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1. Tractor Controls
• Color coding for controls:
– Stop Engine—RED
– Ground Motion—ORANGE
– Power Engagement—YELLOW
– Positioning and Adjusting—BLACK

2. General Rules for Moving Controls
• When using a foot brake, push it in; When
using a hand brake, pull up.
• A foot clutch is disengaged when it is pushed
in and engaged when let up
• Hand operated engine controls (throttles)
increase engine speed when moved upward or
forward. Foot operated throttles increase
speed when pushed forward or downward by
toe pressure

3. RED—Stop Engine
Gasoline Engine—Red letters on key switch
Diesel Engine—Red fuel shut-off switch
*Most diesel engines are shut off with the fuel
shut-off switch, not by the ignition key*

4. ORANGE—Ground Motion
• Ground Motion Controls Include:
– Engine Speed
– Transmission Controls
– Parking Brake or Park-Lock
– Independent Emergency Brakes
– Differential Lock

6. ORANGE—Ground Motion
• Rules for ORANGE:
– Engine speed controls are operated with right hand
and/or right foot
– Transmission gearshift patterns must be clearly and
permanently identified
– Differential lock controls are engaged with a forward or
downward motion
– Brake locks may be a mechanical lock on the drive train
versus a lock on the axle.
http://abe.sdstate.edu/h
osta/index_files/Task%
20Sheets/4.5.2%20Gro
und%20Motion%20Co
ntrols.pdf