Section 6. Governors - Tecumseh HH100 Handbook

This Governor Assembly is used on current production
HH & OH Tecumseh Engines.
SHAFT PRESSED TO GEAR
WASHERS
To position the governor gear assembly, insert the
shaft opposite the flyweights into the cylinder block.
SPOOL
GOVERNOR
GEAR
Position the governor gear assembly (with washer
under governor gear) to mesh with the camshaft gear.
Place the governor spool (with washer under the
spool) on the governor gear assembly, with the fingers
of the flyweights under the rim of the spool.
GOVERNOR SPOOL
GOVERNOR SHAFT
GOVERNOR GEAR
16

SECTION 6. GOVERNORS

GOVERNOR GEAR
FLYWEIGHT
ASSEMBLY
WASHER
GROOVED SLOT
(INTERNAL)
FLYWEIGHT
There is an oil groove on the inside of the spool to
prevent oil pressure from building up under the spool.
Position the governor gear and flyweight assembly
on the governor gear shaft. Secure with a retaining
ring. Place the governor spool on the governor gear
shaft.
The spool is positioned on the governor gear shaft
with the fingers of the flyweight under the rim of the
spool.
Some models have an oil hole in the closed end for
lubrication. CAUTION: On reassembly make sure
hole is open. Other models have a groove on the
inside that serves the same purpose.
RETAINING RING GROOVE
OIL HOLE
(ON SOME MODELS)
GOVERNOR
GEAR SHAFT
GOVERNOR GEAR AND
FLYWEIGHT ASSEMBLY
Remove the governor gear shaft by threading the
shaft with 1/4-28 die. Place a number of washers
on the shaft and turn on a nut. By tightening the nut
against the washers the shaft will be pulled from
the cylinder.
For old style governor assembly, position the governor
gear shaft over the opening in the cylinder block
and tap lightly with a hammer to start. Use a press
to position. Refer to top picture for proper pressed
in depth. Measure from the top of the governor gear
shaft to the machined surface on the cylinder block.
PRESS GOVERNOR
"GEAR SHAFT'
INTO THIS DIMENSION*
1" (25.4 mm)
*1.031" (26.187 mm)
ON MODELS WITH WASHER
WASHER ON
SOME MODELS
RETAINING RING