Honda NU50 - Automatic Choke System

~HONDA
~ NUSO· NUSOM
AUTOMA TIC CHOKE
TECHNICAL FEATURES
BIMETAL STRIP
An
automatic choke richens the fuel mixture for cold engine staning_ The choke system has a b .... starter chamber and a control
box.
CARBURETOR
INLET PIPE
CONTROL BOX ---..
BYSTARTE R CHAMBE R
The bystarter chamber is tike an air cleaner box except it supplies air 10 the carburetor choke circuit and directly to the control
00'.
CONTROL BOX
The camra! box has three control lines connected to it; 111 an air line from the bystarter. 121 a fuel line from the carburetor
choke circuit, and (3) a fuel line to the intake pipe. The flow of air and fuel through these lines is controHed by 8 bimetal strip
Jnd valve inside the control box.
. iF=~
Dilte of Issue: Nov., 1981
::0 HONDA MOTOR CO .• LTD.
SECONDARY
AIR
•
RICH
MIXTURE
•
CONTROLLED
MIXTURE
•
155
AlA CLEANER
(BYSTARTER CHAMBER)
CARBURETOR
(CHOKE CI AeUlT)
INLET PIPE
14-3