Walker MT, MTL, MTEFI, MTLEFI, Подробные инструкции, Страница: 200 / 256

Page: 4-66
WALKER MANUFACTURING COMPANY
July 2006
SERVICE INSTRUCTIONS
Initial Governor Adjustment - Model MTLEFI
The initial governor adjustment is especially critical on
EFI engines because of the accuracy and sensitivity of
the electronic control system. Incorrect adjustment can
result in overspeed, loss of power, lack of response, or
inadequate load compensation. If you encounter any of
these symptoms and suspect them to be related to the
governor setting, the following should be used to check
and/or adjust the governor and throttle linkage.
If the governor/throttle components are all intact, but
you think there may be a problem with the adjustment,
follow Procedure A to check the setting. If the governor
lever was loosened or removed, go immediately to Pro-
cedure B to perform the initial adjustment.
A. Checking the Initial Adjustment
1. Unsnap the plastic linkage bushing attaching the
throttle linkage to the governor lever. Refer to
Throttle Linkage/Governor Lever Connection
photo. Unhook the damper spring from the lever,
separate the linkage from the bushing, and remove
the bushing from the lever. Mark the hole position
and unhook the governor spring from the governor
lever.
Throttle Linkage/Governor Lever Connection
2. Pivot the throttle shaft and plate into the “Full Throt-
tle” position, so the tang of the throttle shaft plate is
against the manifold casting. Refer
Clamping
Throttle Against Stop photo. Temporarily clamp
in this position.
Clamping Throttle Against Stop
3. Rotate the governor lever and shaft counterclock-
wise until it stops. Use only enough pressure to
hold it in that position.
4. Check how the end of the throttle linkage aligns
with the bushing hole in the governor lever. Refer
to
Throttle Link in Center of Hole photo. It should
fall in the center of the hole. If it doesn’t, perform
the adjustment procedure as follows.
Throttle Link in Center of Hole
B. Setting The Initial Adjustment
1. Check the split where the clamping screw goes
through the governor lever. Refer to
Checking
“Split” of Clamp photo. There should be a gap of
at least 1/32". If the tips are touching and there is
no gap present, the lever should be replaced. If not
already installed, position the governor lever on the
cross shaft, but leave the clamping screw loose.
Throttle
Linkage
Linkage
Bushing
Damper
Spring