Off-Idle Passage - TOHATSU MX 50D2 Service Manual

Fuel System

2) Off-Idle Passage

a
å
#2, #3 carburetor only)
a - Air intake
b - Air-bleed inlet
c - Slow air jet
d - Bypass port
e - Pilot screw
f - Idle Port
g - Throttle valve
When throttle valve is turned to a position over bypass port, the bypass port is exposed to vacuous pressure existing in the
back of throttle valve. The vacuous pressure causes the fuel to be ejected from bypass port and idle port.
4-12
b
k
c
j
d
i
h - Fuel inlet
i - Main jet
j - Slow jet
k - Choke valve
å Air
∫ Air-fuel mixture
GB
e
f
g
∫
h
2st 50D2 2011