Briggs & Stratton Twin Cylinder L-Head, Руководство по ремонту

Страница: 38 / 171

3
5
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
.
(0.10
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.
Fig. 6 – Remote Fuel Pump Carburetor
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.
Fig. 7 – Current Style Intake Manifold
CURRENT
(TWIN II) MANIFOLD
(TYPE NOS. 1100 & ABOVE)
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.
Fig. 8 – Early Style Intake Manifold
PRE-TWIN II MANIFOLD
(TYPE NOS. UNDER 1100)
ALUMINUM MANIFOLD
GOVERNOR CONTROL BRACKET
MOUNTING BOSSES
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.
Fig. 9 – Remove Intake Manifold & Carburetor
THROTTLE
LINK