Honda NHX110 User Manual

GENERAL INFORMATION
1-7
CYLINDER HEAD/VALVES SPECIFICATIONS
Unit: mm (in)
CYLINDER/PISTON SPECIFICATIONS
Unit: mm (in)
ITEM STANDARD SERVICE LIMIT
Cylinder compression 1,098 kPa (11.2 kgf/cm
2
, 159 psi)
at 550 rpm
–
Cylinder head warpage – 0.05 (0.002)
Rocker arm Rocker arm I.D. IN/EX 10.000 – 10.015 (0.3937 – 0.3943) 10.10 (0.398)
Rocker arm shaft O.D. IN/EX 9.972 – 9.987 (0.3926 – 0.3932) 9.91 (0.390)
Arm-to-shaft clearance IN/EX 0.013 – 0.043 (0.0005 – 0.0017) 0.08 (0.003)
Camshaft Cam lobe height IN 32.542 – 32.782(1.2812 – 1.2906) 32.52 (1.280)
EX 32.263 – 32.503 (1.2702 – 1.2796) 32.24 (1.269)
Valve, valve
guide
Valve clearance IN 0.16 ± 0.02 (0.006 ± 0.001) –
EX 0.25 ± 0.02 (0.010 ± 0.001) –
Valve stem O.D. IN 4.975– 4.990 (0.1959 – 0.1965) 4.90 (0.193)
EX 4.955 – 4.970 (0.1951 – 0.1957) 4.90 (0.193)
Valve guide I.D. IN/EX 5.000 – 5.012 (0.1969 – 0.1973) 5.03 (0.198)
Stem-to-guide
clearance
IN 0.010 – 0.037 (0.0004 – 0.0015) 0.08 (0.003)
EX 0.030 – 0.057 (0.0012 – 0.0022) 0.10 (0.004)
Valve guide projection
above cylinder head
IN/EX 9.1 – 9.3 (0.36 – 0.37) –
Valve seat width IN/EX 0.90 – 1.10 (0.035 – 0.043) 1.5 (0.06)
Valve spring free
length
IN/EX Outer 38.33 (1.509) 37.04 (1.458)
Inner 31.53 (1.241) 30.66 (1.207)
ITEM STANDARD SERVICE LIMIT
Cylinder I.D. 50.000 – 50.010 (1.9685 – 1.9689) 50.10 (1.972)
Out-of-round – 0.05 (0.002)
Taper – 0.05 (0.002)
Warpage – 0.05 (0.002)
Piston,
piston
ring,
piston pin
Piston O.D. 49.970 – 49.990 (1.9673 – 1.9681) 49.95 (1.967)
Piston O.D. measurement point 10 (0.4) from bottom of skirt –
Piston pin bore I.D. 13.002 – 13.008 (0.5119 – 0.5121) 13.04 (0.513)
Piston pin O.D. 12.994 – 13.000 (0.5116 – 0.5118) 12.96 (0.510)
Piston-to-piston pin clearance 0.002 – 0.014 (0.0001 – 0.0006) 0.02 (0.001)
Piston ring-to-ring
groove clearance
Top 0.015 – 0.045 (0.0006 – 0.0018) 0.08 (0.003)
Second 0.015 – 0.045 (0.0006 – 0.0018) 0.08 (0.003)
Piston ring end gap Top 0.10 – 0.25 (0.004 – 0.010) 0.45 (0.018)
Second 0.10 – 0.25 (0.004 – 0.010) 0.45 (0.018)
Oil (side rail) 0.20 – 0.70 (0.008 – 0.028) –
Cylinder-to-piston clearance 0.010 – 0.040 (0.0004 – 0.0016) 0.09 (0.004)
Connecting rod small end I.D. 13.010 – 13.028 (0.5122 – 0.5129) 13.05 (0.514)
Connecting rod-to-piston pin clearance 0.010 – 0.034 (0.0004 – 0.0013) 0.05 (0.002)
Stud bolt projection above crankcase 177.5 – 178.5 (6.99 – 7.03) –

Honda NHX110 Specifications

General

Brand	Honda
Model	NHX110
Category	Scooter
Language	English