Honda CBR125R Owner's Manual page 278

CRANKSHAFT/BALANCER/TRANSMISSION
Drive in new bearings into the right crankcase until
they are fully seated using the special tools.
TOOLS:
Mainshaft bearing (marked side facing up):
Driver
Attachment, 37 x 40 mm
Pilot, 17 mm
Countershaft bearing (sealed side facing down):
Driver
Attachment, 32 x 35 mm
Pilot, 15 mm
Balancer bearing (marked side facing up):
Driver
Attachment, 37 x 40 mm
Pilot, 12 mm
After installation, apply engine oil to each bearing
rotating area.
Apply locking agent to the mainshaft bearing set-
ting plate bolt threads (page 1-16).
Install the setting plate and bolts.
Tighten the bolts.
LEFT CRANKCASE SIDE
Remove the countershaft oil seal from the left crank-
case.
Drive out the countershaft and balancer bearings.
Remove the mainshaft bearing using the special
tools.
TOOLS:
Bearing remover head, 12 mm
Bearing remover shaft
Remover weight
12-20
ATTACHMENT
07749-0010000
07746-0010200
07746-0040400
07749-0010000
07746-0010100
07746-0040300
07749-0010000
07746-0010200
07746-0040200
PLATE
COUNTERSHAFT
BEARING
07936-1660110
07936-1660120
07741-0010201
BEARING
BALANCER BEARING
MAINSHAFT BEARING
DRIVER
PILOT
BOLTS
OIL SEAL