FORM NO. 3318-911 Rev. A \N Z-MASTER 52” Mowers for Zero Radius Tractors Model No. 78461 — 790001 & Up Model No. 78462 — 790001 & Up Operator’s Manual IMPORTANT: Read this manual carefully. It contains information about your safety and the safety of others.
Introduction We want you to be completely satisfied with your new product, so feel free to contact your local Authorized Service Dealer for help with service, genuine replacement parts, or other information you may require. ‘Whenever you contact your Authorized Service Dealer or the factory, always know the model and serial numbers of your product.
Contents Safety and Instruction Decals Assembly Loose Parts . Installing the Grass Deflector (Side Discharge Model) . .. Install Right Hand Gauge Wheel .. Installing the Mower Operation Side Discharge or Mulch Grass Operating the Power Take Off (PTO} .. .. Attachment Lift Adjusting the Height-of-Cut . Adjusting the Gauge Wheel Tips for Mowing Grass Page Maintenance .ovoid i 11 Service Interval Chart .. .. ceases 11 Cutting Blades cease. 11 Correcting Cutting Unit Mismatch .
Safety 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. ON BOTH SIDES OF CUTTING UNIT UNDER DEFLECTOR (Part No. 92-7108) (Part No. 66-6380) ¥ e [ DANGER G et DEFLECTOR IS NOT IN PLACE. L M%: ON DEFLECTOR {Part No. 93~ 1122) ON DEFLECTOR O ENTIRE CATCHER IN PLACE (Part No. 92-7109) DANGER KEEP HANDS and FEET AWAY RIGHT SIDE (Part No.
Assembly Loose Parts Note: Use the chart below to identify parts used for assembly.
Assembly Installing the Grass Deflector (Side Discharge Model) L 1. 2 Install the deflector mounts onto the pivot brackets with the (2) {95 mm) bolts, (2) springs and (2) 3/8” lockouts. Make sure the straight ends of the springs are positioned between the deflector mounts and the grass deflector (Fig. 1). Tighten the knockouts until they contact the pivot brackets (Fig. 1). IMPORTANT: The grass deflector must be spring-loaded in the down position.
Installing the Mower 1. Remove (2} wing nuts and washers on footrest panel and remove panel from frame. 2. Slide mower under traction unit. 3. Secure stabilizer bars to traction unit frame mounts with (2) (32 mm)} clevis pins and (2) hairpin cotters (Fig. 3). 4. Secure stabilizer bars to holes in front mower brackets with (2) (32 mm) clevis pins and (2) hairpin cotters (Fig. 3). Figure 3 1. Drive belt 5 Clevis pin 2. Clutch pulley @2 mm) 3. Frame mount 6. Hairpin cotter 4. Stabilizer bar Assembly 8.
Assembly 9. Lift up on rear of mower. Select proper hole for height-of-cut and install {2) (57 mam) clevis pins in top holes of rear mower brackets. Secure with (2) hairpin cotters. 13" (@576mm) i 02:1270m) Push attachment lift pedal all the way forward and install pedal spring (Fig. 4). Route drive belt around top pulley of mower, idler pulleys on pivot plate (Fig. 3) and the clutch drive pulley. 10. 11, 12.
Operation Side Discharge or Mulch Grass The mower has a hinged grass deflector that disperses clippings to the side and down toward the fort, DANGER POTENTIAL HAZARD # Without the grass deflector or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris. ‘WHAT CAN HAPPEN » Contact with rotating mower blade(s) and thrown debris will cause injury or death.
Operation Attachment Lift The attachment sift (Fig. 8) is used 1o raise and Sower attachments. Raising Attachments 1. Place your foot on the lift pedal (Fig. 8). 2. Push down with your foot, release the lock by rocking the pedal with your heel, then press with your toe to raise the attachment lift (Fig. 89). Remove your foot to hold the attachment in the up, or raised position. Lowering Attachments 1. Place your foot on the lift pedal (Fig. 8). 2.
Adjusting the Gauge Wheel ‘Whenever you change the height-of-cut you must also adjust the height of the gauge wheels, Stop the engine before adjusting the gauge wheel height. 1. Pull the hairpin cotter out of the clevis pin and remove the clevis pin from the gauge wheel plate and mounting bracket (Fig, 10). 2. Reposition the gauge wheel so it's approximately 1/4” to 3/8” above the ground, then insert the clevis pin through the gauge wheel plate and mounting bracket (Fig. 10). 3.
