2012 YAMAHA YFM250R check engine

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Page 96 of 134

YAMAHA YFM250R 2012  Owners Manual 8-19
84. Check the gasket for damage, and replace it if
necessary.
5. Make sure the gasket is properly positioned, then insert the tailpipe into the muffler and
align the bolt holes. 6. Install the bo

Page 97 of 134

YAMAHA YFM250R 2012  Owners Manual 8-20
8
ing, possibly leading to death, and start a fire.
Always let the exhaust system cool prior to
touching exhaust components.
EBU23940Adjusting the carburetor The carburetor should be checked and,

Page 98 of 134

YAMAHA YFM250R 2012  Owners Manual 8-21
8
TIPIf the specified idling speed cannot be obtained as
described above, have a Yamaha dealer make the
adjustment.EBU24047Adjusting the throttle lever free play The throttle lever free play shou

Page 99 of 134

YAMAHA YFM250R 2012  Owners Manual 8-22
8
4. Tighten the locknut.
5. Slide the rubber cover to its original position.
EBU24060Valve clearance The valve clearance changes with use, resulting in
improper air-fuel mixture and/or engine no

Page 108 of 134

YAMAHA YFM250R 2012  Owners Manual 8-31
8
EBU24882Lubricating the drive chain The drive chain must be cleaned and lubricated at
the intervals specified in the periodic maintenance
and lubrication chart, otherwise it will quickly wear
o

Page 109 of 134

YAMAHA YFM250R 2012  Owners Manual 8-32
8
essary. If a cable is damaged or does not move
smoothly, have a Yamaha dealer check or replace
it.
WARNING
EWB02581Inspect cables frequently and replace if dam-
aged. Corrosion can result when

Page 121 of 134

YAMAHA YFM250R 2012  Owners Manual 8-44
8
EBU25752Troubleshooting chart 
Check the fuel level in
the fuel tank.1. Fuel
There is enough fuel.There is no fuel.
Check the compression.
Supply fuel.
The engine does not start. 
Check the com

Page 123 of 134

YAMAHA YFM250R 2012  Owners Manual 9-2
9
EBU25933Storage Short-term
Always store your ATV in a cool, dry place and, if
necessary, protect it against dust with a porous
cover. NOTICE:  Storing the ATV in a poorly ven-
tilated room or co
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