Suzuki GSX-R750 Service Manual page 116

• Remove the middle crankcase and measure the width of the
compressed plastigauge using the envelope scale. This mea-
surement should be taken at the widest part of the com-
pressed plastigauge.
 Balancer shaft journal oil clearance:
Standard: 0.028 – 0.052 mm (0.0011 – 0.0020 in)
Service Limit: 0.080 mm (0.031 in)
• If the oil clearance exceeds the service limit, select the speci-
fied bearings from the bearing selection table.
• Check the corresponding crankcase journal I.D. code number
A, "A" or "B" which is stamped on the rear of upper crank-
case.
• Check the corresponding balancer shaft journal O.D. code
number B, "A" or "B" which is stamped on the balancer shaft.
 Bearing selection table
Code
A
Crankcase
I.D. A
B
 Crankcase I.D. specification
Code
A
B
 Balancer shaft journal O.D. specification
Code
A
B
 09900-20205: Micrometer (0 – 25 mm)
 Bearing thickness specification
Color (Part No.)
Green
(12229-40F50-0A0)
Black
(12229-40F50-0B0)
Brown
(12229-40F50-0C0)
NOTE:
The balancer shaft journal bearings on upper and middle crank-
cases are the same.
Balancer shaft journal O.D. B
A
Green
Black Brown
I.D. specification
26.000 – 26.008 mm
(1.0236 – 1.0239 in)
26.008 – 26.016 mm
(1.0239 – 1.0243 in)
O.D. specification
22.984 – 22.992 mm
(0.9049 – 0.9052 in)
22.976 – 22.984 mm
(0.9046 – 0.9049 in)
Thickness
1.486 – 1.490 mm
(0.0585 – 0.0587 in)
1.490 – 1.494 mm
(0.0587 – 0.0588 in)
1.494 – 1.498 mm
(0.0588 – 0.0590 in)
B
Black
ENGINE 3-63