2011 YAMAHA YZ250F oil

[x] Cancel search: oil

Page 55 of 196

YAMAHA YZ250F 2011  Owners Manual 3-5
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good operating condition.
Be

Page 56 of 196

YAMAHA YZ250F 2011  Owners Manual 3-6
ENGINE
ENGINE
CHECKING THE COOLANT LEVEL
Do not remove the radiator cap 
"1", drain bolt and hoses when the 
engine and radiator are hot. Scald-
ing hot fluid and steam may be 
blown out under pre

Page 58 of 196

YAMAHA YZ250F 2011  Owners Manual 3-8
ENGINE
2. Adjust:
• Throttle grip free play
Throttle grip free play adjustment 
steps:
a. Slide the adjuster cover.
b. Loosen the locknut "1".
c. Turn the adjuster "2" until the 
specified free

Page 59 of 196

YAMAHA YZ250F 2011  Owners Manual 3-9
ENGINE
6. Apply:
• Lithium soap base grease 
On the matching surface "a" on air 
filter element.
7. Install:
• Air filter element "1"
• Washer
• Fitting bolt
Align the projection "a" on fi

Page 60 of 196

YAMAHA YZ250F 2011  Owners Manual 3-10
ENGINE
Replacement steps:
a. Remove the oil filter element cov-
er "1" and oil filter element "2".
b. Check the O-rings "3", if cracked 
or damaged, replace them with a 
new one.
c. Install the o

Page 61 of 196

YAMAHA YZ250F 2011  Owners 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 th

Page 62 of 196

YAMAHA YZ250F 2011  Owners 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 67 of 196

YAMAHA YZ250F 2011  Owners 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.