Suzuki Burgman 400 - Service manual > Fuel Injection System Description

Precautions

Precautions for Emission Control Devices

Refer to "General Precautions.

General Description

AN400 motorcycles are equipped with a fuel injection system for emission level control. This fuel injection system is precision designed, manufactured and adjusted to comply with the applicable emission limits. With a view to reducing CO, NOx and HC, all of the fuel injection volumes are stringently controlled with the programmed injection maps in the ECM by varying engine conditions. Adjusting, interfering with, improper replacement, or resetting of any of the fuel injection components may adversely affect injection performance and cause the motorcycle to exceed the exhaust emission level limits. If unable to effect repairs, contact the distributor's representative for further technical information and assistance.

1. Fuel injector
2. Throttle body
3. Fuel feed hose
4. Fuel filter (For high pressure)
5. Fuel pump
6. Fuel mesh filter (For low pressure)
7. Fuel pressure regulator

1. Pressurized fuel
2. Before-pressurized fuel
3. Relived fuel

Crankcase Emission Control System Description

The engine is equipped with a PCV system. Blow-by gas in the engine is constantly drawn into the crankcase, which is returned to the combustion chamber through the PCV (breather) hose, air cleaner and throttle body.

1. Fresh air
2. Fuel/Air mixture
3. Exhaust gas
4. Blow-by gas

Exhaust Emission Control System Description

The exhaust emission control system is composed of the three-way catalyst system.

1. Fuel injector
2. HO2 sensor
3. Three-way catalyst

1. Fresh air
2. Fuel/Air mixture
3. Exhaust gas

Noise Emission Control System Description

TAMPERING WITH THE NOISE CONTROL SYSTEM PROHIBITED: Local law or federal law prohibits the following acts or the causing thereof:

• 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 new vehicle for the purpose of noise control prior to its sale or delivery to the ultimate purchaser or while it is in use.
• 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:

• Removing or puncturing the muffler, baffles, header pipes, screen type spark arrester (if equipped) or any other component which conducts exhaust gases.
• Removing or puncturing the air cleaner case, air cleaner cover, baffles or any other component which conducts intake air.
• Replacing the exhaust system or muffler with a system or muffler not marked with the same model specific code as the code listed on the Motorcycle Noise Emission Control Information label.

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