FORM NO. 3322-899 62” Deck Idler Kit – High Speed For Model 74203 Serial No. 990001 to 991000 For Model 74212 Serial No. 994001 to 995000 Part No. 100–4252 INSTALLATION INSTRUCTIONS Loose Parts Note: Use the chart below to identify parts for assembly. DESCRIPTION QTY.
Installation Instructions Removing Drive Belt Removing Deck 1. 1. Lower the deck on to wood blocks. 2. Remove the four bolts at the bottom of chains that are attached to deck (Fig. 2). Remove the clutch retaining strap from machine frame and unplug clutch terminal from wire harness (Fig. 1). 3. Remove the nuts and bolts holding pins in the push arm (Fig. 2). Note: 4. Remove pins (Fig. 2). 5. Raise height of cut lever and slide deck out (Fig. 2).
Installation Instructions Installing Front Idler Pulley Bracket 1. Installing Front Idler Pulley Remove existing belt guide and hardware and discard (Fig. 3). 2. Align hole in bracket to the hole the belt guard was installed in (Fig. 3). 3. Position belt idler bracket rear edge parallel to the rear edge of deck (Fig. 3). 4. Install one bolt through the bracket and where the belt guide was installed in deck. Install nut and tighten (Fig. 3). 5.
Installation Instructions Install Belt Guide 2 4 1. 1 Remove existing belt guide, carriage bolt, washer, nut and discard (Fig. 5). 5 3 4 1 3 Figure 6 1. New Belt guide 2. New Bolt 3. Nut 2 4. Washer 5. Old Belt Finger Hole Figure 5 1. Existing Belt guide 2. Carriage Bolt 2. 3. Nut 4. Washer Installing Deck 1. Remove push arms from machine frame. 2. Adjust push arms. Loosen jam nut and rotate ball joint counterclockwise, one turn at a time. Adjust each side the same amount.
Installation Instructions Installing Drive Belt 1. Place new drive belt over clutch, around rear idler pulley, installed into rear idler arm assembly, installed into front idler pulley assembly and onto mower top center pulley. 2 IMPORTANT: Check the amount of twist in belt between pulleys. Make sure it is only what is specified in figure 7. 2. 1 Install clutch retaining strap and plug clutch terminal into main wire harness (Fig. 7). Figure 8 1. Center bolt, spring loaded idler 6 2.
Installation Instructions 7. To adjust push arms, remove push arms from machine frame, remove drive belt, loosen jam nut and rotate ball joint counterclockwise, one turn at a time. Adjust each side the same amount (Fig. 10). Note: Adjusting Belt Guide 1. Loosen belt guide (Fig. 11). 2. Rotate the belt guide, so it is 1/8”–1/4” (3–7 mm) away from the vertical side of the PTO belt (Fig.11). Increase tension by lengthening the push arms and decrease tension by shortening push arms.
Installation Instructions 7
Installation Instructions 8
