Honda ST50 1969 Shop Manual page 71

70 CT70 '78 ADDENDUM
Idle Speed Adjustment
I. Warm up the engine to operating temperature.
2.
Tum the throttle stop screw to
find the point of
lowest rpm. (Approx. 1,200rpm)
3. Turn the pilot screw to find the highest rpm. Usually
the correct setting is 1-3/4 turns open from a fully
closed position.
4. Set the idle speed to specifications with the throttle
stop screw.
Specified idle speed: 1,300 rpm
5. Turn the pilot screw to see
if
the speed increases.
lfthespeedincreases,repeat the above steps.
NOTE:
Fig. K7-2 (I) Throttle stop screw
(2} Pilot.screw
Turning the pilot screw in produces a lean fuel/air mixture, turning the screw out produces a rich fuel/air mixture.
2. MAlNTENANCE SCHEDULE
Perform the Pre-Ride Inspection described in the Owner's Manual at each maintenance period.
I: INSPECT, CLEAN, ADJUST, OR REPLACE IF NECESSARY. C· CLEAN R· REPLACE A· ADJUST
~
WHICHEVER .
ODOMETER READING (NOTE(2)J
COMES
600mi.
2,400mi. 4,800mi. 7,200mi.
FIRST
•
(l,OOOkm) (4,000km) (8,000km)
(12,000km)
M
EVERY
ENGINE OIL YEAR R
REPLACE EVERY l ,200mi. (2,000km)
• ENGINE OIL FILTER ROTOR
c
• ENGINE OIL FILTER SCREEN
c
AIR CLEANER
NOTE(I)
c c
c
• FUEL LINES
I I
I
SPARK PLUG I I
R
• VALVE CLEARANCE
I I I I
• CONT ACT BREAKER POINTS
I I I I
• IGNITION TIMING
I I I
I
• CAM CHAlN TENSION A A A
A
• THROTTLE OPERATION
I
I
I I
• CARBURETOR IDLE SPEED I I I I
• CARBURETOR CHOKE I I
I
DRIVE CHAIN
NOTE(3)
INSPECT EVERY 600
mi.
(l,OOOkm)
BATTERY ELECTROLYTE MONTH I I
I I
BRAKE SHOE WEAR I
I I
BRAKE FREE PLAY I I I I
• BRAKE LIGHTING SWITCH I I I I
• HEADLIG~T AIM I I
I I
- CLUTCH fREE PLAY I I I I
SIDE STANO I
I I
• SUSPENSION I
I I I
• SPARK ARRESTER I
I I
• NUTS, BOLTS, FASTENERS I I I I
•• WHEElS I I I I
.. STEERING HEAD BEARING
I
I
•• IN THE INTEREST OF SAFETY, WE RECOMMEND THESE ITEMS BE SERVICED ONLY BY AN AUTHO-
RIZED HONDA DEALER.
• SHOULD BE SERVICED BY AN AUTHORIZED HONDA DEALER, UNLESS THE OWN.ER HAS PROPER
TOOLS AND SERVICE DATA AND IS MECHANICALLY QUALIFIED.
NOTES:
(I)
More frequent service may be required when riding in dusty areas.
(2) For higher odometer readings, repeat at the frequency interval established here.
2 of 2 (3) Initial service period 200 miles.