Form No. 3326–935 Rev A 42 Rear Discharge Mower Wheel Horse Classic Garden Tractor Attachment Model No. 78350—Serial No.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Slope Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety and Instruction Decals . . . . . . . . . . . . . . . . . Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loose Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Attaching the Adjustable Link . . . . . . . . . . . . . . . . Installing the Mower . . . . . . . . . . . . . . . . . . . . . . .
Slope Chart 3
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.
Setup Note: Determine the left and right sides of the machine from the normal operating position. Loose Parts Note: Use the chart below to identify parts used for assembly. QTY. DESCRIPTION Height-of-cut lever 1 Spring 1 V belt 1 Idler assembly 1 Belt cover 1 Locknut 1 Operator’s Manual 1 USE Install height-of-cut lever Installing the mower Read before operating Attach Height-of-Cut Lever Attaching the Adjustable Link 1. Loosen nuts securing quadrant to mower(Fig. 2). 1.
2. Turn the front wheels fully to the left and raise attachment lift lever all the way to the latched position; refer to tractor Operator’s Manual. 7. Rotate front mounting shaft so fork faces up and align so spacers are between mid-mount hitch plates (Fig. 6). 8. Lift mower with attachment lift and guide fork to capture hitch rod (Fig. 6). Close mid-mount hitch lock handle. 3. Open front and mid-mount hitches by pushing release button and moving lock handles forward (Fig. 4).
2 Front m–2833 3 4 7 5 1 2 6 3 1 m–5508 Figure 8 1. 2. 3. 4. V pulley Flat pulley Upper mower pulley Spacer 4 4 5. Belt cover 6. Locknut 7. Knob Figure 9 1. Blade front to rear 2. Measure front blade tip 3. Measure rear blade tip 4. Measure here 14. Install belt cover (Fig. 16). 5. To adjust front-to rear blade slope turn locknut on rear adjustable link (Fig. 10).
2. Adjust lift chain by turning trunnion on eyebolt in rear hole of tractor lift (Fig. 11). Turn trunnion clockwise to raise or counterclockwise to lower mower. Engaging the Power Take Off (PTO) Note: Transport level stops are normally in the bottom of the slot, however they can be adjusted up for side-to-side level when extra weight from a grass catcher is on one side. 2. Pull the power take off (PTO) to the on position (Fig. 12). 1. Move throttle to fast position. 3.
2. Pull attachment lift lever rearward, to release lift pressure, and push the button on top to release the latch. Move lift lever forward to lower attachment. 2 2 1 1 3 m–2454 Figure 14 1. Lift lever UP m–2514 2. Lift lever DOWN Figure 13 1. Lift lever 2. Button 3. Dial-A-Height Adjusting Height-of-Cut The rear gauge wheels are adjusted in different hole location for 1-1/2 to 3-1/2 in. (4–9 cm) height-of-cut. Operating the Attachment Power Lift 1.
Removing the Mower 2 1. Park the machine on a level surface, disengage the power take off (PTO), set the parking brake, and turn the ignition key to off. Remove the key. 3 1 2. Remove the two knobs and belt cover from the tractor (Fig. 16). m–2810 2 Figure 18 1 1. Pulley assembly 2. Front hitch 2 3. Latch 6. Raise attachment lift lever to the mounting position; refer to the tractor Operator’s Manual. m–5509 7. Open mid-mount hitch lock handle.
9. Turn the front wheels fully to the left and raise attachment lift lever all the way to the latched position; refer to tractor Operator’s Manual. Slide the mower out from under the chassis to the the right side. Ground Speed Note: Save all hardware, washers and hairpin cotters for use when installing deck. Avoid Cutting Too Low To improve cut quality, use slower ground speed.
Recommended Maintenance Schedule Maintenance Service Interval Maintenance Procedure Each Use • Mower Housing—clean 5 Hours • Cutter Blade—check • Mower Housing—clean 25 Hours • Tires—check pressure • Grease—Mower deck and wheels At Storage Important • • • • • • Cutter Blade—check Grease–Mower deck Belts—check for wear/cracks Mower Housing—clean Chipped Surfaces—paint Tires—check pressure Refer to your engine operator’s manual for additional maintenance procedures.
3. Inspect the cutting edges (Fig. 21). If the edges are not sharp or have nicks, remove the blade(s) and sharpen them; refer to Sharpening the Blade(s), page 14. 5 4. Inspect the blade(s), especially the curved area (Fig. 21). If you notice any damage, wear, or a slot forming in this area (Fig. 21), immediately install a new blade. 2 3 4 1 m–5617 Figure 22 2 1. Nut 2. Flat washer—thick 3. Blade 1 3 Sharpening the Blades 1. Use a file to sharpen the cutting edge at both ends of the blade (Fig. 23).
Where to Add Grease 1. Lubricate the blade spindles and gauge wheel bearings (Fig. 26). 2 1 Figure 24 1. Blade 2. Balancer Installing the Blade(s) 1. Install the washer, blade, flat washer, and the blade nut (Fig. 25). Important The curved part of the blade must be pointing toward the inside of the mower to assure proper cutting. M–2829 2. Tighten the bland nut to 80-100 ft.–lb. (109-136 N m). Figure 26 5 Servicing the Blade Drive Belt 4 3 Removing the Blade Drive Belt 2 1.
3. Install the mower; refer to Installing the Mower, page 6. Replacing the Power Take Off (PTO) Belt Replacing the PTO Belt on 2001 and Newer Models 3 8 4 7 5 1 2 6 The following instructions are for 2001 and newer models only. m–5508 Figure 29 1. 2. 3. 4. 1. Remove the two knobs and belt cover from the tractor (Fig. 28). 2 V pulley Flat pulley Top center mower pulley Spacer 5. 6. 7. 8. Belt cover Locknut Knob Pulley assembly 1 4. Unplug the clutch connector (Fig. 30). 5.
Replacing the PTO Belt on 2000 and Older Models 4 5 The following instructions are for 2000 and Older Models only. 1. Remove the two knobs and belt cover from the tractor (Fig. 32). 3 2 1 1 2 m–5539 2 Figure 30 1. PTO clutch 2. PTO stop 3. Inside belt groove 4. Belt guide 5. Clutch connector m–5509 Figure 32 1. Belt cover 10. Route belt around V and flat pulleys and loop over top center mower pulley (Fig. 31). 2. Knob 2. Turn knob on pulley assembly clockwise to loosen belt (Fig. 33). 11.
6. Assemble yoke and engagement plate and attach locking clevis pin, trunnion and hairpin cotters to secure (Fig. 34). 10. Install belt cover (Fig. 32). Cleaning and Storage 1 2 1. Clean dirt and chaff from the outside of the engine’s cylinder head fins and blower housing. Also remove grass clippings, dirt, and grime from the external parts of the entire machine, especially the engine, shrouding, and the top of the mower. 3 5 4 7 Important You can wash the machine with mild detergent and water.
Troubleshooting Problem Abnormal vibration. Blade(s) does not rotate. g height. g Uneven cutting Possible Causes Corrective Action 1. Cutting blade(s) is 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.
