Briggs & Stratton 115400, Manual

Page: 126 / 281

125
5
12. Place new float bowl gasket ( A ) in
carburetor body groove, Fig. 119.
13. Place float bowl ( B ) on carburetor with
drain boss parallel ( C ) to fu el inlet fitting
([ D ] Fig. 122).
14. Install new float bowl washer ( E ). Torque
bowl screw ([ F ] Fig. 122) to values listed.
Fig. 122
Identifying Main And Pilot Jets
(138400)
CARBURETOR SERVICE
PROCEDURES
(235400, 245400, 28Q700)
Carburetor Service - Walbro LMT
(235400, 245400, 28Q700)
CAUT ION: Do not use wires, drills or other
devices to clean out mete ring holes or passages.
NOTE
: Use compressed air at a moderate
pressure setting (5-7 PSI). Blow in both
directions to clean out all openings and
passages.
These carburetors have a fixed high speed main
jet with a screw for idle mixture adjustment (
B )
and a screw for idle speed adjustment ([ A ] Fig.
123). The different carburetors are identified as
LMT1 and up.
The letters LMT are cast into the body of the
carburetor while the identification numbers (
C )
are stamped into carburetor mounting flange
next to idle mixture screw or above the fuel inlet
([
D ] Fig. 123).
Fig. 123
Disasse mbly
1. Remove float bowl screw and washer.
2. Remove float bowl and float bowl gasket
from carburetor.
3. Remove float hinge pin, float and inlet
needle.
4. Remove idle mixture needle limiter cap.
5. Remove the idle mixture screw with sprin g
and the idle speed screw with spring.
6. Rotate throttle shaft ( A ) and lever closed.
7. Remove throttle plate screws ([ B ] Fig.
124).
Model
Seri es Standard
Main Je t High
Altitude
Main Jet
Standard
Pilot
Jet
High
Altitude
Pilot Je t
138400 79 76 44 43