REVISION TO ISC SPECIFICATION ADJUSTMENT PROCEDURE

THE FOLLOWING PROCEDURE FOR ADJUSTING THE IDLE SPEED CONTROL IS IN ADDITION TO INFORMATION IN THE SHOP MANUAL. IDLE SPEED CONTROL (ISC): 1.PRIOR TO ADJUSTMENT OF THE ISC, CHECK FOR AN IDENTIFICATION LETTER APPEARING ON THE ISC ADJUSTMENT SCREW PLUNGER, FIGURE 6. IF LETTER APPEARS, PROCEED TO STEP 3. 2.IF NO LETTER APPEARS, USING TOOL J-29607, BT-8022 OR EQUIVALENT, REMOVE PLUNGER FROM ISC UNIT. THEN, MEASURE LENGTH OF PLUNGER FROM BACK SIDE OF PLUNGER HEAD TO END OF PLUNGER SCREW, DIMENSION "A" FIGURE 6. RECORD THIS MEASUREMENT FOR USE AT STEP 4, BELOW. REINSTALL PLUNGER SCREW IN ISC UNIT, TURNING PLUNGER IN TO A PRESET POSITION SO THAT THE DISTANCE MEASURED FROM THE BACK SIDE OF THE PLUNGER HEAD TO THE ISC NOSEPIECE IS LESS THAN DIMENSION "B", FIGURE 6. 3.PROCEED WITH ISC ADJUSTMENT AS OUTLINED IN THE APPROPRIATE PAGES OF THE 1981 OR 1982 SHOP MANUALS. 4.AFTER FINAL ADJUSTMENT OF THE ISC PLUNGER, MEASURE DISTANCE FROM BACK SIDE OF PLUNGER HEAD TO ISC NOSEPIECE, DIMENSION "B", FIGURE 6. DIMENSION MUST NOT EXCEED THAT SHOWN BY PLUNGER TYPE AS EITHER IDENTIFIED BY PLUNGER LENGTH OR LETTER IDENTIFICATION.

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