105612-1690 ZEXEL 9 420 617 231 BOSCH AUTOM. ADVANCE MECHANISM 9420617231 1056121690

3306 New Scroll Fuel System (NSFS)
See the service manual for your engine for other adjusting procedures.
Rack Adjustment For Engines With NSFS
Rear Of Governor
1. Opening for variable power actuator.1. Remove the variable power actuator from the rear of the governor.2. Adjust the high power fuel setting using the standard fuel system setting procedure in the service manual.For the correct fuel setting specifications, see the Engine Information Plate or the FUEL SETTING AND RELATED INFORMATION FICHE.
6V7941 Compressor Assembly
Governor And Compressor
2. 6V7941 Compressor Assembly.3. Remove the 6V7941 Compressor Assembly (2) and replace the plug in the rear of the governor housing.
Variable Power Actuator
3. Rod. 4. Washered nut. 5. Jam nut. 6. Dust cover.4. Remove the dust cover (6) from the variable power actuator. Loosen the jam nut (5) on the rod (3). Tighten the washered nut (4) to put rod (3) in the fully retracted position.
Governor And Actuator
3. Rod. 4. Washered nut. 5. Jam nut. 7. Actuator.5. Install actuator (7) in governor housing opening (1).6. Move the governor control to the high idle position and hold or fasten the governor control in this position.7. Extend the actuator rod (3), by loosening the washered nut (4), to achieve a minimum dial indicator reading of 2.0 mm (.08 in.) less than the desired low power fuel setting.EXAMPLE: If the low power rack adjustment specification is 3.0 mm (.12 in.), the actuator rod (3) must be adjusted to obtain a dial indicator reading of 1.0 mm (.04 in.).8. Tighten the washered nut (4), to retract the actuator rod (3) and increase the dial indicator reading to the specified low power fuel setting.For the correct fuel setting specifications, see the Engine Information Plate or the FUEL SETTING AND RELATED INFORMATION FICHE.9. If the low power fuel setting is exceeded, repeat steps 7 and 8.10. Tighten the jam nut (5) on the actuator rod (3) and install the dust cover (6).3304 SMFS Air Only Actuator
See the service manual for your engine for other testing and adjusting procedures.
Rack Adjustment For Engines With Sleeve Metering Fuel System (SMFS)
1. Remove the variable power actuator (1) from the rear of the governor (2).2. Use the fuel setting procedure in the service manual and adjust the high power fuel setting screw.For the correct fuel setting specifications, see the Engine Information Plate or the FUEL SETTING AND RELATED INFORMATION FICHE.3. Install the variable power actuator (1).4. Remove the back cover (6) from the actuator (1) to expose the adjustment pin (5).5. Move the governor control shaft to the high idle position.6. Turn the adjustment pin (5) clockwise to adjust the variable power control rod (8) to the fully EXTENDED position.7. To adjust the low power setting, turn the adjustment pin (5) counterclockwise to retract rod (8). Retract the rod (8) until the rack setting is decreased to the specified setting.For the correct fuel setting specifications, see the Engine Information Plate or the FUEL SETTING AND RELATED INFORMATION FICHE.8. Replace cover (6) on the variable power actuator (6).
Governor And Variable Power Actuator
1. Variable