Evaporative Emissions; Types With Oem Provided Fuel Tanks - Honda GX240 Technical Manual

GX240 • GX270 • GX340 • GX390 (UT2/RT2) Technical Manual
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VAPORATIVE EMISSIONS

Types with OEM provided fuel tanks

The OEM is responsible for meeting the EVAP emissions regulations for products sold in California (California Air
Resources Board) and the 49 sates (U.S. Environmental Protection Agency). This regulations concern evaporative
emissions from the fuel system.
Shown below is a simplified overview of required components.
AIR OR EXHAUST GAS
FUEL VAPOR
CHARGE TUBE (BREATHER)
The charge tube should be
located as high as possible in
the fuel tank. Fuel should not
flow through the charge tube
during regular use or during
transportation
CARBON CANISTER
Install the carbon canister so
that the intake port will not be
affected by the dynamic
pressure of cooling air.
Additional information regarding manufacturers of CARB certified fuel system components can be found at:
http://www.arb.ca.gov/msprog/offroad/sore/sorecomponent/sorecomponent.htm#.
California Air Resources Board information is available at the following website:
www.arb.ca.gov/msprog/OFFROAD/sore/sorectp/sorectp.htm
U.S. Environmental Protection Agency information is available at the following website:
http://edocket.access.gpo.gov/2008/pdf/E8-21093.pdf
© 2010 American Honda Motor Co., Inc — All Rights Reserved
FUEL VALVE
PURGE TUBE
Maximum length: 80 cm.
FUEL CAP (SEALED)
(must be tethered and have positive
feedback mechanism for closure.)
FUEL TUBE
Use approved low permeation
fuel tube between the filter
and the fuel tank.
FUEL FILTER
PURGE JOINT
Connect the purge tube to the joint on
the dirty side of the air cleaner.
Joint outer diameter: 11 mm
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