2015 YAMAHA WR 250F check engine

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Page 7 of 430

YAMAHA WR 250F 2015  Owners Manual EAS2GB2005
SAFETY INFORMATION
THIS MACHINE IS DESIGNED STRICTLY FOR COMPETITION USE, ONLY ON A CLOSED 
COURSE. It is illegal for this machine to be operated on any public street, road, or highway. Off

Page 11 of 430

YAMAHA WR 250F 2015  Owners Manual 1
2
3
4
5
6
7
8
9
10
TOCTOC
TABLE OF CONTENTS
GENERAL INFORMATION
SPECIFICATIONS
PERIODIC CHECKS AND ADJUST-
MENTS
TUNING
CHASSIS
ENGINE
COOLING SYSTEM
FUEL SYSTEM
ELECTRICAL SYSTEM
TROUBLESHOOTING

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YAMAHA WR 250F 2015  Owners Manual CONTROL FUNCTIONS................................................................................ 1-21
INDICATOR LIGHTS AND WARNING LIGHTS ....................................... 1-21
ENGINE STOP SWIT

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YAMAHA WR 250F 2015  Owners Manual DESCRIPTION
1-4
EAS2GB2009
DESCRIPTION
TIP
Designs and specifications of the vehicle are subject to change without notice. Therefore, please 
note that the descriptions in this manual may be different

Page 23 of 430

YAMAHA WR 250F 2015  Owners Manual IMPORTANT INFORMATION
1-9
EAS20180
IMPORTANT INFORMATION
EAS2GB2022PREPARATION FOR REMOVAL AND DIS-
ASSEMBLY
1. Before the jobs, completely remove mud, 
dust, and the like in order to prevent the en-

Page 26 of 430

YAMAHA WR 250F 2015  Owners Manual BASIC SERVICE INFORMATION
1-12
ECA
NOTICE
Handle electrical components with special 
care, and do not subject them to strong 
shocks.
ECA
NOTICE
Electrical components are very sensitive to 
and can be

Page 35 of 430

YAMAHA WR 250F 2015  Owners Manual CONTROL FUNCTIONS
1-21
EAS2GB2031
CONTROL FUNCTIONS
EAS2GB2032INDICATOR LIGHTS AND WARNING 
LIGHTS
1. Engine trouble warning light “ ”
2. Fuel level warning light “ ”
Fuel level warning light

Page 46 of 430

YAMAHA WR 250F 2015  Owners Manual STARTING AND BREAK-IN
1-32
EAS2GB2050
STARTING AND BREAK-IN
EAS2GB2051FUEL
Always use the recommended fuel as stated 
below. Also, be sure to use new gasoline the 
day of a race.
ECA
NOTICE
Use only u
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