Tecumseh HH100 Handbook page 14

When assembling the float to the carburetor body,
position the needle spring on the adjusting tag so
that it hangs down. Hold the float spring under tension
until the carburetor body will support the slight spring
tension.
NOTE: THE SPRING ENDS MUST POINT TOWARD
THE CARBURETOR CHOKE END.
Position the choke shaft and shutter in the closed
position prior to tightening the screws. Hard starting
may be due to insufficient choking action because
of a misaligned choke plate. Correct by readjusting
choke plate to close completely.
A typical choke shutter found on horizontal engines
is shown in the figure below. The full choke position
of choke lever is counterclockwise when viewed from
top of the carburetor. Note cut-out position of choke
shutter.
INSTALL WITH
NUMBERS OUT
62
29
Figure below shows a typical choke shutter found
on vertical engines. The full choke position of the
choke lever is clockwise when viewing from the top
of the carburetor. Note cut-out position of choke shutter.
CHOKE
SHUTTER
12
Prior to removing the fuel bowl nut, remove the high
speed adjustment needle. Use a 7/16'' box end wrench
or socket to remove the fuel bowl nut. When replacing
the fuel bowl nut be sure to position the fiber gasket
under the nut and tighten securely.
Examine the tip of the high speed needle, if it appears
as illustrated, replace. If the tip of the high speed
adjustment needle is damaged, the seat is probably
damaged. The seat is part of the main nozzle. When
replacing the high speed needle the main nozzle
should also be replaced.
HOLD SLIGHT
SPRING TENSION
WITH THUMB
Use new gaskets when rebuilding the carburetor. If
the fuel bowl to carburetor body gasket does not
seat, enlarge by stretching with 4 or 5 quick short
strokes. Fiber gasket must be used between center
CCW
of fuel bowl and carburetor body.
The fuel pick up passage must be clean to assure
adequate fuel flow from the fuel bowl to the metering
CHOKE SHUTTER
systems.
AIR CLEANER
MOUNTING
CW
AIR CLEANER
MOUNTING
NUMBERS
OPPOSITE SIDE
HIGH SPEED
ADJUSTMENT NEEDLE
"A"
"O" RING
"B" DAMAGED
(Replace)
FUEL BOWL NUT
OUTSIDE GASKET
INSIDE FIBER
GASKET
FUEL
PICK-UP
PASSAGE
TENSION SPRING
FUEL BOWL
FUEL BOWL DRAIN
FUEL BOWL
GASKET AND SEAT
MAIN
NOZZLE
FLOAT