2005 YAMAHA YZ450F radiator

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Page 22 of 646

YAMAHA YZ450F 2005  Owners Manual CHAPTER 4
ENGINE
SEAT, FUEL TANK 
AND SIDE COVERS ..................................4-1
EXHAUST PIPE AND SILENCER .............4-3
RADIATOR ................................................4-5
CARBURET

Page 26 of 646

YAMAHA YZ450F 2005  Owners Manual GEN
INFO
1 - 1
DESCRIPTION
EC100000
GENERAL INFORMATION
EC110000
DESCRIPTION
1Clutch lever
2Hot starter lever
3Front brake lever
4Throttle grip
5Radiator cap
6Fuel tank cap
7“ENGINE STOP” button
8

Page 38 of 646

YAMAHA YZ450F 2005  Owners Manual GEN
INFO
1 - 7
SPECIAL TOOLS
EC140001
SPECIAL TOOLS
The proper special tools are necessary for complete and accurate tune-up and assembly. Using the
correct special tool will help prevent damage cause

Page 80 of 646

YAMAHA YZ450F 2005  Owners Manual SPEC
2 - 9 Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance “A”0.12 mm or less 
(0.0047 in or less)0.20 mm 
(0.008 in)
Tip clearance “B”0.09 ~

Page 82 of 646

YAMAHA YZ450F 2005  Owners Manual SPEC
2 - 11 Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Spark plug M10S × 1.0 1 13 1.3 9.4
Camshaft cap M6 × 1.0 10 10 1.0 7.2
Cylinder head blind plug screw M12 × 1.0

Page 87 of 646

YAMAHA YZ450F 2005  Owners Manual SPEC
2 - 16
NOTE:
- marked portion shall be checked for torque tightening after break-in or before each race.Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Rear wheel axle an

Page 130 of 646

YAMAHA YZ450F 2005  Owners Manual 2 - 21
SPECCABLE ROUTING DIAGRAM
EC240000
CABLE ROUTING DIAGRAM
1Fuel tank breather hose
2Oil tank breather hose
3Hot starter cable
4Radiator hose 4
5Clutch cable
6Cylinder head breather hose
7Radiato

Page 132 of 646

YAMAHA YZ450F 2005  Owners Manual 2 - 22
SPECCABLE ROUTING DIAGRAM
ÎFasten the “ENGINE STOP” but-
ton lead and sub wire harness to
the frame at the protecting tube
for the “ENGINE STOP” button
lead with a plastic locking tie
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