Troubleshooting and repair, Engine throttle adjustment test (continued) – Lincoln Electric EAGLE SVM192-A User Manual

Page 65

ENGINE THROTTLE ADJUSTMENT TEST (continued)

11. If either of the readings is incorrect, adjust the

throttle as follows:

Adjust HIGH IDLE: Use the 3/8” wrench to turn

the spring-loaded adjustment nut. See Figure

F.8 for location of the adjustment nut. Turn the

nut clockwise to increase HIGH IDLE speed.

Adjust the speed until the tach reads between

3650 and 3750 RPM.

Adjust LOW IDLE: First make sure there is no

load on the machine.

Set the IDLE switch to

AUTO and wait for the engine to change to low

idle speed.

Use the 3/8” wrench to adjust the

solenoid nut, which changes the amount of

throw in the throttle lever arm. See Figure F.8

for location of the adjustment nut. Adjust the

nut until the tach reads between 2150 and

2250 RPM.

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.

At HIGH IDLE (3700 RPM), the

counter should read 60.8 to 62.5 Hz. At LOW

IDLE (2200 RPM), the counter should read

35.8 to 37.5 Hz. Note that these are median

measurements; hertz readings may vary

slightly above or below.

3. If either of the readings is incorrect, adjust the

throttle as follows:

Adjust HIGH IDLE: Use the 3/8” wrench to turn

the spring-loaded adjustment nut. See Figure

F.7 for location of the adjustment nut. Turn the

nut clockwise to increase HIGH IDLE speed.

Adjust the speed until the frequency reads

between 60.8 and 62.5 Hz.

Adjust LOW IDLE: First make sure there is no

load on the machine. Set the IDLER switch to

AUTO and wait for the engine to change to low

idle speed. Use the 3/8” wrench to adjust the

solenoid nut, which changes the amount of

throw in the throttle lever arm. See Figure F.8

for location of the adjustment nut. Adjust the

nut until the frequency reads between 35.8 and

375.Hz.

TROUBLESHOOTING AND REPAIR

F-29

EAGLE™ 10,000

Throttle

linkage

Choke

Cable

3/8" High Idle
Adjustment Nut

Solenoid

Housing

3/8" Low Idle

Adjustment

Nut

Rod

Muffler

FIGURE F.7

HIGH IDLE ADJUSTMENT NUT

FIGURE F.8

LOW IDLE ADJUSTMENT NUT