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SPEC
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
Item
Cylinder head
Warpage limit
Cylinder
Bore size
Wear limit
Taper limit
Out-of-round limit
Piston
Piston diameter (D)
Measuring point (H)
Piston-to-cylinder clearance
Wear limit
Piston pin boss bore
Piston pin
Outside diameter
Piston rings
Top ring
Dimension B
Dimension T
End gap
Side clearance
2nd ring
Dimension B
Dimension T
End gap
Side clearance
Reed valve
Valve stopper height
Valve vending limit
Connecting rod
Small end inside diameter
Big end inside diameter
Crankshaft
Crank width
Runout limit
Big end side clearance (E)
Maximum small end axial play (F)
Unit
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
mm (in)
(A)
mm (in)
(B)
mm (in)
(D)
mm (in)
mm (in)
mm (in)
2-3
Model
9.9C
0.10 (0.0039)
56.000–56.020 (2.2047-2.2055)
56.1 (2.21)
0.08 (0.0032)
0.05 (0.0020)
55.940–55.985 (2.2024–2.2041)
10.0 (0.39)
0.035–0.040 (0.0014–0.0016)
0.09
14.004–14.015 (0.5513–0.5518)
13.996–14.000 (0.5510–0.5512)
Keystone
1.98–2.00 (0.0780–0.0787)
2.40–2.60 (0.0945–0.1024)
0.15–0.35 (0.0059–0.0138)
0.02–0.06 (0.0008–0.0024)
Barrel
1.96–1.98 (0.0772–0.0780)
2.40–2.60 (0.0945–0.1024)
0.15–0.35 (0.0059–0.0138)
0.04–0.08 (0.0016–0.0032)
0.6–0.7 (0.02–0.03)
0.200 (0.0079)
18.000–18.011 (0.7087–0.7091)
28.039–28.052 (1.1039–1.1044)
46.90–46.95 (1.85–1.85)
25.90–26.10 (1.02–1.03)
0.03 (0.0012)
0.300–0.800 (0.0118–0.0315)
2.0 (0.08)
15C
5.9–6.1 (0.23–0.24)
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