N14 Base Engine Troubleshooting and Repair Manual – 005-038   Fuel Pump VS Throttle Shaft Housing

Mark the angle of the VS throttle lever on the VS throttle shaft. Remove the VS throttle lever.

NOTE: Make sure the components in the spring pack guide do

not
fall out when the cover is removed.

Remove the VS spring pack housing cover.

Loosen the set screw in the VS throttle stop.

Remove the VS throttle shaft from the cover. Discard the o-rings.

Remove the shaft dust seals from the cover and discard.

If fuel is leaking between the bushings and the cover, replace the bushings.

• Press the bushings from the cover

• Install the new bushings into the cover

Examine the o-ring for excessive wear.

If the o-ring wear is due to inadequate surface finish in the throttle shaft o-ring groove, replace the throttle shaft.

NOTE: Before installing the new shaft, mark the end of the new shaft in the same location as the mark on the old shaft to allow correct alignment of the VS throttle lever.

Install new dust seals into the cover.

Install an o-ring on the shaft near the lever end.

Apply clean vegetable oil to the o-ring before installation.

Place the throttle stop into the cover.

NOTE: The longest lever on the stop goes toward the rear adjustment screw.

Install the shaft into the cover and through the stop.

Push the shaft out of the other side of the cover.

Install the other shaft o-ring and apply clean vegetable oil to the o-ring before installation.

Push the shaft back into the cover.

Align the setscrew hole in the stop with the hole in the shaft.

Install the setscrew into the stop and tighten.

Assemble the cover to the fuel pump with a new gasket.

Align the lever with the mark on the throttle shaft to install the lever.

Tighten the lever retaining nut to secure the lever to the shaft.

Check the throttle linkage for binding.