FORM NO. 3322-897 62” Deck Idler Kit – Low Speed For Model 74208 Serial No. 890001 and Up For Model 74203 Serial No. 990001 to 994000 Part No. 100–4251 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 Installing Deck 1. Remove existing carriage bolt and nut (Fig. 5) 1. Remove push arms from machine frame. IMPORTANT: Remove only this specific bolt to install belt guide (Fig. 5). 2. Adjust push arms. Loosen jam nut and rotate ball joint counterclockwise, one turn at a time. Adjust each side the same amount. Adjust the length of push arms to 15–5/16 (389mm) (Fig. 11). 3. Reinstall push arms to machine frame. 4.
Installation Instructions Removing Old Drive Belt Idler Arm 1. Remove the spring from the old idler arm (Old idler arm not shown) (Fig. 7). 2. Remove the old idler arm from the machine frame. Save parts for installing new idler arm (Old idler arm not shown) (Fig. 7). 3. Remove the spring and hardware from the machine frame. Discard old washer (Fig. 7). 4. Remove the pulley, bushing, and hardware from idler arm (Old idler arm not shown) (Fig. 6). 3. Install new rear idler arm to machine frame.
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 8. 2. 1 Install clutch retaining strap and plug clutch terminal into main wire harness (Fig. 8). Figure 9 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. 11). Note: Adjusting Belt Guide 1. Loosen belt guide (Fig. 12). 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.12). Increase tension by lengthening the push arms and decrease tension by shortening push arms.
Installation Instructions 8
