Form No. 3326-570 48in Side Discharge Mower for 5xi Garden Tractors Model No. 78449—Serial No.
Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Safety and Instruction Decals . . . . . . . . . . . . . . . . . . . Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Loose Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Assembling the Mower . . . . . . . . . . . . . . . . . . . . . Installing the Mower . . . . . . . . . . . . . . . . . . . . . . Attaching the PTO Drive Belt . . . . . . . . . . . . . . .
Safety and Instruction Decals This machine meets or exceeds the EN 836-1997 and ISO 5395-2001 specifications in effect at the time of production. However, 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.
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. Description Qty. Discharge chute 1 Nylon washer, 3/8 in. 2 Spring 1 Rubber bushing 1 Flat washer, 1/2 in. 1 Locknut, 3/8 in. 1 Cotter pin, 3/4 in. 1 Pulley box 1 PTO drive belt 1 Assembling the Mower Install the discharge chute Install the PTO drive belt 4.
Mower Belt Routing Route the mower belt as shown in Fig. 3. Ensure that you install the belt on the lower mower deck pulley. 1 2 2 1 m–3433 m-3525 Figure 4 Figure 3 1. Clevis pin 2. Hairpin cotter Top View 1. Mower belt 2. Mower deck pulley 4. Attach the pulley box if it is not already on the tractor (Fig. 5). Installing the Mower Preparing the Tractor Install the mower on a level concrete surface. Rougher dirt or lawn surfaces make installation more difficult. 6 1.
Attaching the Mower 1 1. Set the mower wheels for the lowest height of cut. 2. Move the attachment lift to the full up position. 3. From the right side of the tractor, slide the mower under the tractor. 4. Position the mower so that the slots in the side of each of the mower mounting brackets (Fig. 6) are aligned directly below the tractor attachment lift arm. 2 m–3456 3 Figure 7 Left Side of Tractor Shown 1. J-pin 7.
Caution Components under the hood will be hot if the tractor has been running. If you touch hot components you may be burned. Allow the tractor to cool before performing maintenance or touching components under the hood. 2. Release the belt tension release arm on the pulley box housing and swing it out toward you (Fig. 10). 1 m–3521 2 Figure 8 1. Place hand here 9. Turn the lever of the Attach-A-Matic counterclockwise to lock the mower to the tractor (Fig. 9). 4 5 3 1 3 m–5511 Figure 10 1.
5. Hang the belt over the mower, then thread it forward through the belt guide (Fig. 12) on the mower. D. Swing the tension release arm into the pulley box and seat it by moving it into the position shown in Figure 10. 9. Loosen the belt guide bolt (Fig. 14). 2 2 3 4 1 m–3457 m–3465 Figure 12 1. Belt Figure 14 2. Belt guide 1. Belt guide 2. Belt 6. Loop the other end of the belt over the drive pulley of the mower.
Front 1 2 3 3 4 1 2 4 4 m–3474 m–3528 Figure 15 1. Height-of-cut lever 2. Quadrant Figure 16 3. High 4. Low 1. Blade oriented front to rear 2. Measure front blade tip 3. Rotate front tip to rear and measure 4. Measure here (side to side) 3. Adjust the height-of-cut to the desired level (Fig. 15). 4. Release the lever inward to lock it into the quadrant (Fig. 15). 3. Measure the distance from the front tip of the blade (Fig. 16) to the flat surface. 5.
Adjusting the Side-to-Side Blade Cut 3 This optional adjustment is available if necessary to compensate for uneven side-to-side cut. 4 Equalize side-to-side cut by adjusting the two carriage bolts (Fig. 18) on the mower. Check the height of the blade at outside blade tips (Fig. 16). 2 5 1 6 1 m–3518 Figure 19 m–3459 Figure 18 Right Side of Tractor Shown 1. Side-to-side adjustment bolts 1. Indicator 2. Adjustment cam 3. Lift arm 4. Pivot point 5. Lowers front of deck 6.
When the blade tip is in the front position, it should be approximately 1/4 in. (7 mm) lower than when it is in the rear position. 7. To adjust the blade slope, start the tractor, lower the attachment lift to take pressure off the cams, stop the engine, and remove the ignition key. 8. Loosen the cam nuts and equally rotate the left and right cams down to raise the front of the mower, or up to lower it. Tighten the nuts. 3 9. Repeat steps 4 through 8 until the slope of the blade is approximately 1/4 in.
