SYSTEM TESTING. Honda CBR125R

The Honda CBR125R is a lightweight and powerful motorcycle designed for both beginners and experienced riders. It features a liquid-cooled, single-cylinder engine with PGM-FI fuel injection, delivering reliable performance. The CBR125R also boasts a modern design with sleek bodywork and a comfortable riding position. This manual provides comprehensive service procedures, maintenance schedules, and troubleshooting information for the CBR125R, ensuring optimal performance and safety.

SYSTEM TESTING

COOLANT (HYDROMETER TEST)

Remove the inner cowl (page 2-7).

Remove the screw and radiator cap.

RADIATOR CAP

COOLING SYSTEM

Test the coolant gravity using a hydrometer (see below for "COOLANT GRAVITY CHART").

Look for contamination and replace the coolant if necessary.

After checking the gravity, install the radiator cap and screw securely.

Install the inner cowl (page 2-7).

SCREW

HYDROMETER

COOLANT GRAVITY CHART

(32)

(41)

(50)

Coolant temperature ° C ( ° F)

20 25 30 35

(59) (68) (77) (86) (95)

(104)

(113)

(122)

1.009

1.008

1.007

1.006

1.005

1.003

1.001

0.999

0.997

1.018

1.017

1.016

1.015

1.014

1.013

1.011

1.009

1.007

1.005

1.028

1.027

1.026

1.025

1.024

1.022

1.020

1.018

1.016

1.014

1.012

1.036

1.035

1.034

1.033

1.031

1.029

1.027

1.025

1.023

1.021

1.019

1.045

1.044

1.043

1.042

1.040

1.038

1.036

1.034

1.031

1.028

1.025

1.053

1.052

1.051

1.049

1.047

1.045

1.043

1.041

1.038

1.035

1.032

1.063

1.062

1.060

1.058

1.056

1.054

1.052

1.049

1.046

1.043

1.040

1.072

1.070

1.068

1.066

1.064

1.062

1.059

1.056

1.053

1.050

1.047

1.080

1.078

1.076

1.074

1.072

1.069

1.066

1.063

1.060

1.057

1.054

1.086

1.084

1.082

1.080

1.077

1.074

1.071

1.068

1.065

1.062

1.059

1.095

1.093

1.091

1.088

1.085

1.082

1.079

1.076

1.073

1.070

1.067

1.100

1.098

1.095

1.092

1.089

1.086

1.083

1.080

1.077

1.074

1.071

6-5

Key Features

Liquid-cooled engine
PGM-FI fuel injection
Sleek design
Lightweight
Powerful
Comfortable riding position
Comprehensive service manual

Frequently Answers and Questions

What type of engine oil is recommended for the CBR125R?

Honda recommends using "4-stroke motorcycle oil" or an equivalent with API classification SG or higher and JASO T 903 standard: MA. The viscosity should be SAE 10W-30.