GB - 15
CONTROLS AND FEATURES
See figure 5 for Controls and Features locations.
Safety Interlock System
Perform the following tests to ensure the safety interlock
system is working properly. If the unit does not perform as
stated, contact your Gravely dealer for repairs.
IMPORTANT: With the parking brake engaged, the steering
levers must be locked in neutral.
IMPORTANT: With the parking brake disengaged, the
engine must not start and the engine must shut off if the
operator leaves the seat.
Ignition Switch
Operate the ignition switch with the
removable key. The switch has three
positions: Off (1), Run (2) and Start (3).
See STARTING AND SHUTTING OFF
ENGINE on page 17 for detailed
instructions on how to start engine.
Choke Control (992111, 113, 115, 117, 124, 127, 128,
129, 130, 131, 132, 133, 134, 135, 139, 145)
Use to start a cold engine. Push choke lever
forward to start a cold engine. Pull the choke
lever to the rear when the engine is warm.
Throttle Lever
Changes the speed of engine.
Fast (1) – Increases engine speed.
Slow (2) – Decreases engine speed.
Power Take Off (PTO) Switch
Engages (1) and disengages (2) mower
blades.
Oil Pressure Light (992111, 115, 121, 123, 125,126,
127, 128, 129, 131, 132, 133, 136, 137, 138, 145)
Indicates when engine oil pressure is low.
NOTE: It does not indicate engine oil level.
See TROUBLESHOOTING on page 31 or
refer to Engine Manual for details.
Oil Pressure / Coolant Temperature Light (992113,
117, 124, 130, 134, 135, 139)
Indicates when engine oil pressure is low or engine coolant
temperature is too high.
See TROUBLESHOOTING on page 31 or refer to Engine
Manual for details.
Charging System Light (992121, 123, 125, 126, 136,
137, 138)
Indicates when the charging system is not charging the
battery.
Glow Plug Light (992121, 123, 125, 126, 136, 137,
138)
Indicates when the engine glow plugs are energized. Glow
plugs energize for approximately 5 seconds when the key
switch is turned to the Run position.
Fuel / Water Separator Light (992121, 123, 125, 126,
136, 137, 138)
Indicates when the fuel/water separator filter needs to be
replaced (refer to Engine Manual).
OPERATION
WARNING: AVOID INJURY. Read and understand
entire Safety section before proceeding.
WARNING: Safety interlock system failure and
improper operation of unit can result in death or
serious injury. Test this system each time the unit is
operated. If this system does not function as
described, do not operate until repairs are made.
Test
Steering
Levers
PTO
Parking
Brake
Engine
STARTING INTERLOCK
1
Neutral
Off
Engaged
Starts
2
Neutral
On
Engaged
Doesn’t Start
3
Neutral
Off
Disengaged
Doesn’t Start
OPERATING INTERLOCK (ENGINE ON)
4*
Neutral
On
Engaged
Shuts Off
5*
Neutral
Off
Disengaged
Shuts Off
6*
Neutral Off
Engaged
On
* Operator lifts off seat.
1
2
3
OF1680
OF1700
2
1
OE0261
1
2
OG0601
