become familiar with the safe operation of the This machine has been designed in accordance with EN ISO 5395-3:2013 and ANSI B71.4-2017. • The owner/operator can prevent and is responsible General Safety • Wear appropriate clothing, including eye equipment, operator controls, and safety signs. for accidents that may cause personal injury or property damage. protection; substantial, slip-resistant footwear; long pants, and hearing protection. Tie back long hair and do not wear loose jewelry.
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 missing. decal93-6697 93-6697 1. Read the Operator's Manual. 2. Add SAE 80w-90 (API GL-5) oil every 50 hours. decal107-1622 107-1622 Model 31336 only decal93-7818 93-7818 1. Warning—read the Operator's Manual for instructions on torquing the blade bolt/nut to 115 to 149 N∙m (85 to 110 ft-lb).
decal108-1988 108-1988 1. Belt routing decal120-6604 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. 3. Cutting/dismemberment hazard of foot, mower blade—stay away from moving parts, keep all guards and shields in place. decal115-4505 115-4505 1. Warning—read the Operator's Manual. 2. Tipping hazard—lower the cutting unit when driving down slopes.
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. Right lift arm Left lift arm 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 gearbox. No parts required – Grease the machine. Media and Additional Parts Description Use Qty.
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, install the Cutting Unit Alignment Kit (Part No. 120-6599) to mounting the cutting unit to the traction unit. 1 Securing the Grass Deflector g018264 Figure 3 Model 31336 Only No Parts Required 1. Grass deflector 4. Place the left J-hook end of the spring behind the deck edge. 2. Spring 5. Spring installed 3.
7. Hook the brake return spring to the tab on the lift arm (Figure 4). g012393 Figure 4 1. Pivot pin 4. Brake return spring 2. Lift arm 3. Pivot bracket 5. Tab 8. Install the wheel and tire assembly. Torque the wheel nuts to 102 to 108 N∙m (75 to 80 ft-lb). 9. Repeat the procedure on the opposite side of the machine. g018216 Figure 5 3 1. Castor arm bracket 2. Hairpin cotter 3. Clevis pin Connecting the Lift Arms to the Cutting Unit 4.
Product Overview Specifications Note: Specifications and design are subject to change without notice. g012230 Figure 6 1. PTO shaft 2. Bolts and locknuts 3. Gear case 4. Roll pin 2. Secure them with a roll pin. 3. Tighten the bolts and nuts. 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.
Note: The rear castor fork assembly does not detected, reverse the machines direction to pull any clippings away from the wheel/fork area. need to be removed from the castor arm to change the height of cut. Front Castor Wheels 1. 2. 3. Remove the tensioning cap from the spindle shaft (Figure 8) 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.
Adjusting the Anti-Scalp Rollers Model 31336 Only Whenever you change the height-of-cut, 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 14). g012332 Figure 12 1.
Position B the cam lock. Adjust the cam lock until you achieve the desired locking pressure. Use this position when bagging. Always align it with the blower opening. g008961 g016477 Figure 15 1. Unlock lever 2. Rotate the cam lock to increase or decrease locking pressure Figure 17 3. Position the baffle 4. Lock lever Position C This is the full open position.
3. 4. 5. 6. Rotate 1 blade so that it points straight forward. Use a short ruler to measure from the floor to the front tip of the blade. Rotate the blade tip to the rear and measure from the floor to the tip of the blade. Subtract the front dimension from the rear dimension to calculate the blade pitch. Adjust the shims, on the front or rear castor arms, to attain the required cutting unit pitch (Figure 19). 6.
Operating Tips Mowing only when the 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 the direct sunlight can cause 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 gearbox lubricant. • Lubricate the grease fittings. Lubricate the grease fittings immediately after every washing.
Lubrication Service Interval: Every 50 hours Lubricate the grease fittings immediately after every washing. The machine has grease fittings that you must lubricate regularly with No. 2 lithium grease. 1. Lubricate the following areas: • Castor fork shaft bushings (4) (Figure 20). g012235 Figure 22 1. Lift arm 3. Hairpin cotter 2. Clevis pin 4.
g012237 Figure 25 g010548 1. Lift arm 3. Hairpin cotter 2. Clevis pin 4. Castor arm bracket Figure 24 3. 1. Dipstick/fill plug Roll the cutting unit away from the traction unit, separating the male and female sections of the PTO shaft (Figure 26). Removing the Cover Important: The fasteners on the covers of this machine are designed to remain on the cover after removal.
4. 5. Press the lift switch forward to the FLOAT position. Push a lift arm down until the holes in the lift arm line up with the holes in the castor arm bracket and you can insert the height-of-cut rod into the lift arm pads (Figure 27). Secure the lift arm to the castor arm with 2 thrust washers, a clevis pin, and a hairpin cotter, position the thrust washers between the lift arm and the castor arm bracket (Figure 27), and insert end of cotter pin into the slot in the castor arm tab to retain cotter pin.
3. Rotate the opposite end of the blade forward. Measure between the cutting unit and cutting edge of the blade at the same position as in step 2 The difference between the dimensions obtained in steps 2 and 3 must not exceed 3 mm (1/8 inch). If the dimension exceeds 3 mm (1/8 inch), replace the blade because it is bent; refer to Removing and Installing the Blade(s) (page 21).
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 toward you or bystanders, resulting in serious personal injury or death. g006530 Figure 32 1. Cutting edge 3. Wear/slot forming 2. Curved area/sail 4. Crack • Inspect the blade periodically for wear or damage. WARNING • Do not try to straighten a blade that is bent.
Replacing the Drive Belt 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 occur. 1. Lower the cutting unit to the shop floor. Remove the belt covers from the top of the cutting unit and set the covers aside. 2.
g000977 Figure 37 1. Bolt 5. Spring installed 2. Spacer 6. Grass deflector 3. Locknut 7. L-end of spring, place behind deck edge before installing bolt 4. Spring 8.
Notes:
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.
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The Toro 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).
