Remote Fuel Pump Carburetor; Intake Manifolds; Engine Type Nos. 1100 & Above; Engine Type Nos. Under 1100 - Briggs & Stratton Twin Cylinder L-Head Repair Manual

Remote Fuel Pump Carburetor

Carburetors used for remote fuel pump applications
are manufactured without integral pumps, Fig.6. The
remote fuel pump is supplied by the equipment
manufacturer.
Fuel pump pressure must not exceed 1.5 psi
Bar).
NOTE: Excessive fuel pump pressure may result
in an over rich carburetor mixture and,
ultimately cylinder scoring and, or other
engine damage resulting from crankcase
oil dilution with gasoline.

INTAKE MANIFOLDS

Two different style intake manifolds have been used.
Engine Type Nos. 1100 & Above
The current style is one piece cast aluminum or iron.
Governor controls are mounted on the cylinder.
NOTE: Current (Twin II) manifolds are not inter-
changeable with previous manifolds. Twin
II manifolds have no provision for mounting
governor control brackets.

Engine Type Nos. Under 1100

Two variations of early style manifolds were used; the
first, was aluminum and was replaced by a one piece
cast iron. This style manifold had the governor control
bracket mounted on the manifold.

REMOVE CARBURETOR

Horizontal Crankshaft – Twin II
(Type Nos. 1100 & Above)
Carburetor and intake manifold must be removed as
an assembly, Fig. 9.
1. Remove air cleaner assembly.
2. Remove fuel and vacuum lines from carburetor
fuel pump body.
3. Remove four mounting screws.
a. Lift manifold and disconnect throttle link from
carburetor.
3
.
(0.10
Fig. 6 – Remote Fuel Pump Carburetor
Fig. 7 – Current Style Intake Manifold
Fig. 8 – Early Style Intake Manifold
Fig. 9 – Remove Intake Manifold & Carburetor
CURRENT
(TWIN II) MANIFOLD
(TYPE NOS. 1100 & ABOVE)
PRE-TWIN II MANIFOLD
(TYPE NOS. UNDER 1100)
GOVERNOR CONTROL BRACKET
MOUNTING BOSSES
ALUMINUM MANIFOLD
THROTTLE
LINK
5