Specifications

99
5
CARBURETOR SERVICE
PROCEDURES
(050000, 085400, 086400, 115400,
117400, 118400, 104700, 161400,
185400, 260700, 261700)
Some engines were built using both Nikki and
Walbro carburetors. These carburetors have a
fixed high speed main jet with adjustment screws
for idle mixture and idle speed only. Be certain to
use both the manufacturer and the carburetor
number when ordering service parts. Service
parts are available for both carburetors.
Engines used in snow removal equipment use
Nikki carburetors with an adjustment screw for
idle speed only. This carburetor also has a
primer bulb port.
Carburetor Service - Mikuni
(050000, 085400, 086400, 115400,
117400, 118400, 185400)
CAUTION: Do not use wires, drills or other
devices to clean out metering holes or passages.
Do not use carburetor cleaner on non-metallic
parts.
NOTE: Use compressed air at a moderate
pressure setting (5-7 PSI). Blow in both directions
to clean out all openings and passages.
Fig. 26
Disassembly
1. Remove float bowl mounting screw (A),
washer (B) and float bowl ([C] Fig. 27).
Fig. 27
2. Remove float bowl gasket ([D] Fig. 28)
Fig. 28
CAUTION: Main jet ([A] Fig. 29) must be
removed before emulsion tube (B) is removed or
damage to threads of the emulsion tube will
result.
3. Remove main jet (A).
4. Remove carburetor emulsion tube ([B]
Fig. 29) with screwdriver #19061.