Exhaust Emission Control System And Components - Yamaha YDRA Manuel D'exploitation

EXHAUST EMISSION CONTROL SYSTEM
AND COMPONENTS
Item
• ELECTRONIC FUEL
INJECTION
• ELECTRONIC CONTROL
UNIT & PLUG, SPARK
• CRANKCASE 1 & HEAD,
CYLINDER 1
• AIR FILTER ASSY.
• MUFFLER
• CARBON CANISTER
• INVERSION VALVE
The above items and the
corresponding abbreviations are
provided in accordance with U.S.
EPA REGULATIONS FOR SMALL
NONROAD ENGINES and the
CALIFORNIA REGULATIONS FOR
NEW 1995 AND LATER OFF-
HIGHWAY RECREATIONAL
VEHICLES AND ENGINES.
The abbreviations conform to the
latest version of the SAE's
recommended practice document
J1930, "Diagnostic Acronyms, Terms,
and Definitions For
Electrical/Electronic System."
It is recommended that these items
be serviced by a Yamaha dealer or
other qualified mechanic.
JC2
MAINTENANCE
Abbreviation
EFI
ECU
PCV (Positive Crankcase
Ventilation)
ACL (Air Cleaner)
MUFF., 2
CC
IV
TROUBLESHOOTING
If the vehicle's engine will not start,
use the following chart:
Cause
Fuel System
No fuel in tank
Fuel pump
inoperable
Clogged fuel
line
Foreign matter
in fuel filter
Dirty injector
Electrical System
Spark plug dirty
with carbon, or
wet
Faulty ignition
system
Remedy
Fill fuel tank
Consult Yamaha
dealer
Consult Yamaha
dealer
Clean fuel filter –
Consult Yamaha
dealer
Consult Yamaha
dealer
Clean carbon or
wipe spark plug
dry
Consult Yamaha
dealer
7-3
1
2
3
4
5
6
7
8
9
10
11