Lincoln Electric RANGER 225 GXT Service Manual page 58

F-18
TEST PROCEDURE
1. With the 5/16" nut driver, remove the 6 sheet
metal screws from the case top.
2. Remove the rubber gasket (cover seal) from the
lift bail.
3. Remove the fuel cap. The rubber gasket for the
fill tube will come off with the case top.
4. Remove the case top, then replace the fuel
cap.
5. With the 5/16" nut driver, remove the 5 screws
holding the right case side.
6. Remove the right case side by lifting up and
out.
7. Conduct the test with the gasoline engine OFF.
8. Remove the spark plug wires to prevent acci-
dental engine kickback or starting.
TROUBLESHOOTING AND REPAIR
ROTOR RESISTANCE TEST (continued)
FIGURE F.2 – LEAD LOCATIONS
L e a d 2 0 0 A L e a d 2 1 9
- +
-
Lead 219
RANGER® 225 GXT
+
Lead 200A
9. Isolate the rotor electrically by removing the
generator brush leads. Refer to Figure F.2 as
you perform the remaining steps.
10. Remove lead 219 from the negative brush.
11. Remove lead 200A from the positive brush.
12. Measure the resistance across the rotor slip
rings.
A. Set the ohmmeter on the low scale (X1).
B. Place one meter probe on one of the rotor
slip rings. Place the other probe on the
other slip ring.
C. Check the resistance across the slip rings.
It should read 5 ohms.
F-18