TOHATSU MFS 20C - Off-Idle Passage

4
4-7
4st 9.9/15/20 2008
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.
a
b
c
d
i
j
h
m
k
l
f
g
a - Air intake
b - Air vent inlet
c - Air-bleed inlet
d - Slow air jet
e - Bypass port
f - Idle Port
g - Throttle valve
h - Fuel inlet
i - Chamber drain
j - Main jet
k - Slow jet
l - Outlet check valve - Accelerator pump circuit
m - Choke valve
2) Off-Idle Passage
E_MFS20C_ch04_090105.qxd 09.1.20 5:24 PM ページ 7