Gravely 310, 990018, 990020 Owner's/Operator's Manual page 9

Throttle Lever
Move lever to FAST (1) position to increase
1
engine speed. Move lever to SLOW (2)
position to decrease engine speed.
2
OE0340
Choke
Pull choke control out to start a cold engine.
Push control in as engine warms up.
OE0590
Handlebar
Turn handlebar clockwise to steer right. Turn handlebar
counterclockwise to steer left.
NOTE: Unit spins in a zero turn radius when handlebar is
turned to maximum position in either direction.
Speed and Direction Control Pedal
Press pedal forward (1) to move tractor
forward.
1
Press pedal backward (2) to move the
tractor backward.
Remove foot from pedal to return unit
2
to neutral.
OF3390
Deck Lift Lever
Pull lever backwards to LIFT (3)
1
position to lift mower.
Place lever in HOLD (2) position
to hold mower in current position.
Push lever forward to FLOAT (1)
2
position for mowing.
IMPORTANT: Disengage PTO
before pulling lever back to LIFT.
3
Cut Height Lever
OF3310
To raise attachment, move lever
backward.
To lower attachment, move lever
forward.
To hold attachment in place, release
lever.
OL4810
Oil Pressure Warning Light
If light turns on during operation:
1. Stop unit and engine.
2. Wait five minutes.
3. Check engine oil level and fill if
OG0601
necessary.
4. Check for external damage to engine.
To test oil pressure warning light, turn ignition key to the
run position. Light should turn on.
Parking Brake Lever
Pull lever backward to engaged (2)
position to activate parking brake.
Push lever forward in disengaged (1)
1
position to deactivate parking brake.
2
OF1332
PTO Switch
The power take-off switch is used to engage
and disengage the attachment.
1
Lift switch to engage (1) attachment.
Push switch down to disengage (2)
2
attachment.
OE0261
Hourmeter
Records total time key is in RUN position.
Seat Adjustment Lever
Pull lever out and slide seat to desired position. Release
lever to lock seat in position.
Seat Suspension Adjustment Knob
To make seat more firm turn knob clockwise. To make
seat less firm turn knob counterclockwise.
Transmission Bypass Valve
The transmission bypass valve disengages the
transmission to allow manual movement of unit. See
Moving Unit Manually.
FILLING FUEL TANK
WARNING: AVOID INJURY. Read and
understand Fuel Safety Rules before
proceeding.
To add fuel to fuel tank:
1. Place unit in an 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 fuel cap.
IMPORTANT: See engine manual for correct type and
grade of fuel.
GB - 9