Husqvarna W436 Operation Manual - Page 23

Belt Replacement 48" Deck Belt 1. Turn off the engine, remove the ignition key and allow unit to cool. 2. Remove deck cover. 3. Turn the deck belt idler spring adjusting nut to relieve tension from the idler spring. 4. Remove deck belt from deck sheaves. 5. Remove mower drive belt from deck sheaves and mower clutch sheave. 6. Install new mower drive belt on deck sheaves and mower clutch sheave. 7. Tighten the adjusting nut to tension the belt. Tighten the nut until the idler spring compresses to 2 in. ± 1/8 in. (5.1 cm ± .32 cm). 8. Replace deck belt. 9. Replace deck cover and secure. NOTE: Make sure wing knobs do not interfere with cutting height adjustments. Mower Blades Adjust Nut 5. Install new deck belt. 6. Tighten the adjusting nut to tension the belt. Tighten the nut until the idler spring compresses to 2 in. ± 1/8 in. (5.1 cm ± .32 cm). 7. Replace deck cover. Mower Drive Belt NOTE: Deck belt must be removed before removing the mower drive belt. 1. Turn off the engine, remove the ignition key and allow unit to cool. 2. Remove deck cover. 3. Remove deck belt. 4. Turn the mower drive belt idler spring adjusting nut to relieve tension from the idler spring. CAUTION! Blades are sharp. Protect your hands with gloves and/or wrap blades with a heavy cloth when handling. On multi-blade mowers, rotation of one blade will cause all blades to rotate. Blade Removal 1. Turn off the engine, remove the ignition key and the ignition wire from the spark plugs. 2. Block the blades with a wooden block to prevent blade rotation. 3. Remove the bolts, blades and spacers (number of spacers will vary depending on cutting height) from the spindle shafts. Spacers Blade Adjust Nut Blade Bolt - 23 -