engine YAMAHA WR 250F 2002 User Guide

YAMAHA WR 250F 2002 User Guide WR 250F 2002 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52338/w960_52338-0.png YAMAHA WR 250F 2002 User Guide

Page 32 of 694

YAMAHA WR 250F 2002 User Guide  
1 - 4
GEN
INFO
 
IMPORTANT INFORMATION 
EC132000 
ALL REPLACEMENT PARTS 
1. We recommend to use Yamaha genuine
parts for all replacements. Use oil and/or
grease recommended by Yamaha for
assembly an

Page 39 of 694

YAMAHA WR 250F 2002 User Guide GEN
INFO
1 - 8
SPECIAL TOOLS
YU-33975, 90890-01403 Steering nut wrench
This tool is used when tighten the steering ring nut to 
specification.YU-33975 90890-01403
YM-1423, 90890-01423 Damper rod holde

Page 50 of 694

YAMAHA WR 250F 2002 User Guide 1 - 10
GEN
INFO
CONTROL FUNCTIONS
EC150000
CONTROL FUNCTIONS
ENGINE STOP SWITCH
The engine stop switch 1 is located on the left
handlebar. Continue pushing the engine stop
switch till the engine comes

Page 52 of 694

YAMAHA WR 250F 2002 User Guide 1 - 11
GEN
INFO
CONTROL FUNCTIONS
DECOMPRESSION LEVER
CAUTION:
Never use the decompression lever after
the engine is started. The engine may be
damaged if you use the decompression
lever while it is r

Page 54 of 694

YAMAHA WR 250F 2002 User Guide 1 - 12
GEN
INFO
CONTROL FUNCTIONS
EC158010
FUEL COCK
The fuel cock supplies fuel from the tank to
carburetor while filtering the fuel. The fuel cock
has the three positions:
OFF:With the lever in this

Page 58 of 694

YAMAHA WR 250F 2002 User Guide 1 - 14
GEN
INFO
FUEL
Always use the recommended fuel as stated
below. Also, be sure to use new gasoline the
day of a race.
CAUTION:
Use only unleaded gasoline. The use of
leaded gasoline will cause se

Page 60 of 694

YAMAHA WR 250F 2002 User Guide 1 - 15
GEN
INFO
STARTING AND BREAK-IN
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

Page 62 of 694

YAMAHA WR 250F 2002 User Guide 1 - 16
GEN
INFO
STARTING AND BREAK-IN
6. Pull the decompression lever to the han-
dlebar and depress the kickstarter crank
10 ~ 20˚.
7. Release the decompression lever and
return the kickstarter cran

Page 64 of 694

YAMAHA WR 250F 2002 User Guide 1 - 17
GEN
INFO
STARTING AND BREAK-IN
STARTING A WARM ENGINE
Do not operate the cold starter knob and throt-
tle. Open the hot starter knob (red) and start
the engine by kicking the kickstarter crank

Page 66 of 694

YAMAHA WR 250F 2002 User Guide 1 - 18
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:   < prev 1-10 11-20 21-30 31-40 41-50 51-60 ... 120 next >