2015 YAMAHA YZ250F diagram

EAS1SM5006
HOW TO USE THIS MANUAL
In this manual, descriptions of installation, removal, disassembly, assembly, check, and adjustment
procedures are laid out with the individual steps in sequential order.
• The manual is divided into chapters and each chapter is divided into sections. The current section
title “1” is shown at the top of each page.
• Sub-section titles “2” appear in smaller print than the section title.
• To help identify parts and clarify procedure steps, there are exploded diagrams “3” at the start of
each removal and disassembly section.
• Numbers “4” are given in the order of the jobs in the exploded diagram. A number indicates a re-
moval or a disassembly step.
• Symbols “5” indicate parts to be lubricated or replaced.
Refer to “SYMBOLS”.
• A job instruction chart “6” accompanies the exploded diagram, providing the order of jobs, the
names of parts, the notes in jobs, etc.
• Jobs “7” requiring more information (such as special tools and technical data) are described se-
quentially.
1
7 3 4
6
2
5

2
SPECIFICATIONS
GENERAL SPECIFICATIONS......................................................................... 2-1
ENGINE SPECIFICATIONS............................................................................. 2-2
CHASSIS SPECIFICATIONS........................................................................... 2-8
ELECTRICAL SPECIFICATIONS.................................................................. 2-11
TIGHTENING TORQUES............................................................................... 2-12
GENERAL TIGHTENING TORQUE SPECIFICATIONS .......................... 2-12
ENGINE TIGHTENING TORQUES .......................................................... 2-13
CHASSIS TIGHTENING TORQUES ........................................................ 2-16
LUBRICATION POINTS AND LUBRICANT TYPES..................................... 2-19
ENGINE .................................................................................................... 2-19
CHASSIS .................................................................................................. 2-21
LUBRICATION SYSTEM CHART AND DIAGRAMS..................................... 2-23
LUBRICATION DIAGRAMS ..................................................................... 2-23
CABLE ROUTING DIAGRAM........................................................................ 2-31

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-23
EAS1SM5063
LUBRICATION SYSTEM CHART AND DIAGRAMS
EAS1SM5064LUBRICATION DIAGRAMS

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-24
1. Intake camshaft
2. Exhaust camshaft
3. Piston
4. Oil nozzle
5. Oil filter element
6. Oil pump
7. Oil strainer
8. Crankshaft
9. Drive axle
10. Main axle

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-25

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-26
1. Connecting rod
2. Crankshaft
3. Main axle
4. Oil strainer
5. Drive axle

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-27

LUBRICATION SYSTEM CHART AND DIAGRAMS
2-28
1. Exhaust camshaft
2. Intake camshaft
3. Oil filter element
4. Oil pump