Page 15 - 2019 SHOP MANUAL CRF1000/A/D

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GENERAL INFORMATION
CRANKCASE/TRANSMISSION/BALANCER SPECIFICATIONS (CRF1000D)
Unit: mm (in)
ITEM STANDARD SERVICE LIMIT
Transmission Gear I.D. M5 35.000 – 35.025 (1.3780 – 1.3789) –
M6 43.000 – 43.025 (1.6929 – 1.6939) –
C1 35.000 – 35.025 (1.3780 – 1.3789) –
C2 25.000 – 25.021 (0.9843 – 0.9851) –
C3, C4 33.000 – 33.025 (1.2992 – 1.3002) –
Gear bushing O.D. M5 34.950 – 34.975 (1.3760 – 1.3770) –
M6 42.950 – 42.975 (1.6909 – 1.6919) –
C1 34.950 – 34.975 (1.3760 – 1.3770) –
C2 24.959 – 24.980 (0.9826 – 0.9835) –
C3, C4 32.950 – 32.975 (1.2972 – 1.2982) –
Gear bushing I.D. M5 32.000 – 32.025 (1.2598 – 1.2608) –
M6 40.007 – 40.028 (1.5751 – 1.5759) –
C1 30.000 – 30.021 (1.1811 – 1.2067) –
C2 21.985 – 22.006 (0.8655 – 0.8664) –
Inner mainshaft O.D. M5 31.957 – 31.970 (1.2581 – 1.2587) –
Outer mainshaft O.D. M6 39.975 – 39.991 (1.5738 – 1.5744) –
Countershaft O.D. C1 29.967 – 29.980 (1.1798 – 1.1803) –
C2 21.987 – 22.000 (0.8656 – 0.8661) –
Shift fork I.D. 12.000 – 12.018 (0.4724– 0.4731) –
Claw thickness 5.93 – 6.00 (0.233 – 0.236) 5.83 (0.230)
Shaft O.D. 11.957 – 11.968 (0.4707 – 0.4712) –

CRANKSHAFT/PISTON/CYLINDER SPECIFICATIONS

Unit: mm (in)
ITEM STANDARD SERVICE LIMIT
Crankshaft Connecting rod side clearance 0.10 – 0.20 (0.004 – 0.008) 0.35 (0.014)
Runout – 0.05 (0.002)
Main journal bearing oil clearance 0.019 – 0.038 (0.0007 – 0.0015) 0.05 (0.002)
Crankpin bearing oil clearance 0.027 – 0.045 (0.0011 – 0.0018) 0.065 (0.0026)
Cylinder I.D. 92.000 – 92.015 (3.6220 – 3.6226) 92.10 (3.626)
Piston, Piston O.D. at 12 mm (0.5 in) from 91.981 – 91.996 (3.6213 – 3.6218) 91.89 (3.618)
pis-ton pin, bottom
piston ring Piston pin hole I.D. 22.002 – 22.008 (0.8662 – 0.8665) 22.02 (0.867)
Piston pin O.D. 21.994 – 22.000 (0.8659 – 0.8661) 21.98 (0.865)
Piston ring end gap Top 0.15 – 0.30 (0.006 – 0.012) 0.40 (0.016)
Second 0.45 – 0.60 (0.018 – 0.024) 0.70 (0.028)
Oil (side rail) 0.20 – 0.70 (0.008 – 0.028) 0.90 (0.035)
Piston ring-to-ring Top 0.030 – 0.060 (0.0012 – 0.0024) –
groove clearance Second 0.030 – 0.060 (0.0012 – 0.0024) –
Connecting rod small end I.D. 22.030 – 22.044 (0.8673 – 0.8679) 22.054 (0.8683)

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