3-64 ENGINE • Remove the middle crankcase and measure the width of the compressed plastigauge using the envelope scale. This mea- surement should be taken at the widest part of the com- pressed plastigauge. Balancer shaft journal oil clearance: Standard: 0.028 – 0.052 mm (0.0011 – 0.0020 in) Service Limit: 0.080 mm (0.031 in) • If the oil clearance exceeds the service limit, select the speci- fied bearings from the bearing selection table. • Check the corresponding crankcase journal I.D. code number A, “A” or “B” which is stamped on the rear of upper crank- case. • Check the corresponding balancer shaft journal O.D. code number B, “A” or “B” which is stamped on the balancer shaft. Bearing selection table Balancer shaft journal O.D. B Code AB Crankcase A Green Black I.D. A B Black Brown E Crankcase I.D. specification L Code I.D. specification P A 26.000 – 26.008 mm (1.0236 – 1.0239 in) M B 26.009 – 26.016 mm (1.0240 – 1.0243 in) A S Balancer shaft journal O.D. specification Code O.D. specification A 22.984 – 22.992 mm (0.9049 – 0.9052 in) B 22.976 – 22.984 mm (0.9046 – 0.9049 in) 09900-20205: Micrometer (0 – 25 mm) Bearing thickness specification Color (Part No.) Thickness Green 1.486 – 1.490 mm (12229-40F50-0A0) (0.0585 – 0.0587 in) Black 1.490 – 1.494 mm (12229-40F50-0B0) (0.0587 – 0.0588 in) Brown 1.494 – 1.498 mm (12229-40F50-0C0) (0.0588 – 0.0590 in) NOTE: The balancer shaft journal bearings on upper and middle crank- cases are the same.