Carburetor Styles - Briggs & Stratton Twin Cylinder L-Head Repair Manual

PLATE
DIAPHRAGM
GASKET
PUMP
BODY
SEE SECTION 1 FOR AIR CLEANER MAINTENANCE PROCEDURES.

CARBURETOR STYLES

Briggs & Stratton Opposed Twin Cylinder engine models use three styles of two piece Flo-Jet down draft carburetors.
All three styles incorporate an independent high speed fuel circuit and a separate idle speed fuel circuit.
An integral vacuum pulse type fuel pump allows remote fuel tank installations. The fuel pump will prime at 18" (46.0 cm)
maximum lift. Fuel pump pressure is rated at 1.5 psi. (0.10 Bar).
Figures 3 – 6 show the major external differences between the three style carburetors.
3
UPPER BODY
FLOAT NEEDLE
DIAPHRAGM
SPRING
CUP DIAPHRAGM
SPRING
BOSS
VALVE
SPRING SPRING
BOSS
IDLE SPEED
SCREW
IDLE
MIXTURE
VALVE
0R PILOT
JET
Fig. 2
CHOKE PLATE
FLOAT
PIN
THROTTLE
PLATE
CHOKE SHAFT
GASKET
FLOAT
LOWER BODY
FIXED
JET
"O" RING
PLUG
OR
SOLENOID
THROTTLE
SHAFT
3