Troubleshooting - Yamaha YDRA Owner's/Operator's Manual

MAINTENANCE
EXHAUST EMISSION CONTROL SYSTEM
1
AND COMPONENTS
2
• ELECTRONIC FUEL
INJECTION
• ELECTRONIC CONTROL
3
UNIT & PLUG, SPARK
• CRANKCASE 1 & HEAD,
CYLINDER 1
• AIR FILTER ASSY.
4
• MUFFLER
• CARBON CANISTER
5
• INVERSION VALVE
6
The above items and the
corresponding abbreviations are
provided in accordance with U.S.
EPA REGULATIONS FOR SMALL
7
NONROAD ENGINES and the
CALIFORNIA REGULATIONS FOR
NEW 1995 AND LATER OFF-
8
HIGHWAY RECREATIONAL
VEHICLES AND ENGINES.
The abbreviations conform to the
9
latest version of the SAE's
recommended practice document
J1930, "Diagnostic Acronyms,
Terms, and Definitions For
10
Electrical/Electronic System."
It is recommended that these items
be serviced by a Yamaha dealer or
11
other qualified mechanic.
8-3
Item 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
JC2