2005 YAMAHA WR 250F open

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Page 6 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) IMPORTANT NOTICE
THIS MACHINE IS DESIGNED
STRICTLY FOR COMPETITION
USE, ONLY ON A CLOSED
COURSE. It is illegal for this machine
to be operated on any public street,
road, or highway. Off-road use on
p

Page 56 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 1 - 31
GEN
INFO
FUEL COCK
The fuel cock supplies fuel from the
tank to carburetor and also filters the
fuel. The fuel cock has three posi-
tions:
OFF: With the lever in this position,
fuel will not fl

Page 62 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 1 - 37
GEN
INFO
STARTING AND 
BREAK-IN
WARNING
Never start or run the engine in a
closed area. The exhaust fumes
are poisonous; they can cause
loss of consciousness and death
in a very short time. Alw

Page 64 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 1 - 39
GEN
INFO
1. Inspect the coolant level.
2. Turn the fuel cock to “ON”.
3. Push on the main switch to “ON”.
4. Shift the transmission into neu-
tral.
5. Fully open the cold starter knob
1

Page 66 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 1 - 41
GEN
INFO
STARTING A WARM ENGINE
Do not operate the cold starter knob
and throttle. Pull the hot starter lever
1 and start the engine by pushing
the start switch or by kicking the kick-
starter

Page 68 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 1 - 43
GEN
INFO
BREAK-IN PROCEDURES
1. Before starting the engine, fill the
fuel tank with the fuel.
2. Perform the pre-operation
checks on the machine.
3. Start and warm up the engine.
Check the idle

Page 88 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) MAINTENANCE SPECIFICATIONS
2 - 9
SPEC
Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less 
(0.0047 in or less)0.20 mm 
(0.008 in)
Side cl

Page 218 of 864

YAMAHA WR 250F 2005  Betriebsanleitungen (in German) 3 - 27
INSP
ADJ
12. Install:
Coolant reservoir cap
13. Start the engine and let it warm
up for several minutes.
14. Turn off the engine and inspect
the coolant level.
Refer to “COOLANT LEVEL
INSPEC
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