Yamaha YZ450F 2021 User Manual

THROTTLE BODY
7-4
EAM20141
THROTTLE BODY
Removing the throttle body
Order Job/Parts to remove Q’ty Remarks
Seat/Air filter case cover
Refer to “GENERAL CHASSIS” on page
4-1.
Side cover (left/right)
Refer to “GENERAL CHASSIS” on page
4-1.
Air scoop (left/right)
Refer to “GENERAL CHASSIS” on page
4-1.
Fuel tank Refer to “FUEL TANK” on page 7-1.
1ECU 1
2 Ignition coil 1
3 Intake air temperature sensor coupler 1 Disconnect.
4 Air filter case 1
5 Fuel injector coupler 1 Disconnect.
6 Intake air pressure sensor coupler 1 Disconnect.
7 Throttle position sensor coupler 1 Disconnect.
8Cover 1
9 Throttle cable cover 1
3
2
1
7 N・m (0.7 kgf・m, 5.2 lb・ft)
3.8 N・m (0.38 kgf・m, 2.8 lb・ft)
7 N・m (0.7 kgf・m, 5.2 lb・ft) 7 N・m (0.7 kgf・m, 5.2 lb・ft)
8 N・m (0.8 kgf・m, 5.9 lb・ft)
(2)
(2)
(2)
9
5
7
10 N・m (1.0 kgf・m, 7.4 lb・ft)
3.0 N・m (0.30 kgf・m, 2.2 lb・ft)
4.0 N・m (0.40 kgf・m, 3.0 lb・ft)
3.0 N・m (0.30 kgf・m, 2.2 lb・ft)
3.5 N・m (0.35 kgf・m, 2.6 lb・ft)
6
8
4

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