Ariens Pro 21 Owners Manual - Page 12

Front and Rear Wheels To change cutting height, move cutting height levers one notch at a time on each wheel to set desired height (Figure 7). NOTE: Each wheel on mower must be set at the same height for a level cut. Front Wheel Wheel Adjuster Wheel Drive Control CAUTION: Unit will move forward at engine start if wheel drive control is engaged. ALWAYS release wheel drive control before starting unit. NOTE: Engine must be running for wheel drive to propel unit. To drive forward: Slowly pull the wheel drive control toward the handlebar until you reach a comfortable ground speed. Hold the wheel drive control in this position to maintain the speed. To stop: Release wheel drive control. Wheel Adjuster Rear Wheel Figure 7 OPTIONAL CONTROLS Primer Bulb Push the primer bulb in to add fuel for easier engine start. Figure 8 FILLING THE FUEL TANK 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. GB - 12