dimensions YAMAHA YZF-R7 1999 Owners Manual

GENERAL SPECIFICATIONS
SPEC

2 - 1
SPECIFICATIONS
GENERAL SPECIFICATIONS
Item Standard Limit
Dimensions
Overall length 2,060 mm (81.1 in) ----
Overall width 720 mm (28.3 in) ----
Overall height 1,125 mm (44.3 in) ----
Seat height 840 mm (33.1 in) ----
Wheelbase 1,400 mm (55.1 in) ----
Minimum ground clearance 120 mm (4.72 in) ----
Minimum turning radius 3,800 mm (150 in) ----
Weight
Wet (with oil and a full fuel tank) 207 kg (456 lb) ----
Dry (without oil and fuel) 176 kg (388 lb) ----
Maximum load (total of rider and
accessories) 317 kg (699 lb) ----
2

ENGINE SPECIFICATIONS
SPEC

2 - 4
Camshafts
Drive system Chain drive (right) ----
Camshaft cap inside diameter 24.500 ~ 24.521 mm
(0.9646 ~ 0.9654 in)----
Camshaft journal diameter 24.452 ~ 24.465 mm
(0.9627 ~ 0.9632 in)----
Camshaft journal-to-camshaft cap
clearance0.035 ~ 0.069 mm (0.0014 ~ 0.0027 in) ----
Intake camshaft lobe dimensions
Measurement A 33.36 ~ 33.46 mm (1.3134 ~ 1.3173 in) 33.31 mm
(1.3114 in)
Measurement B 24.95 ~ 25.05 mm (0.9823 ~ 0.9862 in) 24.90 mm
(0.9803 in)
Measurement C 8.31 ~ 8.51 mm (0.3272 ~ 0.3350 in) ----
Exhaust camshaft lobe dimen-
sions
Measurement A 33.00 ~ 33.10 mm (1.2992 ~ 1.3031 in) 32.95 mm
(1.2972 in)
Measurement B 24.986 ~ 25.086 mm
(0.9837 ~ 0.9876 in)24.936 mm
(0.9817 in)
Measurement C 7.95 ~ 8.15 mm (0.3130 ~ 0.3209 in) ----
Maximum camshaft runout ---- 0.03 mm
(0.0012 in) Item Standard Limit
C
A
B
C
A
B

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 WidthC
Seat Width
D
Margin ThicknessA

ENGINE SPECIFICATIONS
SPEC

2 - 8
Pistons
Piston-to-cylinder clearance 0.028 ~ 0.054 mm (0.0011 ~ 0.0021 in) 0.1 mm
(0.004 in)
Diameter D 71.954 ~ 71.972 mm
(2.8328 ~ 2.8335 in)----
Height H 10 mm (0.39 in) ----
Piston pin bore (in the piston)
Diameter 17.004 ~ 17.015 mm
(0.6694 ~ 0.6699 in)17.045 mm
(0.6711 in)
Offset 0 mm (0 in) ----
Piston pins
Outside diameter 16.995 ~ 17.000 mm
(0.6691 ~ 0.6693 in)16.975 mm
(0.6683 in)
Piston pin-to-piston pin bore
clearance0.004 ~ 0.020 mm
(0.00016 ~ 0.00079 in)0.070 mm
(0.0028 in)
Piston rings
Top ring

Ring type Barrel ----
Dimensions (B

´

T) 0.8
´
2.7 mm (0.031
´
0.106 in) ----
End gap (installed) 0.15 ~ 0.25 mm (0.006 ~ 0.010 in) 0.50 mm
(0.020 in)
Ring side clearance 0.03 ~ 0.07 mm (0.0012 ~ 0.0028 in) 0.12 mm
(0.0047 in)
2nd ring
Ring type Taper ----
Dimensions (B

´

T) 0.8
´
2.8 mm (0.031
´
0.110 in) ----
End gap (installed) 0.25 ~ 0.35 mm (0.009 ~ 0.014 in) 0.70 mm
(0.028 in)
Ring side clearance 0.02 ~ 0.06 mm (0.0008 ~ 0.0024 in) 0.12 mm
(0.0047 in) Item Standard Limit
H
D
T
B
B
T

ENGINE SPECIFICATIONS
SPEC

2 - 9
Oil ring
Dimensions (B

´

T) 1.5
´
2.5 mm (0.059
´
0.098 in) ----
End gap (installed) 0.1 ~ 0.3 mm (0.004 ~ 0.012 in) ----
Connecting rods
Crankshaft pin-to-big end bearing
clearance0.058 ~ 0.078 mm (0.0023 ~ 0.0031 in) ----
Bearing color code 2 = Blue, 3·4 = Black, 5·6 = Brown,
7·8 = Green, 9 = Yellow----
Crankshaft
Width A 54.4 ~ 56.0 mm (2.142 ~ 2.205 in) ----
Width B 292.8 ~ 294.0 mm (11.53 ~ 11.57 in) ----
Maximum runout C 0.035 mm
(0.0014 in)
Big end side clearance D 0.16 ~ 0.26 mm (0.006 ~ 0.010 in) ----
Crankshaft journal-to-crankshaft
journal bearing clearance0.036 ~ 0.056 mm (0.0014 ~ 0.0022 in) ----
Bearing color code1·2 = Blue, 3·4 = Black, 5·6 = Brown, 7·8 =
Green, 9·10 = Yellow, 11 = Violet----
Clutch
Clutch type Wet, multiple disc ----
Clutch release method Hydraulic inner push ----
Operation Left-hand operation ----
Recommended fluid Brake fluid DOT4 ----
Friction plates #1
Thickness 2.9 ~ 3.1 mm (0.114 ~ 0.122 in) 2.8 mm
(0.110 in)
Plate quantity 8 ----
Friction plate #2
Thickness 3.7 ~ 3.9 mm (0.146 ~ 0.154 in) 3.6 mm
(0.142 in)
Plate quantity 1 ----Item Standard Limit
B
T
D
FCCC
A
B
E

4 - 12
ENGCAMSHAFTS
EB401401
CHECKING THE CAMSHAFTS
1. Check:
• camshaft lobes
Blue discoloration/pitting/scratches ®
Replace the camshaft.
2. Measure:
• camshaft lobe dimensions a and b
Out of specification ® Replace the
camshaft.
Camshaft lobe dimensions
limit
Intake camshaft
a 33.31 mm (1.3114 in)
b 24.90 mm (0.9803 in)
Exhaust camshaft
a 32.95 mm (1.2972 in)
b 24.936 mm (0.9817 in)
3. Measure:
• camshaft runout
Out of specification ® Replace.
Maximum camshaft runout
0.03 mm (0.0012 in)
4. Measure:
• camshaft journal-to-camshaft cap
clearance
Out of specification ® Measure the
camshaft journal diameter.
Camshaft journal-to-camshaft
cap clearance
0.035 ~ 0.069 mm
(0.0014 ~ 0.0027 in)