Suzuki GSF650A Service Manual page 41

10) Insert the thickness gauge between the tappet and
the cam. If the clearance is out of specification,
adjust it into the specified range.
Special tool
(A): 09900–20803 (Thickness gauge)
11) Turn the crankshaft clockwise 360° (one full rotation)
and align the match mark on the crankshaft with the
mating surfaces of crankcases. Also, position the
notches "E" on the right end of each camshaft as
shown. Then, measure the following valve
clearances "G".
• Cylinder #2: Intake valve clearance
• Cylinder #3: Exhaust valve clearance
• Cylinder #4: Intake and exhaust valve clearances
12) Measure the valve clearances of the remaining
valves "E" and adjust them if necessary.
"E"
"G"
Camshaft position
Measuring position
(A)
I717H1020005-01
"E"
I718H1020018-02
"G" "G"
"G"
I717H1020006-01
Notch "E" position
faces inside
"G"
Maintenance and Lubrication:
Adjustment
The clearance is adjusted by replacing the existing
tappet shim by a thicker or thinner shim.
1) Remove the intake or exhaust camshafts. Refer to
"Engine Top Side Disassembly in Section 1D
(Page 1D-24)".
2) Remove the tappet (1) and shim (2) by fingers or
magnetic hand.
1
3) Check the figures printed on the shim. These figures
indicate the thickness of the shim, as illustrated.
4) Select a replacement shim that will provide a
clearance within the specified range. For the
purpose of this adjustment, a total of 21 sizes of
tappet shim are available ranging from 1.20 to 2.20
mm in steps of 0.05 mm.
CAUTION
!
Both the right and left valve clearances
should be as closely as possible.
0B-8
2
I718H1020019-01
I310G1020023-01