Yamaha YZF-R7 User Manual

ENGINE SPECIFICATIONS
SPEC
2 - 6
Valve stem runout ---- 0.01 mm
(0.0004 in)
Valve seat width
Intake 0.9 ~ 1.1 mm (0.035 ~ 0.043 in) 1.6 mm
(0.06 in)
Exhaust 0.9 ~ 1.1 mm (0.035 ~ 0.043 in) 1.6 mm
(0.06 in)
Valve springs
Inner spring
Free length
Intake 32.35 mm (1.27 in) 30.73 mm
(1.21 in)
Exhaust 28.82 mm (1.13 in) 27.37 mm
(1.08 in)
Installed length (valve closed)
Intake 27.96 mm (1.10 in) ----
Exhaust 24.6 mm (0.97 in) ----
Compressed spring force
(installed)
Intake 101 ~ 117 N
(10.30 ~ 11.93 kgf, 22.7 ~ 26.3 lb)
----
Exhaust 106 ~ 122 N
(10.81 ~ 12.44 kgf, 23.8 ~ 27.4 lb)
----
Spring tilt
Intake ---- 2.5˚ /1.4 mm
(2.5˚/0.055 in)
Exhaust ---- 2.5˚ /1.3 mm
(2.5˚/0.051 in)
Winding direction (top view)
Intake Counter clockwise ----
Exhaust Counter clockwise ----
Item Standard Limit

Yamaha YZF-R7 Specifications

General

Bore x Stroke	80.0mm x 68.6mm
Compression Ratio	11.5:1
Fuel Delivery	Fuel injection
Final Drive	Chain
Front Brakes	Dual 298mm hydraulic disc; ABS
Rear Brakes	245mm hydraulic disc; ABS
Front Tire	120/70ZR17
Rear Tire	180/55ZR17
Wheelbase	54.9 in
Seat Height	32.9 in
Fuel Capacity	3.4 gal
Wet Weight	414 lb
Ground Clearance	5.3 in
Engine Type	Liquid-cooled, 4-stroke, DOHC, 4-valves
Transmission	6-speed
Front Suspension	41mm KYB inverted fork, adjustable preload, rebound and compression damping; 5.1-in travel
Rear Suspension	Single shock, adjustable preload and rebound damping; 5.1-in travel