Yamaha YZ450F 2021 User Manual

STEERING HEAD
4-55
EAM20101
STEERING HEAD
Removing the lower bracket
Order Job/Parts to remove Q’ty Remarks
Refer to “CHECKING AND ADJUSTING
THE STEERING HEAD” on page 3-27.
Use a maintenance stand to raise the front
wheel off the ground.
Number plate
Refer to “GENERAL CHASSIS” on page
4-1.
Handlebar Refer to “HANDLEBAR” on page 4-35.
1 Front fender 1
2 Steering stem nut 1
3 Front fork leg 2 Refer to “FRONT FORK” on page 4-42.
4 Upper bracket 1
5 Steering ring nut 1
6 Lower bracket 1
7 Bearing race cover 1
8 Upper bearing 1
9 Bearing race 2
10 Lower bearing 1
2
4
5
7
3
1
6
8
10
9
LS
LS
LS
21 N・m (2.1 kgf・m, 15 lb・ft)
21 N・m (2.1 kgf・m, 15 lb・ft)
9 N・m (0.9 kgf・m, 6.6 lb・ft)
10 N・m (1.0 kgf・m, 7.4 lb・ft)
1st
2nd
38 N・m (3.8 kgf・m, 28 lb・ft)
145 N・m (14.5 kgf・m, 107 lb・ft)
(4)
(4)
(4)
7 N・m (0.7 kgf・m, 5.2 lb・ft)

Yamaha YZ450F 2021 Specifications

General

Bore x Stroke	97.0mm x 60.8mm
Compression Ratio	13.0:1
Ignition	TCI: Transistor Controlled Ignition
Transmission	5-speed
Final Drive	Chain
Suspension Rear	KYB® single shock; fully adjustable, 12.5-in travel
Brakes Front	Hydraulic single disc brake, 270mm
Length	85.6 in
Width	32.5 in
Seat Height	38.2 in
Wheelbase	58.5 in
Ground Clearance	13.0 in
Fuel Capacity	1.6 gal
Wet Weight	245 lb
Engine Type	449cc liquid-cooled DOHC 4-stroke; 4 valves
Fuel Delivery	fuel injection
Suspension Front	KYB® Speed-Sensitive System, inverted fork; fully adjustable, 12.2-in travel
Brakes Rear	Hydraulic disc, 240mm
Tires Front	80/100-21
Tires Rear	120/80-19