torque YAMAHA WR 450F 2009 Owners Manual

YAMAHA WR 450F 2009 Owners Manual WR 450F 2009 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52473/w960_52473-0.png YAMAHA WR 450F 2009 Owners Manual

Page 10 of 226

YAMAHA WR 450F 2009  Owners Manual CONTENTS
CHAPTER 1
GENERAL INFOR-
MATION
DESCRIPTION ................. 1-1
MACHINE 
IDENTIFICATION ............. 1-2
INCLUDED PARTS .......... 1-2
IMPORTANT 
INFORMATION................. 1-2
CHECKING

Page 25 of 226

YAMAHA WR 450F 2009  Owners Manual 1-15
STARTING AND BREAK-IN
The engine fails to start
Pull the hot starter lever all the way 
out and while holding the lever, kick 
the kickstarter crank 10 to 20 times to 
clear the engine. Then, res

Page 26 of 226

YAMAHA WR 450F 2009  Owners Manual 1-16
TORQUE-CHECK POINTS
TORQUE-CHECK POINTS
Concerning the tightening torque, refer to "TIGHTENING TORQUES" section in the CHAPTER 2.
Frame construction Frame to rear frame
Combined seat and fuel tan

Page 39 of 226

YAMAHA WR 450F 2009  Owners Manual 2-12
TIGHTENING TORQUES
TIGHTENING TORQUES
ENGINE
△- marked portion shall be checked for torque tightening after break-in or before each race.
*1: Tighten the cylinder head bolts to 30 Nm (3.0 m•k

Page 40 of 226

YAMAHA WR 450F 2009  Owners Manual 2-13
TIGHTENING TORQUES
Radiator pipe 1, 2 M10 × 1.0 2 10 1.0 7.2
Impeller M8 × 1.25 1 14 1.4 10
Water pump housing cover M6 × 1.0 3 10 1.0 7.2
Coolant drain bolt M6 × 1.0 1 10 1.0 7.2
Oil pump co

Page 41 of 226

YAMAHA WR 450F 2009  Owners Manual 2-14
TIGHTENING TORQUES
CHASSIS
△- marked portion shall be checked for torque tightening after break-in or before each race.
Part to be tightened Thread size QtyTightening torque
Nm m•kg ft•lb

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YAMAHA WR 450F 2009  Owners Manual 2-15
TIGHTENING TORQUES
△Driven sprocket and wheel hub  M8 × 1.25 6 50 5.0 36
△Nipple (spoke) — 72 3 0.3 2.2
△Disc cover and rear brake caliper M6 × 1.0 2 10 1.0 7.2
△Protector and rear br

Page 43 of 226

YAMAHA WR 450F 2009  Owners Manual 2-16
TIGHTENING TORQUES
1. First, tighten the steering ring nut approximately 38 Nm (3.8 m•kg, 27 ft•lb) by using the steering nut wrench, then loosen 
the steering ring nut one turn.
2. Retighten

Page 44 of 226

YAMAHA WR 450F 2009  Owners Manual 2-17
TIGHTENING TORQUES
GENERAL TORQUE 
SPECIFICATIONS
This chart specifies torque for stan-
dard fasteners with standard I.S.O. 
pitch threads. Torque specifications 
for special components or assem-

Page 82 of 226

YAMAHA WR 450F 2009  Owners Manual 3-27
CHASSIS
4. Adjust:
• Steering ring nut
Steering ring nut adjustment 
steps:
a. Remove the headlight.
b. Remove the handlebar and upper 
bracket.
c. Loosen the steering ring nut "1" 
using the s
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