Operation Tips for Mowing Grass Fast Throttle Setting For best mowing and maximum air circulation, operate the engine at “FAST.” Air is required to thoroughly cut grass clippings, so do not set the height-of-cut so low as to totally surround the mower by uncut grass. Always try to have one side of the mower free from uncut grass, which allows air to be drawn into the mower.
Maintenance Service Interval Chart Each 25 | Storage Service Operation Use | Hours | Hours | Service Notes Cutting Blades check X X Belts — check for wear/cracks X Bide Spindle Bearings — grease X Mower Housing ~ clean X X Chipped Surfaces — paint X 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.
Maintenance Inspecting the Blades 1. 1. Tufting Edge Inspect the cutting edges (Fig 11). If the edges are not sharp or have nicks, remove and sharpen the blades. Refer to Sharpening the Blades on page 13, Inspect the blades, especially the curved area (Fig. 11). If you notice any damage, wear, or a slot forming in this area (item 3 in Fig. 11), immediately install a new blade. me 1st Figure 11 3. Wear/slot Forming 2. Curved Area i2 Checking for Bent Blades 1.
I Q7T POTENTIAL HAZARD + A blade that is bent or damaged could break apart and pieces could be thrown at bystanders or at you as you use the mower. WHAT CAN HAPPEN # Pieces of blade that may be thrown would seriously injure or kill you or bystanders. HOW TO AVOID THE HAZARD * Always replace bent or damaged blade with a new blade.
Maintenance Correcting Cutting Unit Mismatch If one cuter blade cuts lower than the other, correct as follows: 1. Stop the engine, set the parking brake, remove the key and disconnect the spark plug wire(s) from the spark plug(s). 2. Adjust the tire pressure in all tires to specifications and check that the blades are not bent. Refer to Checking for Bent Blades on page 12. 3. Set the height-of-cut to the position, Refer to Adjusting the Height-Of-Cut in the Operation section.
Setting the Front-to-Rear Pitch 1. Check the tire pressure. 2. Position the blades fret-to-rear (Fig. 20). Measure at “C” and “D" locations (Fig. 20) from a level surface to the cutting edge of the blades (Fig. 21). 3. The mower should be (3~16 mm) lower in front “C” than in the rear “D™. Front P ® P Figure 20 o Maintenance MEASURE FARO CUTTING EDGE TO A LEVEL SURFACE [ Figure 21 4. To change the front-to-rear pitch, change pin location at center stabilizer mounts on both sides (Fig. 22). 8.
Maintenance Greasing the Bearings The cutting unit mast be lubricated regularly. Refer to the Service Interval Chart on page 11. Grease with No. 2 general purpose lithium base or molybdenum base grease. 1. Stop the engine, set the parking brake, remove the key and disconnect the spark plug wire(s) from the spark plug(s). 2, Grease the fittings on the three spindle bearings (Fig. 24). 3. Grease the pivot plate fitting (Fig. 24).
Maintenance Replacing the Drive Belt 4. Install the new drive belt onto the traction unit PTO clutch pulley and the top groove of the center spindle pulley (Fig. 26). Squealing when the belt is rotating, blades slipping when cutting grass, frayed belt edges, burn marks and cracks are signs of a wom drive belt. Replace the drive belt if any of these conditions are evident. 1. Stop the engine, set the parking brake, remove the key and disconnect the spark plug wire(s) from the spark plug(s). 2.
Maintenance Removing Baffle for Side Discharge (Recycler® Only) A\ DANGER POTENTIAL HAZARD * Without the grass deflector or complete grass catcher assembly mounted in place, you and others are exposed to blade contact and thrown debris.
Replacing the Grass Deflector 1. Remove the lockouts, bolts and springs holding the deflector mounts to the pivot brackets (Fig. 29). 2. If the pivot brackets need to be replaced, remove the carriage bolts and cone lockouts holding the old brackets to the top of the discharge opening, then install the replacement pivot brackets, Make sure the carriage bolt heads are on the inside of the cutting unit (Fig. 29). 3.
Troubleshooting PROBLEM POSSIBLE CAUSES CORRECTIVE ACTION Abnormal vibration. Cutting blade(s) is/are bent or unbalanced. Blade mounting bolt is footie. Engine mounting bolts are loose. Loose engine pulley, idler pulley, or bide pulley. Engine pulley is damaged. Install new cutting blade(s). Tighten blade mounting bolt. Tighten engine mounting bolts. Tighten the appropriate pulley. Contact Authorized Service Dealer. Cutting blade(s) is/are bent. Mower is not level.