Ariens Zoom 42 Operation Manual - Page 20

4. Install mower blade on unit (see 1 2 REPLACING MOWER BLADE on page 19). DO NOT Sharpen to this Pattern 3 4 Sharpen to this Pattern 1. Spindle 2. Blade 3. Washer 4. 5/8 in. Nut Figure 12 SHARPENING MOWER BLADE CAUTION: DO NOT sharpen mower blade while on unit. An unbalanced mower blade will cause excessive vibration and eventual damage to unit. Check mower blade balance prior to reinstalling mower blades. NEVER weld or straighten mower blades. 1. Remove mower blade from unit (see REPLACING MOWER BLADE on page 19). Ariens recommends having mower blades sharpened by a professional. Contact your Ariens dealer. Discard mower blade if (figure 13): • more than 1/2 in. (1.27 cm) of metal is removed. • the air lift erosion area is eroded. • the mower blade is bent or broken. Do not change angle of cutting edge or round the corner at the end of mower blade. 2. Sharpen mower blade by removing an equal amount of material from each end of mower blade. 3. Check mower blade balance by sliding mower blade on an unthreaded bolt. If blade is balanced, it should remain in a horizontal position. If either end of mower blade moves downward, sharpen the heavy end until mower blade is balanced. Discard if more than 1/2 in. (1/27 cm) 2 1 1. Air Lift Erosion 2. Cutting Edge Figure 13 SERVICING THE BATTERY NOTE: Unit comes equipped with a maintenance-free battery that requires no regular maintenance except cleaning the terminals. WARNING: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer and reproductive harm. Wash hands after handling. Battery Removal and Installation Remove (Figure 14) 1. Tip seat forward (see TIPPING SEAT FORWARD on page 17). 2. Disconnect negative (-) cable first, then positive (+) cable. 3. Remove battery hold-down bracket and battery from unit. GB - 20