Gravely Pro-Turn 991200 Owner's And Operator's Manual page 21

• 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
CAUTION: Make sure all
hardware is tight, all safety
devices are in place and all
adjustments are made correctly.
1. Check Safety Interlock System
If this system does not function as described
do not operate until repairs are made.
2. Check Air Cleaner
Check air filter for dirt. Clean as required.
Follow Engine Manual Maintenance
Schedule.
3. Check Engine Fuel and Crankcase
Oil
Check and add fuel if required. Check that
engine crankcase oil is full. Follow Engine
Manual Maintenance Schedule.
4. Check Tire Pressure
See Specifications on page 39 for correct tire
pressure.
5. Check Hydraulic Fluid Level
See Check Hydraulic Fluid Level on page 25.
6. Adjust Seat
Be sure all controls can be reached safely
from operator's position.
7. Set Cutting Height
Make sure the deck is set to the correct
cutting height.
STARTING AND SHUT OFF
CAUTION: Read entire
Owner/Operator Manual, Clutch
Manual, and Engine Manual first.
DO NOT attempt to start engine at
this time.
To start the engine:
1. Make sure the steering levers are in
neutral.
2. Put the PTO switch in the Off position.
3. Engage parking brake.
4. If the engine is cold, move the choke
control to the On position. If the engine
is warm or hot, do not use choke.
5. Move the throttle to 3/4 Fast position.
See Engine Manual for detailed
instructions.
6. Put the ignition key in the switch and
turn it to the Start position.
7. As soon as the engine starts, release the
key.
8. Move the choke control to the Off
position from the Choke position. Wait
until the engine is running smoothly
before operation.
To stop the engine:
1. Bring the steering levers to neutral.
Disengage the PTO and engage the
parking brake.
2. Move the throttle lever to the Slow
position.
3. Turn the ignition key to the Off position.
STOPPING IN AN EMERGENCY
WARNING: Operating unit on
slopes may lead to loss of steering
control. When operating on slopes
be prepared to react to an
emergency situation.
1. Return steering levers to neutral
position.
2. Immediately set parking brake.
3. Turn off PTO and engine.
TO MOW WITH UNIT
Operate the unit only when seated in the
operator's position.
1. Start the engine. Let the engine warm
until it is running smoothly.
2. Release parking brake.
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