Engine Operation; Gasoline Engine Controls - Lincoln Electric RANGER 9 SVM 110-A Service Manual

B-7
1. ENGINE CHOKE CONTROL
2. IDLER CONTROL SWITCH
3. START/STOP SWITCH
4. ENGINE HOUR METER
5. BATTERY CHARGING SYSTEM METER

GASOLINE ENGINE CONTROLS

See Figure B.2 for the location of the following fea-
tures:
1. ENGINE CHOKE CONTROL: Provides
a richer air/fuel mixture for cold engine
starting conditions.
ENGINE OPERATION, below, for details
on setting the choke.
2. IDLER CONTROL SWITCH: Adjusts
the running speed of the engine. The
switch has two positions, HIGH and
AUTO. In HIGH, the engine runs con-
tinuously at high idle. In AUTO, the
idler control works as follows:
Stick Welding, "WELDING TERMINALS ALWAYS
ON" mode: The engine accelerates to high speed
when the electrode touches the work and strikes a
welding arc. The engine returns to low idle ap-
proximately 10-14 seconds after welding stops, as
long as no auxiliary power is being drawn.
Wire Welding, "WELDING TERMINALS ALWAYS
ON" mode: The engine accelerates to high speed
when the wire feeder gun trigger or amptrol is
closed. The engine returns to low idle approxi-
mately 10-14 seconds after the gun trigger is
released and the welding stops, provided that no
auxiliary power is being drawn.
Auxiliary Power: The engine accelerates to high
speed when power is drawn at the receptacles for
lights or tools. The engine returns to low idle
approximately 10-14 seconds after demand for
auxiliary power stops.
RANGER 9
OPERATION
FIGURE B.2 – GASOLINE ENGINE CONTROLS
RANGE
16 to 25
WARNING
See the topic
6
5
7
4
8
3
2
DC+
9
90
125
1 AC
70
175
10 max
50
225 AC
210 DC
LINCOLN
RANGER 9
ELECTRIC
CHOKE
AUTO
IDLER
HIGH
2
3. START/STOP SWITCH: Has three positions,
START, RUN, and STOP. When the switch is held
in the START position, the starter motor cranks
over the engine – release the switch once the
engine starts. The STOP position stops the
engine.
NOTE: If you place the switch in the START posi-
tion when the engine is running, you may damage
the ring gear or starter motor.
4. ENGINE HOUR METER: Records engine running
time. Use the meter to determine when to perform
required maintenance.
5. BATTERY CHARGING SYSTEM METER: Shows
whether the charging circuit is performing its job of
charging the battery when the engine is running.
The meter will register discharge during starting,
but then the needle should return to a position
slightly toward positive during running. The needle
will hold position when the engine stops.

ENGINE OPERATION

WARNING
DO NOT RUN THE ENGINE AT EXCESSIVE SPEEDS.
The maximum allowable high idle speed for the
RANGER 9 is 3750 RPM, no load. Do NOT adjust the
governor screw on the engine. Severe personal injury
and damage to the machine can result if it is operated
at speeds above the maximum rated speed.
Read and understand all safety instructions included in
the Onan instruction manual that is shipped with your
RANGER 9.
DC-
1
5
4
START
RUN
STOP
3
RANGER 9
B-7