Nor arm. see figure f.13. for location of, Troubleshooting & repair – Lincoln Electric WELDANPOWER SVM 113-A User Manual

Page 67

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ENGINE THROTTLE ADJUSTMENT TEST

(continued)

FIGURE F.13 - LOW IDLE ADJUSTMENT NUT ON IDLER SOLENOID

Solenoid

Housing

3/8" Low Idle

Adjustment

Nut

Rod

7. After you set the low idle speed, set the

Idler Switch to HIGH and recheck the high
idle speed. Adjust if necessary.

Frequency Counter Method:

1. Plug the frequency counter into one of the

115 VAC auxiliary receptacles.

2. Start the engine and check the frequency

counter. With the Idler Switch set on HIGH,
the counter should read 60.8 to 62.5 Hz.
With the Idler Switch set on AUTO (and
after the machine has changed speeds,
about 12 seconds) the counter should read
35.8 to 37.5 Hz. If either of these readings
is wrong, adjust as follows:

3. ADJUST HIGH IDLE:

a. If the counter reading is above 62.5

Hz, turn the High Idle Increase Speed
screw counter-clockwise

several

turns. Turn the High Idle Decrease
Speed screw clockwise until the
counter reading is between 60.8 and
62.5 Hz. See Figure F.12.

Next, turn the High Idle Increase
Speed screw clockwise until the
screw contacts the tab on the
Governor Control Lever. Do NOT
tighten the screw any further, as this
may cause the tab to bend. See Figure
F.12.

b. If the counter reading is below 60.8

Hz, turn the High Idle Decrease Speed
screw counter-clockwise

several

turns. Turn the High Idle Increase
Speed screw clockwise until the
engine speed is between 60.8 and
62.5 Hz. See Figure F.12.

Next, turn the High Idle Decrease
Speed screw clockwise until the
screw contacts the tab on the
Governor Control Lever. Do NOT
tighten the screw any further, as this
may cause the tab to bend. See Figure
F.12.

c. After the adjustments are made,

try to move the Governor Control
Lever. There should be no move-
ment. The two high idle speed
screws are designed to work
against opposite sides of the
Governor Control Lever tab so that
no movement (and therefore no
increase in speed) is possible.

TROUBLESHOOTING & REPAIR

F-29

WELDANPOWER 125