Honda CBR125R Owner's Manual page 272

CRANKSHAFT/BALANCER/TRANSMISSION
MAINSHAFT/COUNTERSHAFT
Check the spline grooves and sliding surfaces for
abnormal wear or damage.
Measure the O.D. of the mainshaft and countershaft
at the gear and bushing sliding areas.
SERVICE LIMITS:
Mainshaft
(at M5 gear bushing):
Countershaft
(at C1 gear bushing):
(at C2 gear bushing):
Calculate the bushing-to-shaft clearance.
SERVICE LIMIT:
M5, C1, C2: 0.10 mm (0.004 in)
SHIFT DRUM/DRUM JOURNAL
Inspect the shift drum end for scoring, scratches, or
evidence of un sufficient lubrication.
Check the shift drum grooves for abnormal wear or
damage.
Measure the shift drum O.D. at each end.
SERVICE LIMITS:
Right side: 25.90 mm (1.020 in)
Left side:
Check the shift drum journal in the each crankcase
for excessive wear or damage.
Measure the shift drum journal I.D.
SERVICE LIMITS:
Right side: 26.50 mm (1.043 in)
Left side:
Calculate the shift drum- to-shift drum journal clear-
ances.
SERVICE LIMITS:
Right side: 0.07 mm (0.003 in)
Left side:
SHIFT FORK
Check the shift forks for deformation or abnormal
wear.
Check the shift fork guide pin for abnormal wear or
damage.
Measure each shift fork claw thickness.
SERVICE LIMIT: 4.82 mm (0.190 in)
Measure I.D. of each fork.
SERVICE LIMIT: 10.03 mm (0.395 in)
12-14
16.93 mm (0.667 in)
14.90 mm (0.587 in)
19.92 mm (0.784 in)
24.90 mm (0.980 in)
25.50 mm (1.004 in)
0.08 mm (0.003 in)
M5
C1
RIGHT SIDE
RIGHT SIDE: LEFT SIDE:
C2
SHIFT DRUM