Tecumseh HH100 Handbook page 19

GOVERNOR ROD
RETAINING RING
The governor rod is retained in the cylinder cover
bushing with a retaining ring.
The governor spool moves the governor rod by
contacting the lever. Outward movement of the governor
spool moves the governor levers and carburetor throttle
to a closed position.
The lever must contact the governor spool tightly
for best governor control and for correct adjustment
procedure.
BEARING WITH
SEAL TO OUTSIDE
BEARINGS
RETAINING RING
WASHER
The governor rod on some valve-in-head model engines
utilize needle bearings. If bearing(s) are removed,
always install new bearing(s). Remove with 3/8''
(9.525 mm) diameter punch and mallet. To install,
tap the first bearing in until the bearing end is flush
with casting. Holding a finger over hole will indicate
when bearing is driven into casting far enough. Drive
the outside bearing in with edge flush with outside
surface of casting and seal (in bearing) at outside
end.
GOVERNOR ADJUSTMENT FOR HORIZONTAL
ENGINES (See Picture: Governor Adjustment for
Horizontal Engines)
Move remote controls to RUN position.
Loosen Screw "A".
Pivot plate "B" counterclockwise (ccw) and hold.
Move lever "C" to left.
Tighten screw "A" securely.
When the governor is properly set, the carburetor
throttle lever will be in a wide open position when
the controls are set for starting.
The governor spring is to be anchored in the bottom
center hole (D) of plate "B". Do not stretch or cut
the governor spring. Above adjustments will correct
any variations in governor control.
CYLINDER COVER
GOVERNOR SPOOL
CONTACTS LEVER
BEARING END
FLUSH WITH CASTING
GOVERNOR ADJUSTMENT FOR HORIZONTAL ENGINES
"C"
"A"
"B"
TURN CCW
GOVERNOR
ADJUSTING
SCREWS
1. SETTING VARIABLE SPEED ADJUSTING
SCREW. Before attaching the bowden wire, set
the engine for maximum R.P.M. (See Mfg.
specifications) with engine running. Use a good
tachometer. Move lever "A" clockwise until lower
end strikes the adjusting screw at "1". (See picture
below)
Loosen lock nut on adjusting screw and turn in to
decrease R.P.M. Turn out to increase R.P.M.
CAUTION: DO NOT EXCEED RECOMMENDED R.P.M.
2. ADJUSTING FIXED SPEED. The fixed speed
adjusting screw is the optional position "2". Adjust
it by starting the engine, then loosening the locknut.
Turn screw in to increase R.P.M. and out to decrease
R.P.M.
IDLE
(CW)
ADJUSTING SCREW
FIXED SPEED
POSITION "2"
OPTIONAL
ADJUSTING SCREW VARIABLE
SPEED POSITION "1" STANDARD
PIVOT POINT
GOVERNOR
SPRING
MOVE TO
'RUN' POSITION
BOWDEN WIRE
CLAMP "B"
FAST
HOLE "B"
HOLE "C"
"A" LEVER
PIVOT
(CW)
BOWDEN WIRE
CLAMP "C"
17