A recent Service Bulletin (SB-942), has brought requests from the field, regarding the availability of a spanner wrench suitable for holding the V4S magneto, and V4A distributor pulley.
The Service Bulletin mentioned above, has to do with the necessity of installing a new steel washer part #309927, between the V4A distributor drive pulley and the (306994) lockwasher. On both the V4A distributor pulley, and the V4S magneto pulley, the nut torque requirement is from 19 to 21 foot pounds. Application of less than the specified torque will allow the pulley to become loose, resulting in keyway wear from acceleration and deceleration. The overall result, as outlined in Service Bulletin #942, will be a lag in ignition timing, causing poor engine performance.
The spanner wrench being used in figures #1 and #2 is a Proto Tool #C-483, and is readily available from most automotive supply houses. This particular tool is Proto's three inch adjustable spanner with 1/4" dia. lugs.
If this specific tool is not available in your area, one of similar dimensions no doubt can be secured. DO NOT ORDER THIS TOOL FROM JOHNSON MOTORS.
Jack PenlandService Promotion Dept.