Husqvarna Z454 Owner Manual - Page 26

MAINTENANCE Adjusting the Mower Deck Leveling Deck Adjust the deck while the mower is on a level surface. Make sure the tires are inflated to the correct pressure. See Tire Pressures in Maintenance section. If tires are under or over inflated, the deck cannot be correctly adjusted. Faulty mower deck adjustments will cause an uneven mowing result. Four slots control the height and pitch of the mower deck. Adjust the deck slightly higher in the rear. NOTE: To ensure precision in the leveling procedure, the mower deck drive belt must be installed before leveling the deck. 1. Wear heavy gloves. Turn each outer blade tip to align with the deck side to side. 2. Measure from the floor surface up to the bottom of the blade tip on the discharge side of the mower deck. Record this measurement. Move to the opposite side; check that measurement is the same. If adjustment is required, loosen the locknut on the top of the rear links and adjust until both side to side measurements are equal. Retain measurement. 4. Confirm measurements once again. The blade tip height must be equal side-to-side. In the rear, blade tips must be 1/8" to 3/8" higher than the front measurement. In the front, blade tips must be equal from side-to-side. NOTE: This will place the mower deck in a standard measurement position. Depending on the type of grass being mowed or environmental conditions, more adjustments can be necessary to get the desired cut. Powertrain Regular external maintenance of the Powertrain™ should include the following: 1. Check each transmission oil level. When the engine is cold, the oil level should touch the bottom of each transmission oil dipstick. 2. Examine the vehicle drive belt, idler pulley(s), and idler spring(s). Ensure that no belt slippage can occur. Slippage can cause low input speed to the transmissions. 3. Examine each transmission cooling fan for broken or bent blades. Remove any obstructions such as grass clippings, leaves or dirt. 4. Examine the park brake and vehicle linkage to make sure they work correctly. 5. Examine the vehicle control linkage to the directional control arm on the transmissions. Also, make sure the control arm is correctly fastened to the trunnion arm of the transmissions. 6. Examine the bypass levers on the transmissions and make sure they rotate freely. IMPORTANT INFORMATION Any servicing dealer attempting a warranty repair must have prior approval before conducting maintenance of a Parker® product, unless the servicing dealer is a current Authorized Parker™ Service Center. 3. Turn both outer blades to align with the deck front-to-rear. Reposition the front mounting bolts up or down until the rear blade tips are positioned 1/8" to 3/8" higher in the rear than the front blade tips. 26