Farymann Diesel 15W Repair Manual page 63

TEST RUN, ADJUSTMENTS
A small tension spring assembled to the lever
system ensures that there is always contact
between the tapped bolt and the governor pin.
The fuel pump rack is controlled whenever the
engine is running.
More fuel means higher speed, i.e. the governor
pin is being pushed out further and pressed
against the tapped bolt, resulting in a movement
of the control lever / fuel pump rack towards the
idle position. Less fuel is injected and the speed
drops governor pin moves back and the com-
plete governing loop starts again.
11. Governor setting
Each time the governor has been repaired and /
or the gear cover or speed control assy removed
and reassembled, the governor must be reset.
Procedure :
Remove the governor cover plate on the gear
housing. Crank the engine until the slot between
the governor flyweights is in vertical position.
Move the acceleration lever to full speed posi-
tion. Bend up the lock plate and unscrew the
castle nut by holding the tapped bolt with a
screwdriver.
Screw out tapped bolt till tapped rests on control
lever. Insert a middle sized screwdriver inside
the flyweight slot. Impress the flyweights to
maximum opening !
Now screw in the tapped bolt until it just come in
contact with the governor pin => No play to be
felt when pushing onto the control lever with
your fingers. Release the flyweights and screw
in the tapped bolt ½ a turn further.
Maintain the tapped bolt in this position and
tighten the castle nut, bend the lock plate and
reassemble the cover plate.
The correct setting of the clearance between
tapped bolt and governor pin is essential for the
proper function of the engine. If the clearance is
too wide the engine can overspeed, is it too
small the engine will not reach ist full speed /
output.
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