110-2304 Narrow Wiehle Flex 18 2.5 inches (63.5 mm)AluminumStandard Front110-2305 Wide Wiehle Flex 18 2.5 inches (63.5 mm)AluminumMore Penetration110-2306 Full Roller Flex 18 2.5 (63.5 mm) inches Steel Least Penetration110-2303 Rear Roller Flex 18 2.0 inches (50.8 mm)AluminumStandard RearUse the following table and Figure 12 to set the rate of clip.Clip (Refer to Figure 12 for pulley locations.)Drive pulley numberof teethDriven pulley numberof teeth14 Blade Clip inch (mm) 11 Blade Clip inch (mm) 8 Blade Clip inch (mm)27 (standard) 22 (standard) 0.112 (2.9) 0.143 (3.6) 0.197 (5.0)22 22 0.138 (3.5) 0.176 (4.5) 0.241 (6.1)22 27 0.172 (4.4) 0.219 (5.6) 0.301 (7.7)The reel is shipped with one 27 tooth and one 22 tooth pulley. To get a .16 inch (4 mm) clip, you must purchasea 22 tooth pulley. The clip can only be changed on the reel drive (Figure 12). Do not change the drive ratioon the gearbox pulleys.Figure 121. Reel drive belt 3. Driven pulley2. Drive pulley8