Pilot (Or Air) Screw Installation; Idle Drop Procedure; Pilot (Or Air) Screw Adjustment 8-1 - Honda Motorcycle Service Manual

FUEL SYSTEM
PILOT (OR AIR) SCREW INSTALLATION
Install the screw and return
it
to its original position as noted
during removal.
Perform the pilot screw (or air screw) adjustment if a new
screw is installed.
replace the pilot screws in the other carburetors for pro-
per pilot screw adjustment.
DO not install a limiter cap or plug over a pilot (or air)
PILOT SCREW ADJUSTMENT
IDLE DROP PROCEDURE (4 stroke, multi-carburetor, emis-
sions control applicable models)
NOTE
Make sure the carburetor synchronization is within
specification before pilot screw adjustment.
The pilot screws are factory pre-set and no adjustment is
necessary unless the pilot screws are replaced.
.
Use a tachometer with graduations of 50 rpm or smaller
that will accurately indicate a 50 rpm change.
CARBURETOR
'\
I
PILOT SCRE
&LIMITER CAP
Turn each pilot screw in, then back
it
out t o the
specification given.
1. Turn each pilot screw clockwise until it seats lightly, then
back
it
out to the specification given. This is an initial set-
ting prior to the final pilot screw adjustment.
Turn No.1 pilot screw in or out slowly to obtain
the highest engine speed.
INITIAL OPENING: Refer to the Model Specific manual.
CAUTION
1
.
Tightening the pilot screw against its seat will damage
the seat.
2. Warm up to the engine to operating temperature. Stop
and go riding for 1 0 minutes is sufficient.
3. Attach a tachometer according t o its manufacturer's in-
structions.
4. Adjust the idle speed t o the specified rprn with the throttle
stop screw.
IDLE SPEED: Refer to the Model Specific manual.
5 . Turn No. 1 carburetor pilot screw in or out slowly to obtain
the highest engine speed.
6 . Perform step 5 for all the carburetor pilot screws.
7 . Lightly open the throttle 2-3 times, then adjust the idle
speed with the throttle stop screw.
8 , Turn No. I carburetor pilot screw in gradually until the en-
gine speed drops 5 0 rpm.
Turn No. I pilot screw in gradually until the engine
weed draws 50rwm.
Date of Issue: March. 1995
0
HONDA MOTOR CO.,LTD.