Carburetor Cleaning And Adjustment; Idle Adjustment - Honda C50 Shop Manual

92
6. MAINTENANCE INSPECTION
Locking nut
Figure 6- 26. Adjusting the carbu retor IC50, C50M,
C65, C65Ml
Figure 6- 27. Adjusting th e c;orbv reto r i$50, S65)
2. Adjustment
Loosen the lock nut and turn the ad justing screw.
C50, C50M, C65, C65M :
Tur n to the right to increase the lever fr ee ploy .
Turn to the left to decrease the lever free ploy.
550, 565 .. .
Turn to the left to increase the lever free ploy .
Turn to the right to decr ease the lever free p loy .
11) For model C50, C50M, C65 a nd C65M check
for slippage of the clutch and the disengaging
action.
!2 1 For adj usting the clutch on model S50, S65
remove the c lutch cover , loosen the locking
nut and adjust with the screw. (Fig. 6.24)
The ad justment of the clutch may a lso be
performed at the adjuster on t he clutch cable.
On C50, C50M, C65 and C65M modeL the
adj ustment con be made without remo ving the
c lutch cover. (Fig. 6-25)
3. Inspection (550, 565)
(1)
Check by kick sta rting and see if the engine
readi ly starts.
1 21 Start t he engine, grasp the clutch lever and
check to see
if
t he mot orcy cle starts moving
or t he engine stalls when the gear is shifted
into low.
!3) The mot orcycle should start moving smooth ly
as the clutch lever is r e leased gradua lly w hile
increasing the engine rpm.
11 . CARBURETOR CLEANING AND ADJUSTMENT
A dirty carburetor or carbu retor out of ad just-
ment wil l cause poor engine performance. As on
example, a ca r bureto r set to a lean fuel a ir mixtur e
will cause the engine t o over heat whil e a rich mixtur e
wil l cause engine to run sluggish. An overnowing o f
fuel from t he ca rbur etor is a possi ble fire hazard,
there fore, periodic clea ning and ad justment shou ld b e
per forme d.
1. Cleaning
a. Disassemble the ca rburetor and wash th e parts
in gasoline.
b. Blow out the nozzles with compressed air and
after cleaning and reassembly, make the ad just-
ment.
2. Idle adjustment
The idle adjustment is pe rformed with both the
thrott le stop screw and t he air screw by the
fo llowing procedure. (Fig. 6- 26, 6- 27)
(a) Set t he thrott le stop screw to t he specified
idling speed ( 1
ooo~
1200 rpm)
!bl Next, adjust the a ir screw by turning
s low~
in bo th directio n to obtain the highest eng ir e
speed.
Turni ng the screw in will produce a rich fu e
mixture.
Turning the scr ew o ut w ill produce a lean ' e
mixture.