Yamaha YZF-R7 User Manual

ENGINE SPECIFICATIONS
SPEC
2 - 5
Timing chain
Model/number of links DID219FTH3/100 ----
Tensioning system Automatic ----
Valves, valve seats, valve guides
Valve clearance (cold)
Intake 0.20 ~ 0.25 mm (0.0079 ~ 0.0098 in) ----
Exhaust 0.25 ~ 0.30 mm (0.0098 ~ 0.0118 in) ----
Valve dimensions
Valve head diameter A
Intake 22.1 ~ 22.3 mm (0.8701 ~ 0.8780 in) ----
Exhaust 23.4 ~ 23.6 mm (0.9213 ~ 0.9291 in) ----
Valve face width B
Intake 0.54 ~ 1.57 mm (0.0213 ~ 0.0618 in) ----
Exhaust 0.88 ~ 1.87 mm (0.0346 ~ 0.0736 in) ----
Valve seat width C
Intake 0.7 ~ 0.9 mm (0.028 ~ 0.035 in) ----
Exhaust 0.7 ~ 0.9 mm (0.028 ~ 0.035 in) ----
Valve margin thickness D
Intake 0.9 ~ 1.2 mm (0.028 ~ 0.047 in) ----
Exhaust 1.0 ~ 1.3 mm (0.039 ~ 0.051 in) ----
Valve stem diameter
Intake 3.983 ~ 3.995 mm (0.1568 ~ 0.1573 in) 3.953 mm
(0.1556 in)
Exhaust 3.978 ~ 3.990 mm (0.1566 ~ 0.1571 in) 3.948 mm
(0.1544 in)
Valve guide inside diameter
Intake 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in) 4.05 mm
(0.1594 in)
Exhaust 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in) 4.05 mm
(0.1594 in)
Valve stem-to-valve guide clear-
ance
Intake 0.005 ~ 0.029 mm (0.0002 ~ 0.0011 in) 0.06 mm
(0.0024 in)
Exhaust 0.010 ~ 0.034 mm (0.0004 ~ 0.0013 in) 0.07 mm
(0.0028 in)
Item Standard Limit
Head Diameter
B
Face Width
C
Seat Width
D
Margin Thickness
A

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