Poulan PR550Y22R3 Owner Manual - Page 7

SERVICE AND ADJUSTMENTS • Position the blade adapter on the engine crankshaft. Be sure key in adapter and crankshaft keyway are aligned; and that the drive belt is inside the tabs of the belt retainer. Blade adapter Key Crankshaft keyway Lockwasher Blade 21" (53cm) HI-VAC MODELS: Drive cable Housing anchor hole Drive Drive Return pulley belt spring Idler arm assembly PIVOT Blade bolt Hardened washer Trailing edge Belt retainer • Route the other end of the new drive belt through hole in housing. • Return mower to upright position. • Install new belt on gearcase pulley. • Reinstall belt keeper and spring. • Reinstall drive cover. NOTE: Always use factory approved belt to assure proper fit and long life. • Turn lawn mower on its side with air filter and carburetor down. • Reinstall blade and blade adapter. 4. Pivot idler arm assembly to slacken drive belt, then remove drive belt from drive pulley, belt keepers and idler arm. 5. Turn lawn mower on its side. Make sure air filter and carburetor are up. NOTE: Before tipping lawn mower to remove drive belt, empty fuel tank by running engine until fuel tank is empty. 6. Remove screw securing debris shield. Note that the debris shield has a tab which fits into a gap in the housing. Crankshaft Tab Housing hole Blade adapter HI-VAC MODELS: 1. Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug. 2. Remove screws retaining drive cover and remove drive cover from lawn mower housing. 3. Remove drive cable from anchor, then detach it and return spring from idler arm assembly. 18" (45cm) HI-VAC MODELS: Drive cable anchor Return spring Drive belt Drive pulley Belt keeper PIVOT Housing hole Idler arm assembly Hardened washer Debris shield Blade bolt Screw Trailing edge Lock-washer 7. Use a wood block between blade and mower housing to prevent blade from turning when removing blade bolt. NOTE: Protect your hands with gloves and/or wrap blade with heavy cloth. 8. Remove blade bolt. 9. Remove blade, attaching hardware (bolt, lock washer, hardened washer), blade adapter and debris shield as one assembly. 10. Remove drive belt from blade adapter and debris shield; discard old belt. 30 ASSEMBLY INSTALL STARTER ROPE (MODELS EQUIPPED WITH T-KNOB) • Loosen T-knob. • Hold control bar against upper handle. • Slowly pull engine starter rope out until rope will slip into loop of rope guide. • Tighten T-knob. INSTALL REAR WHEELS ("HIGH WHEEL" MOWERS ONLY) Some high wheel models require washers which will be provided in a parts bag. If provided, install washers on the axle first as shown. • Install one (1) rear wheel on the axle of rear wheel adjuster. • Install 3/8-16 locknut and tighten se- curely. • Repeat procedure for other rear wheel. Axle O-Ring Control bar Upper handle Flanged locknut Washer Wheel assembly Rope guide T-Knob Engine starter rope ASSEMBLE GRASS CATCHER (REAR DISCHARGE MOWERS ONLY) IMPORTANT: If your model lawn mower is mulcher ready, the mulcher plate or plug must be removed before using mower as a bagger. To convert mower to bagging or discharging, see the Operation section in this manual. Look at the different grass catcher illustrations that follow. Determine which type of grass catcher you have and follow the appropriate instructions. Frame handle Vinyl bindings 7 Frame opening