Series 6 Carburetors 4-Cycle; Series 10 (Emission) - Tecumseh ECV100-120 - TECHNICIAN S Handbook

SERIES 6 CARBURETORS 4-CYCLE

Series 6 carburetors are used on 2 and 4-cycle engines.
They have a larger venturi than the dual system carburetor
and use a simple fixed idle system. Series 6 carburetors
used on both vertical and horizontal applications are
nonadjustable. The 4 cycle version pictured has a stepped
primer bulb. (diag. 17).
SERIES 8
The Series 8 carburetor has both a fixed main and idle
circuit. The fixed idle system uses a restricted jet that
meters the fuel. The idle restrictor jet will be capped to
prevent access unless removed. The fixed main jet is part
of the bowl nut. A ball plug is visible from the bottom,
which seals the metering passage. This carburetor also
has a serviceable main nozzle emulsion tube. It also has
a stepped primer bulb to assist in starting. (diag. 18)
SERIES 9
The Series 9 carburetor uses the same body as the Series
8 but has a simple fixed idle system, identical to the one
used on the Series 6 carburetor. It has the idle discharge
port located at the 7 o'clock position on the throttle end of
the carburetor. Identify this carburetor by the stepped primer
bulb, the presence of a non-drilled idle mixing well and a
serviceable main nozzle emulsion tube. (diag. 19)

SERIES 10 (EMISSION)

The Series 10 carburetor is identical to the Series 8
carburetor with the addition of a choke to assist in cold
weather starts. It also has a fixed idle and main. The idle
restrictor jet will be capped to prevent access unless the
cap is removed. The fixed main jet is part of the bowl nut.
A ball plug is visible from the bottom, which seals the
metering passage. This carburetor also has a serviceable
main nozzle emulsion tube and a stepped primer bulb to
assist in starting. (diag. 20)
NON-TECUMSEH CARBURETORS
DELLORTO CARBURETOR
The Dellorto carburetor is similar to the dual system
carburetor. It has no adjustments and has a primer assist
start. It has a noncorrosive float and the needle is viton
tipped, eliminating the viton seat found in the dual system
carburetor. The angle of the fuel inlet is adjustable and
attached to the carburetor body with a banjo bolt. This
carburetor is used on some TVS rotary lawnmower engines.
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