2012 YAMAHA YZ250F engine

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Page 6 of 198

YAMAHA YZ250F 2012  Owners Manual FOREWORD
INTRODUCTION
Congratulations on your purchase of 
a Yamaha YZ series. This model is 
the culmination of Yamahas vast ex-
perience in the production of paceset-
ting racing machines. It repre

Page 7 of 198

YAMAHA YZ250F 2012  Owners Manual HOW TO USE THIS MANUAL
FINDING THE REQUIRED PAGE
1. This manual consists of seven 
chapters; "General Information", 
"Specifications", "Regular inspec-
tion and adjustments", "Engine", 
"Chassis", "El

Page 8 of 198

YAMAHA YZ250F 2012  Owners Manual HOW TO READ DESCRIPTIONS
To help identify parts and clarify pro-
cedure steps, there are exploded dia-
grams at the start of each removal 
and disassembly section.
1. An easy-to-see exploded diagram

Page 9 of 198

YAMAHA YZ250F 2012  Owners Manual TABLE OF CONTENTS
GENERAL INFORMATION1
SPECIFICATIONS2
REGULAR INSPECTION AND 
ADJUSTMENTS
3
ENGINE4
CHASSIS5
ELECTRICAL6
TUNING7

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YAMAHA YZ250F 2012  Owners Manual CONTENTS
CHAPTER 1

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YAMAHA YZ250F 2012  Owners Manual 1-5
DESCRIPTION
DESCRIPTION
• The machine you have purchased may differ slightly from those shown in the following.
• Designs and specifications are subject to change without notice.
1. Clutch lev

Page 16 of 198

YAMAHA YZ250F 2012  Owners Manual 1-6
CONSUMER INFORMATION
CONSUMER INFORMATION
There are two significant reasons for 
knowing the serial number of your 
machine:
1. When ordering parts, you can 
give the number to your Yamaha 
dealer

Page 22 of 198

YAMAHA YZ250F 2012  Owners Manual 1-12
CONTROL FUNCTIONS
CONTROL FUNCTIONS
ENGINE STOP SWITCH
The engine stop switch "1" is located 
on the left handlebar. Continue push-
ing the engine stop switch till the en-
gine comes to a stop.
C
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