OPERATION
B-4 B-4
RANGER 305D
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ENGINE CONTROLS (Figure B.1)
1. RUN.STOP SWITCH:RUN position energizes
the engine prior to starting. STOP position stops
the engine.
2. GLOW PLUG PUSH BUTTON: When
pressed, this button activates the engine glow
plugs to preheat the engine for starting. This but-
ton also temporarily powers the fuel solenoid hold
coil. On codes 10926 and 11121,the electric fuel
pump is also temporarily activated.
3. START PUSH BUTTON: Energizes the
starter to crank the engine and activates the fuel
solenoid pull coil.
A) In the HIGH position, the engine runs at the high idle
speed controlled by the engine governor.
B) In theAUTO position, the idler operates as follows:
a. When switched from HIGH toAUTO or after starting the
engine, the engine will operate at high speed for approx-
imately 12 seconds and then go to low idle speed.
b. When the electrode touches the work or power is drawn
from the auxiliary power receptacles (approximately 100
watts minimum, the engine accelerates and operates at
high speed.
c. When welding ceases or theAC power load is turned off,
a fixed time delay of approximately 12 seconds starts. If
the welding or AC power load is not restarted before the
end of the time delay,the idler reduces the engine RPM to
low idle speed.
d. The engine will automatically return to high idle speed
when the welding load orAC power load is reapplied.
4.ENGINE ALTERNATORTROUBLE LIGHT:
The yellow engine alternator light is off when the
battery charging system is functioning normally. If
the light turns on, the alternator or the voltage reg-
ulator may not be operating correctly.The light may
also come on if the battery is not holding a charge.
It is normal for the light to come on while starting
the engine. (Code 10926 and over)
5. ELECTRIC FUEL GAUGE: (Codes 11121
and higher) gives accurate and reliable indication
as to how much fuel is in the fuel tank.
6. ENGINE HOUR METER: Displays the total
time that the engine has been running. This meter
is useful for scheduling prescribed maintenance.
7. ENGINEPROTECTION LIGHT:A warning indicator
light for low oil pressure and/or coolant over temperature.
The light is off when the systems are functioning properly.
The light turns on then the RUN/STOPswitch is in the “ON”
position before starting the engine. If the Engine Protection
or Battery Charging lights do NOTturn off shortly after start-
ing the engine, stop the engine immediately and determine
the cause.
8. IDLER SWITCH: Has two positions as follows:
1) In the HIGH position, the engine runs at the high idle
speed controlled by the engine governor.
2) In theAUTO position, the idler operates as follows:
• When switched from HIGH toAUTO or after starting
the engine, the engine will operate at full speed for
approximately 12 seconds and then go to low idle
speed.
FIGURE B.1
6
5
1
9
10
11
4
7
3
2
16
15
14
13
12
8
NOTE:Layoutand appearance
varybetween models.