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Route the carburetor heater wire and carburetor
drain hose properly
(page
1·24).
Connect
the
ca
rburetor
heater connector.
Install the air cleaner housing (page 5-5).
Perform the following
inspections
and adjustments:
-
engine
idle
speed
(page
3- 15)
-
throttle operation
(page
3-5)
-
pitot
screw
if
it was
repla
ced (page
5-19)
Periorm
the
initial setting (page 24-6) after all carbu-
retor adjustments have been
completed.
PILOT SCREW ADJUSTMENT
IDLE DROP PROCEDURE
Damage
fO
the pllor
screw
seat
will
occur
If
the
pdot
screw
IS
lightened
agamstlhe
seat
•
The
pi
lot screw is
factory
pre-set and no adjust-
ment is necessary unless the
pilot
screw is
replaced .
•
Use a tachometer with graduations of 50 rpm
(min"
) or smaller
that will accurately indicate a
50
rpm
(min"
) cha nge.
,
.
Remove the
recoil
starter
cover
(page
2-4).
Tu
rn the pilot sc rew clockwise until it seats
lightly, then back it
out
to the
specification
given.
This
is
an initial sening prior to
the
final pilot
screw adjustment.
TOOL:
Pilot
screw
wrench
07KMA·MN90101 or
07KMA·MN9A100
(U.S.A.
only)
INITIAL
OPENING
:
A,eM
type:
2 tums out
U
type:
1-3 /4 tums
out
2. Warm up
the
engine to operating
temperature.
Stop and go riding for
10
minutes
is
sufficient.
3. Stop the engine and connect a tachometer
according to
the tachometer
manufacturer's
instructions.
4.
Start the engine and adjust the
idle
speed with
the thronle stop
screw.
IDLE
SPEED:
1,400:t 100 rpm
(min-'
)
5. Turn the pilot screw in
or
out slowly
to
obtain the
highest
engine speed.
6.
Lightly
open the
throttle
2-3
times, then ad just
the idle speed wi th the thronle stop screw.
7. Turn the pilot screw in gradually until the engine
speed drops by 100
rpm
(min 'I.
B.
Turn
the pilot screw out to the final opening
.
FINAL
OPENING:
3 /4 tum out from the position
obtained
step
#7
9. Readjust the
idle
speed with the thronle stop
screw.
FUEL SYSTEM
5-19
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