2 2 3 2 1 1 Figure 24 Figure 22 1. Mid Attach-A-Matic button m–5511 m–3457 1. Front Attach–A–Matic button (one on each side) 2. Front Attach–A–Matic latches 2. Mid Attach-A-Matic lever 10. Pull the two spring loaded J-pins from the deck lift arms and twist them slightly so that they stay disengaged (Fig. 23). 3. Pulley box 12. Start the tractor and raise the attachment lift to provide ample clearance to slide out the mower. 13. Stop the engine and remove the ignition key. 14.
Operating the Mower The power take off (PTO) engages and disengages power to the mower. The attachment lift lever raises and lowers the mower. For detailed information on operating your tractor’s controls, refer to the tractor Operator’s Manual. 2 3 Cutting Modes Depending on what you install on your mower, you can use it to side discharge, mulch, or bag grass clippings. 1 1233 Side Discharge Mode Figure 25 1. Wheel 2.
• To improve cut quality, use slower ground speed. For best results on average lawns, operate the engine at full throttle while controlling the ground speed with the transmission. Operate the tractor at 2 to 3.5 MPH (3.2 to 5.6 kms/hr) while mowing grass. Excessive ground speed may result in uneven cutting. • To cut long or wet grass, raise the cutting height and cut the grass. Then, cut the grass again using the lower, normal setting.
Servicing the Blades Note: A block of wood may be wedged between the blade and the mower to lock the blade when you are removing the nut. To ensure a superior quality of cut, keep the blades sharp. For convenient sharpening and replacement, you may want to have extra blades. 3. Inspect all parts. If damage is noticed, install new parts.
Installing the Blades 2. Clean the grease fittings (Fig. 33) with a rag. Important There are two different sizes and shapes of blades. The shorter blade goes into the center spindle. The two longer blades go on the outside spindles (Fig. 32). See figure 31 for the shape difference. 2 1 m–5707 3 Figure 31 1. Outside blade 2. Center blade m–3519 3. Angle on sail of blade Figure 33 3. Scrape any paint off the end of the fittings. Front 4. Connect a grease gun to each fitting (Fig. 33). 5.
2. Remove the pulley cover mounting screws and pulley covers from the blade pulleys (Fig. 35). 2 2 3 1 2 4 5 1 3 m–3458 Figure 34 1. Belt tension release arm 2. Belt tension indicators 3. Belt tension adjustment knob 5 4. Seating position for tension arm 5. Belt tension released 4 m-3525 Figure 35 Top View 1. Pulley cover screw 2. Pulley cover 3. Belt guide 2. Repeat step 1 until the indicators move to the same position. 3.
9. Turn the water off and remove the hose coupling from the washout fitting. 1 Note: If the mower is not clean after one washing, soak it and let it stand for 30 minutes. Then repeat the process. 3 10. Run the mower again for one to three minutes to remove excess water. 2 Warning A broken or missing washout fitting could expose you and others to thrown objects or blade contact. Contact with the blade or thrown debris will cause injury or death. m–3586 Figure 36 1. Washout fitting 2. Coupling 3.
Troubleshooting Problem Abnormal vibration. Blades do not rotate. Uneven cutting g height. g Insufficient transport height. Possible Causes Corrective Action 1. A blade is bent or unbalanced. 1. Install new blades. 2. A blade mounting bolt is loose. 2. Tighten the blade mounting bolts. 3. The engine mounting bolts are loose. 3. Tighten the engine mounting bolts. 4. A loose engine pulley, idler pulley, or blade pulley. 4. Tighten the appropriate pulley. 5. The engine pulley is damaged. 5.
Problem PTO drive belt comes off of pulleys,slips ll li or ffails. il Possible Causes Corrective Action 1. The belt tension is incorrect. 1. Adjust the belt tension. 2. The mower level is incorrect. 2. Adjust the mower level. 3. The blade slope in transport is incorrect. 3. Adjust the blade slope in transport. 4. The mower belt guide is loose or incorrectly adjusted. 4. Adjust and tighten the belt guide. 5. The belt is worn or damaged. 5. Install a new belt. 6. The Pulley is damaged. 6.
