25
CARBURETOR
13. Install the air vane and throttle shaft into the
carburetor body by very carefully pushin
the shaft
throu
h the collar into the carburetor body. (See
Fi
ure 37.)
14. Push the throttle plate into the throttle shaft. (The
plate only inserts one way.) If the throttle plate
does not fit snu
ly, replace the throttle shaft. The
overnor sprin
can now be attached to the throttle
shaft.
Note: Be sure air vane operates smoothly and
does not stick or bind.
Installation
1. DuraForce - Assemble the carburetor,
askets,
heat shield, and air filter box. Use the two
mountin
screws to hold the parts to
ether durin
assembly.
R tek - Assemble the carburetor, spit cup, heat
shield, and
askets. Use the mountin
screws to
hold parts to
ether durin
assembly.
2. DuraForce en
ines - Guide the air vane throu
h
the openin
in the shroud base from the bottom of
the base, and attach the carburetor to the en
ine
with two mountin
screws. Ti
hten them to
specifications.
3. DuraForce en
ines - Insert the bent wire of the
throttle cable into the vertical tab of the speed
control lever. Set the throttle to fast and the speed
control lever so that the throttle plate is in the full
open position. The cable is adjusted at the cable
clamp on top of the air filter box.
R tek en
ines - Connect the
overnor sprin
to the
throttle plate and the tab on the block. Connect the
overnor rod adjustin
loop (A) up to the air vane,
and connect the choke cable. Assure the throttle is
in the full open position. (See Fi
ure 38 and Fi
ure
40.)
Fi
ure 38
724-004
4. Install the fuel line and primer tube on the
appropriate carburetor fittin
s.
5. Check that the choke and air vane assembly move
freely and is properly adjusted. If the air vane
requires adjustin
, see Presettin
the Governor on
pa
e 26.
6. Install the air filter element and cover (DuraForce
en
ines only). The R tek en
ine has a spit cup (B)
only. Note: The openin
of the spit cup should be
pointed up. (See Fi
ure 38.)
Governor Theory
Reed Valve Engine
(DuraForce Engines Only)
The shaft of the
overnor air vane is attached to the
throttle disc of the carburetor so that air flow, created
by the rotatin
flywheel, attempts to close the throttle.
The
overnor sprin
resists this force and attempts to
open the throttle. The balance between these two
forces is the
overned en
ine speed. Sprin
tension
may be chan
ed via an adjustable collar which
produces a 50 - 75 RPM chan
e in en
ine speed for
each adjustment “click” it is moved. (See Fi
ure 39.)
A
B
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