Ariens 911271-Pro21 Specifications Page 12

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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 Ad
Rear Wheel
Figure 7
OPTIONAL CONTROLS
Primer Bulb
Push the primer bulb in to add fuel for easier
engine start.
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.
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
IRON). 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.
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