11.8 Technical data R 850 C R 1200 C Bucket-type tappet Extl. dia. mm (in) Bore dia. in cylinder head mm (in) Radial clearance mm (in) Wear limit mm (in) 23.947...23.960 (0.9428...0.9433) 24.000...24.021 (0.9449...0.9457) 0.040...0.074 (0.0016...0.0029) 0.18 (0.007) Auxiliary shaft Bore dia. in crankcase front/back mm (in) Auxiliary shaft dia.
front/back mm (in) Radial clearance mm (in) Wear limit mm (in) 25.020...25.041 (0.9851...0.9859) 24.959...24.980 (0.9827...0.9835) 0.040...0.082 (0.0016...0.0032) 0.17 (0.007) Crankshaft Marking of main bearing and crankpin on front crank web no paint mark paint mark Grinding stage 0 Grinding stage 1 (-0.25 mm/-0.010 in) Grrinding stage 0 (grinding stage 1 = —0.25 mm/—0.010 in) Guide bearing bore dia. mm (in) Guide bearing dia. mm (in) Main bearing journal dia. mm (in) Radial clearance mm (in) Wear limit mm (in) 64.949...64.969 (2.5571...2.5579) Green: 59.964...60.003 (2.3609...2.3624) Yellow: 59.974...60.013 (2.3612...2.3628) Green: 59.939...59.948 (2.3598...2.3602) Yellow:
59.949...59.958 (2.3602...2.3606) 0.016...0.064 (0.0006...0.0025) 0.1 (0.004) Main bearing bore dia. mm (in) Main bearing dia. mm (in) Main bearing journal dia. mm (in) Radial clearance mm (in) Wear limit mm (in) 60.000...60.019 (2.3622...2.3629) Green: 54.998...55.039 (2.1653...2.1669) Yellow: 55.008...55.049 (2.1657...2.1673) Green: 54.971...54.980 (2.1643...2.1646) Yellow:
54.981...54.990 (2.1646...2.1650) 0.018...0.068 (0.0007...0.0028) 0.13 (0.0051) Width of guide bearing mm (in) Bearing width of main bearing journal mm (in) Axial play mm (in) Wear limit mm (in) 24.890...24.940 (0.9799...0.9819) 25.020...25.053 (0.9851...0.9864) 0.080...0.163 (0.0031...0.0064) 0.2 (0.008) Grinding stage 0 (grinding stage 1 = –0.25 mm/—0.010 in) Crankpin dia. mm (in) 47.975...47.991 (1.8888...1.8894) Bearing width of crankpin mm (in) 22.065...22.195 (0.8687...0.8738)