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F-55

F-55

TROUBLESHOOTING & REPAIR

CONTROL BOARD REMOVAL AND REPLACEMENT

(continued)

FIGURE F.13 - CONTROL BOARD LOCATION

J1

#5C

#222

#213

CONTROL

BOARD

COVER

CONTROL

J2

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PROCEDURE

Before starting the following procedure, refer to the topic “PC Board Troubleshooting Procedures” at the beginning of this section.

1.Perform this procedure with the engine OFF.

2.With the 5/16” and 3/8” nut drivers, remove the sheet metal screws from the top and right case side.

3.If necessary, use the 1/2” wrench to remove the exhaust pipe from the muffler.

4.Carefully remove the right case side.

5.Remove the rubber gasket (cover seal) from the lift bail.

6.Remove the fuel cap and the rubber gasket from the fill tube.

7.Unlatch the double door assembly and use the slot head screwdriver and 3/8” wrench to remove the door support rod from the door assembly.

8.Remove the case top, then reinstall the fuel cap.

9.With the 5/16” nut driver, remove the control board cover. See Figure F.13.

RANGER 10-LX

10.Remove the two molex plugs from the control board. Also remove the three indi- vidual leads #213, #222 and #5C. (Note lead placement.)

11.Detach the two in-line connectors from the current sensing leads (#254 and #254A). See the Wiring Diagram. These leads attach to the current sensor located on the control board.

12.Remove lead #3 from the 115VAC recepta- cle. Thread the lead through the hole in the current sensor in order to separate it from the control board. It will probably be necessary to cut any cable ties restraining the wiring. Use the diagonal cutters.

13.With the 1/4” nut driver, remove the screws holding the control board.

14.Replace the old control board with a new one.

15.Thread lead #3 back through the current sensor on the control board and reattach the lead to the 115VAC receptacle.

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Image 109
Lincoln Electric SVM120-A service manual Figure F.13 Control Board Location