Ariens Classic LM 21 Owners Manual - Page 20

SERVICE AND ADJUSTMENTS CAUTION: AVOID INJURY. Read and understand the entire Safety section before proceeding. SERVICE POSITION Put unit into service position for easy access to underneath the deck. CAUTION: Avoid fuel spills. Follow steps below to help prevent fuel spills. If fuel leaks into air cleaner, replace air cleaner. ALWAYS clean up any spilled fuel. 1. Place unit on a flat, level surface. 2. Disconnect spark plug wire. 3. Remove fuel cap, place a piece of plastic bag over the opening and tighten cap securely. 4. Tip unit onto right side. Make sure unit is secure and will not tip over. IMPORTANT: Remove plastic from fuel cap after unit is upright and service is complete. HANDLEBAR HEIGHT To adjust (Figure 14): 1. Place a hole at the bottom of the braces over the pins on the bracket. NOTE: To fold handlebars flat for storage, pull the speed control rod (if equipped) all the way back, disconnect braces from support bracket, and fold handlebar forward. Do not bend speed control rod. DRIVE BELT REPLACEMENT (Self-Propelled Models) To remove drive belt: 1. Disconnect spark plug wire. 2. Set the right rear wheel to its lowest cutting height, and the left rear wheel to the third cutting height. This position provides clearance between friction disc and drive sheave. 3. Remove belt from the idler, then the drive sheave, and finally, the engine pulley (Figure 15). 4. Pull belt through opening under mower pan and over blade. 5. Make sure the idler pulley turns and the idler arm moves freely. 6. Reinstall drive belt in reverse order. IMPORTANT: Be sure the belt seats in sheave and pulley grooves with the idler touching the back (flat) side of belt. 7. Adjust rear wheels to the same cutting height. 6 5 1 Hole 2 4 3 1. Blade 2. Idler 3. Drive Sheave 4. Drive Belt 5. Engine Pulley 6. Bolt, Lock Washer & Flat Washer Pin Figure 15 Figure 14 OM1800 GB - 20