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NOTE: The wheel lock will not release when under load. Do not unlock the wheel while turning. If the wheel lock will not release, turn the unit slightly left or right to relieve axle load and release the axle lock. If remote wheel lock does not lock or unlock properly, adjust or repair before operation (see Remote Wheel Lock on page 27). Scraper Blade The scraper blade allows better contact with the surface being cleared. It also prevents damage to the housing from normal usage. IMPORTANT: DO NOT allow Scraper Blade to wear too far or Auger/Impeller housing will become damaged. Skid Shoes The skid shoes control the distance between the scraper blade and the ground. Adjust skid shoes equally to keep blade level with the ground. Refer to Pre-Start on page 21 for recommended settings. Track Angle (921014, 015, 016) (Figure 21) The track angle can be adjusted to position the auger housing for level clearing, deep cutting or transport. Squeeze the handlebar trigger and press down on the handlebars to move the auger housing into an up position. Release the trigger to hold the position. Lift up on the handlebars and squeeze and release the handlebar trigger to move the auger housing into a down position. Figure 21 Deep Cutting OS7111 Transport Normal FILLING FUEL TANK WARNING: AVOID INJURY. Read and understand the entire Safety section before proceeding. Fuel Shut-Off Valve IMPORTANT: The fuel shut-off valve MUST be in the closed position prior to transporting the unit. The fuel shut-off valve has two positions: Figure 22 Open Position: Use this position to run the unit. Closed Position: Use this position to service, transport, or store the unit. OS77280 921019, 020 Closed Position: Use this position to service, transport, or store the unit. Open Position: Use this position to run the unit. Figure 23 To add fuel to fuel tank: 1. ALWAYS place unit in open or well- ventilated area. 2. Stop engine and allow to cool. 3. Clean fuel cap and surrounding area to prevent dirt from entering fuel tank. 4. Remove cap. 5. Fill fuel tank to within 1/2 in. (1.2 cm) below bottom of filler neck with unleaded gasoline. NOTE: Refer to Engine Manual for proper fuel type and tank capacity. 6. Replace fuel cap and tighten. 7. ALWAYS clean up any spilled fuel. GASOLINE IMPORTANT: ALWAYS use gasoline that meets the following guidelines: • Clean, fresh gasoline. • A minimum of 87 octane/87 AKI (91 RON). High altitude use may require a different octane. Consult your engine manual. • Gasoline with up to 10% ethanol (gasohol) or up to 15% MTBE (methyl tertiary butyl ether) is acceptable. • Use of any gasoline other than those approved above may void the engine warranty. If the pumps are not marked for the content of alcohol or ethers, check ethanol and MTBE levels with the fuel supplier. • Do not modify the fuel system to use different fuels. • Never mix oil and gasoline. NOTE: All gasoline is not the same. If the engine experiences starting or performance problems after using a new gasoline, switch to a different fuel provider or fuel brand. IMPORTANT: Excessively oxygenated or reformulated fuels (fuels blended with alcohols or ethers) can damage the fuel system or cause performance problems. If any undesirable operating problems occur, use a gasoline with a lower percentage of alcohol or ether. Fuel Stabilizer Gasoline left in the fuel system for extended periods without a stabilizer will deteriorate, resulting in gum deposits in the system. These deposits can damage the carburetor and the fuel hoses, filter and tank. Prevent deposits from forming in the fuel system during storage by adding a quality fuel stabilizer to the fuel. Follow the recommended mix ratio found on the fuel stabilizer container. PRE-START 1. Frozen Impeller IMPORTANT: Before starting engine, check impeller to be sure it is not frozen. To check impeller: 1. With ignition key switch in “Stop” position, squeeze Attachment Clutch Lever to Engaged position. GB - 21 2. Pull Recoil Starter Handle. 3. If Impeller is frozen, (cannot pull Starter Handle) move unit to a heated area and thaw to prevent possible damage. 2. Check Function of Clutches If clutches do not engage or disengage properly, adjust or repair before operation. See Attachment Clutch/Brake Adjustment on page 30 and Traction Drive Clutch Adjustment on page 32. 3. Check Dual Handle Interlock Without the engine running, press down (engage) both clutch levers. Release attachment clutch lever. Attachment clutch should remain engaged until traction clutch lever is released, then both clutches must disengage. If clutches do not engage or disengage properly, adjust or repair before operation (see Attachment Clutch/Brake Adjustment on page 30 and Traction Drive Clutch Adjustment on page 32). 4. Check Remote Wheel Lock (921012, 013, 020) Squeeze and release the remote wheel lock control to lock the left wheel for better traction when throwing snow or to unlock the left wheel for easier steering. If remote wheel lock does...

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