Noise Emission Control System - Honda 1998 VT750C Service Manual

GENERAL INFORMATION
EVAPORATIVE EMISSION CONTROL SYSTEM (CALIFORNIA TYPE ONLY)
This model complies with California Air Resources Board evaporative emission requirements.
Fuel vapor from the fuel tank and carburetors is routed into the evaporative emission (EVAP) canister where it is absorbed
and stored while the engine is stopped. When the engine is running and the evaporative emission (EVAP) purge control
valve is open, fuel vapor in the EVAP canister is drawn into the engine through the carburetor. At the same time, the EVAP
carburetor air vent (CAV) control valve is open and air is drawn into the carburetor through the valve.
EVAP PURGE CONTROL VALVE
\
EVAP CANISTER
EVAP CAV
~
CONTROL VALVE
EVAP CAV
/
CONTROL VALVE
(ENGINE STOP)
<:==
TO OPEN AIR
¢J :
FRESH AIR
~ : FUEL VAPOR
NOISE EMISSION CONTROL SYSTEM
TAMPERING WITH THE NOISE CONTROL SYSTEM IS PROHIBITED: Federal law prohibits the following acts or the causing
thereof: (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 new vehicle for the purpose of noise control prior to its sale or
delivery to the ultimate purchaser 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.
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