Section 3
OPERATION
3-19
785 Motor Grader
1. Fasten seat belt.
2. Turn MASTER Switch to the ON position.
3. Set Park Brake (2, Figure 3-6) to ON position.
4. Set Transmission Shifter (1) to Neutral position.
5. Set Throttle (3) to Idle position.
WARNING: Do not move the throttle lever from
the idle position while cranking the
engine. This can result in engine
over-speed and severe damage to
the engine.
CAUTION: To prevent damage to the starting
motor, do not engage the starting
motor for more than 30 seconds.
Wait two minutes between each
attempt to start.
6. Turn Key ON and wait for all lights to turn off on
the Start Gauge.
7. Turn the Ignition switch to the Start position. If
the engine does not start after three attempts,
check the fuel supply system.
NOTE: The engine must have adequate oil
pressure within 15 seconds after
starting. If there is no oil pressure
indicated on the gauge within 15
seconds, shut off the engine
immediately to avoid engine damage.
8. Idle the engine for 3 to 5 minutes before
operating with a load.
9. After starting a cold engine, increase the
engine speed (rpm) slowly to provide adequate
lubrication to the bearings and to allow the oil
pressure to stabilize.
CAUTION: Do not operate engine at low idle
for long periods with engine
coolant temperature below the
minimum specification. This can
result in the following:
• Fuel dilution of the lubricating oil.
• Cylinder head valve sticking.
• Reduced performance.
Using Booster Batteries
CAUTION: Explosive gases are produced
while batteries are in use or being
charged. Keep flames or sparks
away from battery area. Booster
batteries must be connected
properly to prevent dangerous
sparking.
The grader electrical system is 12 volt negative
ground and uses two batteries in parallel. When
connecting a booster battery be sure the negative
terminal of the booster battery is connected to the
negative terminal of the grader battery and positive
terminal of the booster battery is connected to the
positive terminal of the grader battery
Engine Shutdown
NOTE: Before leaving the operator's seat
perform the following shut-down
procedure.
1. Place throttle in idle position.
2. Place Transmission Shifter in Neutral position.
3. Set Park brake.
4. Lower all tools (blades).
5. Place all light switches to the off position.
6. Turn Ignition switch to the off position.
7. Turn the Master switch to the off position.
Auto Mode
Moving Forward/Reverse.
1. Start engine as described in START-UP
PROCEDURE.
2. Hold foot on brake.
3. Check that area is clear.
4. Lift tools (blades).
NOTE: Make sure blade is not near a tire.
5. Set MANUAL/AUTO switch to the AUTO position.
6. Set throttle to the idle position.
NOTE: If throttle is not at full Idle, controller
will not engage transmission.
7. Set Transmission Shifter to the desired gear.
8. Release foot brake.
9. Wait until transmission engages.
10. Increase the engine RPM with the throttle.
NOTE: As the engine RPM's increase the
transmission will begin to shift until it
reaches the selected gear.
Stopping
1. Apply foot brake.
2. Move throttle back to the idle position.
3. Set Transmission Shifter to Neutral position.
Courtesy of Machine.Market
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