YAMAHA YZ250F 2010 Repair Manual

YAMAHA YZ250F 2010 Repair Manual YZ250F 2010 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/53945/w960_53945-0.png YAMAHA YZ250F 2010 Repair Manual
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Page 61 of 196

YAMAHA YZ250F 2010 Repair Manual 3-11
ENGINE
b. Turn the throttle stop screw "1" until the specified engine idling 
speed.
Using a digital engine tachometer for 
idle speed adjustment, detect the en-
gine idling speed by bringing the

Page 62 of 196

YAMAHA YZ250F 2010 Repair Manual 3-12
ENGINE
c. Select the proper pad using the pad selecting table.
The thickness "a" of each pad is indi-
cated in hundredths of millimeters on 
the pad upper surface.
d. Round off the last digit of

Page 63 of 196

YAMAHA YZ250F 2010 Repair Manual 3-13
ENGINE
INTAKE
EXHAUST
120 125 130 135 140 145 150 155 160 165 170175 180 185 190 195 200 205 210 215 220 225 230 235 240
0.00 - 0.01
0.02 - 0.06
0.07 - 0.11
0.12 - 0.17
0.18 - 0.22
0.23 - 0.27
0.

Page 64 of 196

YAMAHA YZ250F 2010 Repair Manual 3-14
CHASSIS
CHASSIS
BLEEDING THE HYDRAULIC 
BRAKE SYSTEM
Bleed the brake system if:
• The system has been disassem-bled.
• A brake hose has been loosened  or removed.
• The brake fluid is very

Page 65 of 196

YAMAHA YZ250F 2010 Repair Manual 3-15
CHASSIS
CHECKING AND REPLACING THE 
FRONT BRAKE PADS
1. Inspect:• Brake pad thickness "a"Out of specification →Replace as 
a set.
2. Replace: • Brake pad
Brake pad replacement steps:
a. Rem

Page 66 of 196

YAMAHA YZ250F 2010 Repair Manual 3-16
CHASSIS
2. Replace:• Brake pad
Brake pad replacement steps:
a. Remove the protector "1" and pad  pin plug "2".
b. Loosen the pad pin "3".
c. Remove the rear wheel "4" and  brake caliper "5".
Re

Page 67 of 196

YAMAHA YZ250F 2010 Repair Manual 3-17
CHASSIS
CHECKING THE SPROCKET
1. Inspect:• Sprocket teeth "a"Excessive wear →Replace.
Replace the drive sprocket, rear 
wheel sprocket and drive chain as a 
set.
CHECKING THE DRIVE CHAIN
1. M

Page 68 of 196

YAMAHA YZ250F 2010 Repair Manual 3-18
CHASSIS
A. Right
B. Left
Turn the adjuster so that the drive 
chain is in line with the sprocket, as 
viewed from the rear.
d. Tighten the axle nut while pushing down the drive chain.
e. Tighten

Page 69 of 196

YAMAHA YZ250F 2010 Repair Manual 3-19
CHASSIS
ADJUSTING THE FRONT FORK 
COMPRESSION DAMPING FORCE
2. Adjust:• Compression damping force
By turning the adjuster "1".
• STANDARD POSITION: This is the position which is back 
by the

Page 70 of 196

YAMAHA YZ250F 2010 Repair Manual 3-20
CHASSIS
• STANDARD POSITION:This is the position which is back 
by the specific number of clicks 
from the fully turned-in position. 
(Which align the punch mark "a" 
on the adjuster with the p
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