Honda WT30XK4, Руководство пользователя

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SERVICE INFORMATION
2-2
SERVICE INFORMATION
MAINTENANCE STANDARDS
WT30XK4
Unit: mm (in)
Part Item Standard Service limit
Engine Maximum speed (at no load)
3,850 ± 150 min
-1
(rpm)
–
Idle speed
1,400 ± 150 min
-1
(rpm)
–
Cylinder compression
0.50 -0.70 MPa (5.1- 7.1 kgf/cm
2
,
73 - 101 psi) / 600 min
-1
(rpm)
–
Cylinder head Warpage – 0.10 (0.004)
Cylinder Sleeve I.D. 77.000 – 77.017 (3.0315 – 3.0322) 77.17 (3.038)
Piston Skirt O.D. 76.975 – 76.985 (3.0305 – 3.0309) 76.85 (3.026)
Piston-to-cylinder clearance 0.015 – 0.042 (0.0006 – 0.0017) 0.12 (0.005)
Piston pin bore I.D. 18.002 – 18.008 (0.7087 – 0.7090) 18.042 (0.7103)
Piston pin Pin O.D. 17.994 – 18.000 (0.7084 – 0.7087) 17.950 (0.7067)
Piston pin-to-piston pin bore
clearance 0.002 – 0.014 (0.0001 – 0.0006) 0.08 (0.003)
Piston rings Ring side clearance Top 0.030 – 0.060 (0.0012 – 0.0024) 0.15 (0.006)
Second 0.030 – 0.060 (0.0012 – 0.0024) 0.15 (0.006)
Ring end gap Top 0.200 – 0.350 (0.0079 – 0.0138) 1.0 (0.04)
Second 0.350 – 0.500 (0.0138 – 0.0197) 1.0 (0.04)
Oil (side rail) 0.2 – 0.7 (0.01 – 0.03) 1.0 (0.04)
Ring width Top 1.160 – 1.175 (0.0457 – 0.0463) 1.140 (0.0449)
Second 1.160 – 1.175 (0.0457 – 0.0463) 1.140 (0.0449)
Connecting
rod Small end I.D. 18.005 – 18.020 (0.7089 – 0.7094) 18.07 (0.711)
Big end side clearance 0.1 – 0.4 (0.004 – 0.016) 1.0 (0.04)
Big end I.D. 33.025 – 33.039 (1.3002 – 1.3007) 33.07 (1.302)
Big end oil clearance 0.040 – 0.064 (0.0016 – 0.0025) 0.12 (0.005)
Crankshaft Crank pin O.D. 32.975 – 32.985 (1.2982 – 1.2986) 32.92 (1.296)
Crankshaft runout – 0.1 (0.004)
Cylinder barrel Camshaft bearing I.D. 16.000 – 16.018 (0.6299 – 0.6306) 16.05 (0.632)
Crankcase
cover Camshaft bearing I.D. 16.000 – 16.018 (0.6299 – 0.6306) 16.05 (0.632)
Valves Valve clearance IN 0.15 ± 0.02 (0.006 ± 0.001) –
EX 0.20 ± 0.02 (0.008 ± 0.001) –
Valve stem O.D. IN 6.575 – 6.590 (0.2589 – 0.2594) 6.44 (0.254)
EX 6.535 – 6.550 (0.2573 – 0.2579) 6.40 (0.252)
Valve guide I.D. IN/EX 6.600 – 6.615 (0.2598 – 0.2604) 6.66 (0.262)
Guide-to-stem
clearance IN 0.010 – 0.040 (0.0004 – 0.0016) 0.11 (0.004)
EX 0.050 – 0.080 (0.0020 – 0.0032) 0.13 (0.005)
Valve seat width 1.0 – 1.2 (0.04 – 0.05) 2.0 (0.08)
Valve spring free length 39.0 (1.54) 37.5 (1.48)
Valve spring perpendicularity – 1.5° max.
Camshaft Cam height IN 31.895 – 32.195 (1.2557 – 1.2675) 31.795 (1.2518)
EX 31.616 – 31.916 (1.2447 – 1.2565) 31.516 (1.2408)
Camshaft O.D. Cam side 15.966 – 15.984 (0.6286 – 0.6293) 15.92 (0.627)
Gear side 15.954 – 15.984 (0.6281 – 0.6293) 15.92 (0.627)
Carburetor Main jet #88 –
Pilot screw opening 2 turns out –
Float height 13.2 (0.52) –
Spark plug Gap 0.7 – 0.8 (0.028 – 0.031) –
Ignition coil Air gap 0.2 – 0.6 (0.01 – 0.02) –
Pump impeller Clearance 0.4 – 0.8 (0.016 – 0.031) –
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