Honda BF135A, BF150A Outboard Motors Shop Manual., Page 506Get this manual
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BF135ABF150A bFORWARD BEVEL GEAR SHIM
[2] Calculation value +0.10 (+0.004)
+0.05 (+0.002)
0.45 (0.018) 0.40 (0.016) 0.35 (0.014) 0.30 (0.012) 0.25 (0.010) 0.20 (0.008)<