Yamaha 4TX-AE1, Service Manual

Page: 68 / 332

3-9
VALVE CLEARANCE ADJUSTMENT
INSP
ADJ
NOTE:
NOTE:
NOTE:
Remove the valve lifters 1 and the pads 2 .
Place a rag in the timing chain space to prevent
pads from falling into the crankcase.
Identify each valve lifter 1 and pad 2 position
very carefully so that they can be reinstalled in
their original place.
Select the proper pad using the pad selecting
table:
Pad range
Pad Availability:
25 increments
No. 120
No. 240
1.20 mm
2.40 mm
Pads are available in
0.05 mm increments
The thickness a of each pad is indicated in hun-
dreths of millimeters on the pad upper surface.
Round off the last digit of the installed pad num-
ber to the nearest increment.
Last digit of pad
number
Rounded value
0 or 2 0
5 (NOT ROUNDED OFF)
8 10
EXAMPLE:
Installed pad number = 148
Rounded off value = 150
Pads can only be selected in 0.05 mm increments.