Honda C65 - Float Chamber (S50 and S65)

3.8 CARB URETOR
..o . ~c- -.s-:-
-- -·::h enters thr ough · i e. X poss es
-e v @ where i is e•e ed and then
- e fu el from the fuel passage hol e ®
- s::" rged from p ilot o lel @ tow ard the
o lv e @ as a fuel a ir mix·ure and finally
as . "·h the main air stream befor e entering the
3. FL OAT CHAMBER
For 550 and 565, the fuel from the tonk enters
fuel passage
@, passes by valve seat @, float valve
~ and enters float chamber @. As the fuel fill the
flo at chamber, the float @ rises and forces the float
v alv e against the valve seat with the float arm @
o shut off the fuel flow into the float chamber. As
the fuel
in the float chamber is consumed and the
fuel level drops,
the float also lowers with the fuel
level and
allows the float valve to unseat from the
va
lv e seat, permi tting the fuel to enter the float
chamber. This cycle is repeated to maintain a con -
st ant fuel level.
A spring is incorporated in the float valve @)
wh ere the float arm @ make contact, for the purpose
of absorb ing the shock and pre venting wear to the
va
lve and seat caused by the fluctuation of the flo at
wh en driving over rough road and in addition , it
se rves to maintain a constant full le vel in the float
chamber.
Ov er flow pipe
If any foreign object shou ld get stuck in between
he float valve and seat and causes the fuel to over-
flow out of the sl ow jet or the needle jet, the fuel
will enter the engine and dilutes the oil. To prevent
suc h an occurance, an overflow pipe @ is in cor-
po rated into the fl oa t chamber @. The outlet of the
ov erflow pipe @ is high er than the normal fuel l eve l
and therefo re, has no effect, but under overflow
con dition, the fuel level rises and the overflow fuel
is
drained o ui s ide. (Fig. 3- 1 08)
Figure 3- 108. Float IS65l
Fieur
e. 3 -10 9. float ~h oinber
45
~ 0 ·er "low pipe
onnal fue l le vel
8 Float cha mber