EMISSION CONTROL SYSTEMS (CM type only). Honda CBR125R

EMISSION CONTROL SYSTEMS (CM type only). Honda CBR125R

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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.

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EMISSION CONTROL SYSTEMS (CM type only). Honda CBR125R | Manualzz

GENERAL INFORMATION

EMISSION CONTROL SYSTEMS (CM type only)

EXHAUST EMISSION REQUIREMENT

The U.S. Environmental Protection Agency (EPA), California Air Resources Board (CARB) and Transport Canada require manufacturers to certify that their motorcycles comply with applicable exhaust emissions standards during their useful life, when operated and maintained according to the instructions provided.

NOISE EMISSION REQUIREMENT

The EPA also requires that motorcycles built after January 1, 1983 comply with applicable noise emission standards for one year or 3,730 miles (6,000 km) after the time of sale to the ultimate purchaser, when operated and maintained according to the instructions provided.

WARRANTY COMPLIANCE

Compliance with the terms of the Distributor's Limited Warranty for Honda Motorcycle Emission Control Systems is necessary in order to keep the emissions system warranty in effect.

SOURCE OF EMISSIONS

The combustion process produces carbon monoxide (CO), oxides of nitrogen (NO x

) and hydrocarbons (HC). Control of carbon monoxide, oxides of nitrogen and hydrocarbons is very important because, under certain conditions, they react to form photochemical smog when subject to sunlight. Carbon monoxide does not react in the same way, but it is toxic.

Honda Motor Co., Ltd. utilizes various systems (page 1-33) to reduce carbon monoxide, oxides of nitrogen and

hydrocarbons.

CRANKCASE EMISSION CONTROL SYSTEM

The engine is equipped with a closed crankcase system to prevent discharging crankcase emissions into the atmosphere.

Blow-by gas is returned to the combustion chamber through the air cleaner housing and throttle body.

AIR CLEANER

HOUSING

THROTTLE BODY

CRANKCASE

BREATHER HOSE

FRESH AIR

BLOW-BY GAS

1-32

GENERAL INFORMATION

EXHAUST EMISSION CONTROL SYSTEM

The exhaust emission control system is composed of a three-way catalytic converter and PGM-FI system.

THREE-WAY CATALYTIC CONVERTER

This motorcycle is equipped with a three-way catalytic converter.

The three-way catalytic converter is in the exhaust system. Through chemical reactions, it converts HC, CO and NO x

in the engine’s exhaust to carbon dioxide (CO

2

), nitrogen (N

2

), and water vapor.

No adjustment to these systems should be made although periodic inspection of the components is recommended.

NOISE EMISSION CONTROL SYSTEM

TAMPERING WITH THE NOISE CONTROL SYSTEM IS PROHIBITED: U.S. Federal law prohibits, or Canadian provincial law may prohibit the following acts or the causing there of: (1) The removal or rendering inoperative by any person, other than for purposes of maintenance, repair or replacement, of any device or element of design incorporated into any vehicle for the purpose of noise control prior to its sale or delivery to the ultimate customer or while it is in use; (2) the use of the vehicle after such device or element of design has been removed or rendered inoperative by any person.

AMONG THOSE ACTS PRESUMED TO CONSTITUTE TAMPERING ARE THE ACTS LISTED BELOW:

1. Removal of, or puncturing of the muffler, baffles, header pipes or any other component which conducts exhaust gases.

2. Removal of, or puncturing of any part of the intake system.

3. Lack of proper maintenance.

4. Replacing any moving parts of the vehicle, or parts of the exhaust or intake system, with parts other than those specified by the manufacturer.

1-33

MEMO

2. BODY PANELS/EXHAUST SYSTEM

2

BODY PANEL LOCATIONS ························ 2-2

SERVICE INFORMATION ··························· 2-3

TROUBLESHOOTING ································· 2-3

PILLION SEAT ············································· 2-4

SINGLE SEAT·············································· 2-4

GRAB RAIL ·················································· 2-5

REAR COWL················································ 2-5

FUEL TANK COVER···································· 2-6

INNER COWL ·············································· 2-7

LOWER COWL ············································ 2-8

MIDDLE COWL ··········································· 2-9

UPPER COWL ··········································· 2-10

FRONT FENDER ······································· 2-11

REAR FENDER ·········································· 2-12

EXHAUST PIPE/MUFFLER ······················ 2-13

2-1

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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.
What is the recommended tire pressure for the CBR125R?
The recommended cold tire pressure is 200 kPa (2.00 kgf/cm2, 29 psi) for standard riding and 225 kPa (2.25 kgf/cm2, 33 psi) when carrying cargo.
What kind of brake fluid should I use for the CBR125R?
The recommended brake fluid is DOT 3 or DOT 4.

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