9
2.6 Maintenance standards
Part Item Standard(mm) Service limit
Engine Maximum speed without load 5500±100 rpm —
Cylinder Sleeve I.D.
1.712-1.714 in 1.716 in
43.500-43.520 mm 43.595 mm
Piston
Skirt O.D
1.711-1.712 in 1.707 in
43.460-43.480 mm 43.350 mm
Pin bore I.D.
0.3937-0.3940 in 0.3955 in
10.002-10.008 mm 10.050 mm
Piston pin O.D
0.3934-0.3937 in 0.3920 in
9.994-10.000 mm 9.950 mm
Piston ring
1st ring
Height
0.030-0.031 in 0.028 in
0.77-0.79 mm 070 mm
Ring side clearance
0.0008-0.0024 in 0.0059 in
0.02-0.06 mm 0.15 mm
Ring end clearance
0.0039-0.0098 in 0.0314
0.10-0.25 mm 0.80 mm
Width
0.063-0.071 in 0.055 in
1.60-1.80 mm 1.40 mm
2nd ring
Height
0.038-0.039 in 0.0354 in
0.97-0.99 mm 0.90 mm
Ring side clearance
0.0008-0.0024 in 0.0059 in
0.02-0.06 mm 0.15 mm
Ring end clearance
0.0039-0.0098 in 0.0314
0.10-0.25 mm 0.80 mm
Width
0.071-0.078 in 0.063 in
1.80-2.00 mm 1.60 mm
Oil ring
Height
0.053-0.058 in 0.049 in
1.35-1.48 mm 1.25mm
Ring side clearance
0.0008-0.0067 in 0.0090 in
0.02-0.17 mm 0.23 mm
Ring end clearance
0.0079-0.1180 in 0.0354 in
0.20-0.30 mm 0.90 mm
Width
0.3942-0.3946 in 0.3965 in
2.00-2.40 mm 1.80 mm
Connecting
rod
Small end I.D
0.3942-0.3946 in 0.3965 in
10.012-10.024 mm 10.070 mm
Big end I.D
0.5911-0.5915 in 0.5937 in
15.015-15.025 mm 15.080 mm
Crankshaft Crank pin O.D.
0.5896-0.5899 in 0.5866 in
14.975-14.985 mm 14.900 mm
Valves
Valve
clearance
Intake
0.0031-0.0039 in ---
0.08-0.10 mm ---
Exhaust
0.0039-0.0059 in ---
0.10-0.15 ---
Stem O.D. Intake 0.156-0.157 in 0.1535 in