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F-17

 

 

 

 

F-17

Observe Safety GuidelinesTROUBLESHOOTING & REPAIR

 

detailed in the beginning of this manual.

TROUBLESHOOTING GUIDE

PROBLEMS

POSSIBLE AREAS OF

 

RECOMMENDED

 

(SYMPTOMS)

MISADJUSTMENT(S)

 

COURSE OF ACTION

 

 

ENGINE AND IDLE PROBLEMS

 

 

The engine will not develop full

1.

The fuel may be old or contami-

 

1. The engine may be in need of

power.

 

nated. Supply the engine with

 

adjustment or repair.

 

 

 

fresh, clean fuel.

 

 

 

 

2. The fuel filter may be clogged;

 

 

 

 

 

replace the filter if necessary.

 

 

 

 

3. The air filter may be clogged;

 

 

 

 

 

replace if necessary.

 

 

 

The engine will not idle down to low

1.

Make sure the idle switch is in

 

1. Perform the Idle Solenoid

RPM. The machine has normal

2.

the “AUTO IDLE” position.

 

Test.

 

weld output and auxiliary power.

Make sure there is no external

 

2. Check for damaged wiring or

 

 

load on the weld terminals or

 

faulty connections at idle sole-

 

 

the auxiliary power receptacles.

 

noid, the pull coil PC board, the

 

3. Check for mechanical restric-

 

run/stop switch, and the start

 

 

tions in the idler solenoid link-

 

button.

 

 

 

age.

 

3. Check for loose or damaged

 

 

 

 

wiring or faulty connections at

 

 

 

 

leads #404 and #215. (Control

 

 

 

 

PC Board P2-4 and P2-5) See

 

 

 

 

Wiring diagram.

 

 

 

 

 

4. Set the idle switch in the

 

 

 

 

“AUTO” position. Set the mode

 

 

 

 

switch to the CC-STICK posi-

 

 

 

 

tion. Make sure that no lead is

 

 

 

 

applied to either weld output or

 

 

 

 

the auxiliary output.

 

 

 

 

 

5. Start the machine and allow it to

 

 

 

 

run for about 30 seconds.

 

 

 

 

 

6. Manually move the idle solenoid

 

 

 

 

plunger to the idle position. If

 

 

 

 

the solenoid engages and holds

 

 

 

 

in the idle position, the pull coil

 

 

 

 

PC board is probably defective;

 

 

 

 

replace it.

 

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed. Call 1-888-935-3877.

RANGER 305D

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Lincoln Electric SVM175-A service manual Engine and Idle Problems