Kohler SV810-840 Service Manual page 36

Section 5
Fuel System and Governor
Slow Circuit:
port this air fuel mixture is delivered to the idle progression chamber. From the idle progression chamber the air
fuel mixture is metered through the idle port passage. At low idle when the vacuum signal is weak, the air fuel
becomes great enough so the main circuit begins to work.
Fuel Inlet
Float Valve
Seat
Float Valve
Main Jet
Air
Fuel
Mixture
Figure 5-2. Slow Circuit (Typical).
5.4
Idle Speed
(RPM)
Adjustment
Screw
Float
Main
Emulsion
Hole
Slow Jet
Slow Air Bleed Jet
Main Air Bleed Jet
Choke Valve
Bowl Vent
Nikki Carburetors Only
Idle Port
Idle
Progression
Chamber
Low (Idle) Mixture Screw
Transfer
Spring
Port
Idle Limiter Jet
Idle Port
Idle Progression Holes
Throttle Valve
Main Nozzle
Slow Passage Pipe
Main Jet
Fuel Shut-Off Solenoid
with Main Jet
Idle Limiter
Jet
Capped/Preset
Low (Idle)
Mixture Setting