10
Through external linkage, the action of the crossshaft is transmitted to the throttle (or butterfly) valve in the
carburetor. When the engine, is at rest, the tension of the governor spring should hold the throttle valve in
open position.
When a normal load is applied and engine (and governor) speed tends to decrease, the resulting rotation
of the cross shaft acts against the governor spring to open the throttle valve wider which, in turn, admits more
fuel and restores engine speed. With governor properly adjusted, this action takes place so rapidly that a
reduction in speed is hardly noticed. As speed again reaches governed setting, the shaft rotates to either open
or close the throttle valve to maintain speed at a relatively constant level.
ADJUSTMENT:
Governors are adjusted at the factory and further adjustment should not be necessary unless
governor arm or linkage works loose and becomes disconnected. Governor readjustment may be indicated if
engine speed surges or hunts with changing load or if speed drops considerably when normal load is applied.
Figure 5 Initial Adjustment
K241, K301
SPEED ADJUSTMENT - K241, K301
After making initial adjustment and hooking up throttle wire on variable speed applications, start engine
and check operating speed with hand tachometer. Maximum allowable speed for K241 and K301 models is
3600 RPM. Do not exceed this speed.
Loosen capscrew and move high speed stop bracket until correct speed is attained then retighten
capscrew. (See Figure 6).
Initial Adjustment:
The following procedure
can be used on all models for the initial setting.
Make this setting with engine stopped.
STEP 1: Loosen (do not remove) nut which holds
governor arm to the governor cross shaft.
STEP 2: Grasp end of cross shaft with pliers and
turn in counterclockwise direction as far as
possible (tab on cross shaft will stop against rod on
governor gear assembly).
STEP 3: Pull governor arm all the way from
carburetor then retighten nut holding governor arm
to shaft. With updraft type carburetor, lift arm as
far as it will go then retighten arm nut.
