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FRONT WHEEL/SUSPENSION/STEERING
Install the side collar into the right wheel hub.
When installing the front wheel, align the following:
– Brake disc between the brake pads
– Speedometer gear box groove with the boss on
the left fork leg
Be careful not to damage the brake pads.
Apply a thin coat of grease to the axle rolling sur-
face.
Install the axle from right side.
Install and tighten the axle nut to the specified
torque.
TORQUE: 59 N·m (6.0 kgf·m, 44 lbf·ft)
Connect the speedometer cable to the speedometer
gear box by aligning the tab of the cable with the
hole of the gear box.

FORK

REMOVAL
Remove the following:
– Front fender (page 2-11)
– Front wheel (page 13-13)
Remove the brake caliper mounting bolts and brake
Do not suspend the
caliper/bracket assembly.
brake caliper/
bracket assembly
from the brake
hose. Do not twist
the brake hose.
13-18
SIDE COLLAR
Align
NUT
SPEEDOMETER CABLE
CALIPER/BRACKET ASSEMBLY
AXLE
GEAR BOX
BOLTS

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Do you have a question about the CBR125R and is the answer not in the manual?

Questions and answers

Steven young
April 7, 2025

Hey guys I have oil dripping from crankcase overflow, very minimal, doesn’t happen on idle only when been riding for a while, I’ve done an oil change and correct amount of oil displayed on dipstick when warm, what could be the issue/options

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1 comments:
Mr. Anderson
April 9, 2025

Oil dripping from the crankcase overflow on a Honda CBR125R after riding for a while could be caused by:

1. Overfilled engine oil – too much oil can increase pressure and cause overflow.
2. Clogged or dirty oil strainer screen – this can restrict oil flow and increase internal pressure.
3. Damaged or worn sealing rubber on the oil strainer screen – may cause leaks.
4. Oil leaks not properly fixed – such as from the crankcase cover or other seals.

Check oil level, clean the strainer screen, inspect seals, and ensure proper installation.

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Traydon Thursting
April 13, 2025

Hello there, my name is Traydon I have been riding for about 2 months now I’m completely new to keeping motorbikes Recently I’ve had an issue with my motorbike it’s a Honda cbr 125cc 2011 model. I have an idle problem will start but struggles to keep idle and have to keep using the throttle from it not cutting out it also cuts out at traffic lights due to not liking to stop Revving. Tray.

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1 comments:
Mr. Anderson
April 13, 2025

The idle problem in a 2011 Honda CBR125R that struggles to maintain idle and cuts out at traffic lights could be caused by an issue with the air cut valve or air cut system in the carburetor. Even after a carb rebuild with new jets and seals, the problem persisted until attention was given to this specific component. A faulty or malfunctioning air cut valve can cause over-revving, poor idling, and stalling when coming to a stop.

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