Measure the outside diameter [D] of the seating pattern on the valve seat.
If the outside diameter is too large or too small, repair the seat (see Valve Seat Repair).
Valve Seating Surface Outside Diameter Standard:
Exhaust 23.9 24.1 mm (0.941
0.949 in.)
Intake 30.4 30.6 mm (1.197
1.205 in.)
Measure the seat width [E] of the portion where there is no build-up carbon (white portion) of the valve seat with a vernier caliper.
Good [F]
If the width is too wide [G], too narrow [H] or uneven [J], repair the seat (see Valve Seat Repair).
Valve Seating Surface Width Standard:
Exhaust 0.8 1.2 mm (0.03
0.05 in.)
Intake 0.5 1.0 mm (0.02
0.04 in.)
Service Code Reading
The service code(s) is displayed on the LCD by the number
of two digits.
NOTE
The service code of the KIBS and ABS adds “b” at the
left side of the code.
The service code of the ESD adds “E” at the left side of
the code.
When there are a number of problems, all the serv ...
Subthrottle Valve Actuator Inspection
NOTE
Be sure the battery is fully charged.
Remove the air cleaner housing (see Air Cleaner Housing
Removal in the Fuel System (DFI) chapter).
Turn the ignition switch to ON.
Check to see that all the subthrottle valves [A] open and
close smoothly.
Turn the ignition switch to OFF.
I ...
Exhaust Butterfly Valve Actuator Removal
NOTICE
Never drop the exhaust butterfly valve actuator especially
on a hard surface. Such a shock to the actuator
can damage it.
Remove:
Front Seat (see Front Seat Removal in the Frame chapter)
Clamp [A]
Screws [B] and Washers
Slide the covers [A] and loosen the lock nuts [B] ...