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6. MAINTENANCE STANDARDS
• ENGINE
Parts
Item
Standard
Service limit
Engine
Engine speed
Eco-Throttle OFF
3,300 ± 100 min
–1
(rpm)
—
Eco-Throttle ON
2,400 ± 100 min
–1
(rpm)
—
Cylinder compression
0.59 – 0.83
[MPa (kgf/cm
2
,psi) at 600 min
–1
(rpm)]
(6.0 – 8.5, 86 – 120)
—
Cylinder
Cylinder I.D.
88.00 (3.465)
88.17 (3.471)
Cylinder head
Warpage
—
0.10 (0.004)
Valve seat width
1.1 (0.04)
2.0 (0.08)
Piston
Skirt O.D.
87.985 (3.4640)
87.850 (3.4587)
Piston-to-cylinder clearance
0.015 – 0.052 (0.0006 – 0.0020)
0.120 (0.0047)
Piston pin bore I.D.
20.002 – 20.008 (0.7875 – 0.7877)
20.042 (0.7891)
Piston pin
Pin O.D.
19.994 – 20.00 (0.7872 – 0.7874)
19.950 (0.7854)
Piston-to-piston pin bore clearance
0.002 – 0.014 (0.0001 – 0.0006)
0.08 (0.003)
Piston rings
Ring side clearance
Top/second
0.030 – 0.060 (0.0012 – 0.0024)
0.15 (0.006)
Ring end gap
Top/second
0.2 – 0.4 (0.008 – 0.016)
1.0 (0.04)
Oil
0.2 – 0.7 (0.008 – 0.028)
1.0 (0.04)
Ring width
Top/second
2.0 (0.08)
1.75 (0.069)
Connecting
Small end I.D.
20.005 – 20.020 (0.7876 – 0.7882)
20.07 (0.790)
rod
Big end I.D.
36.025 – 36.039 (1.4183 – 1.4189)
36.07 (1.420)
Big end oil clearance
0.040 – 0.066 (0.0016 – 0.0026)
0.12 (0.005)
Big end side clearance
0.1 – 0.7 (0.004 – 0.028)
1.0 (0.04)
Crankshaft
Crank pin O.D.
35.975 – 35.985 (1.4163 – 1.4167)
35.93 (1.415)
Valves
Valve clearance
IN
0.15 ± 0.02 (0.006 ± 0.001)
—
EX
0.20 ± 0.02 (0.008 ± 0.001)
—
Stem O.D.
IN
6.575 – 6.590 (0.2589 – 0.2594)
6.44 (0.2535)
EX
6.535 – 6.550 (0.2573 – 0.2579)
6.40 (0.2520)
Valve guides
Guide I.D.
IN/EX
6.600 – 6.615 (0.2598 – 0.2604)
6.66 (0.2622)
Guide-to-stem
IN
0.010 – 0.040 (0.0004 – 0.0016)
0.11 (0.004)
clearance
EX
0.050 – 0.080 (0.0020 – 0.0031)
0.13 (0.005)
Valve springs
Free length
39.0 (1.54)
37.5 (1.48)
Camshaft
Cam height
IN
32.40 – 32.80 (1.276 – 1.291)
32.25 (1.270)
EX
31.89 – 32.29 (1.256 – 1.271)
31.75 (1.250)
Camshaft O.D.
15.966 – 15.984 (0.6286 – 0.6293)
15.920 (0.6268)
Crankcase
Camshaft holder I.D.
16.000 – 16.018 (0.6299 – 0.6306)
16.05 (0.6319)
cover
Carburetor
Main jet
#98
—
Float height
13.2 (0.52)
—
Pilot screw opening
2 turns out
—
Unit: mm (in)
cap.02 EU65is 6500is (Eu).qxd 07.12.17 4:25 PM ページ2-4