Honda BF20A-BF25A, BF25D-BF30D Outboard Motors Shop Manual., Page 148Get this manual
HONDA Reverse gear shim selection table
Unit: mm (in)Calculation value +0.15-0.00 mrn (+0.006-0.000 in) 0.15-0.10 (0.0060.0041
I- Calculation value
0.00- -0.15 mm (0.000- -0.006 mf 0.05 0.00 (0.0020.0001 0.45 10.018)
0.10-0.05 (0,0040.002) 0.40 10.0161
0.00- -0.05 (0.000- 0.002) 0.50 10.0201
-0.05- -0.10 (-0.002- 0.004) 0.55 10.022)
-0.100.15 (-0.004- 0.0061 0.60 (0.0241
0.35 10.014)
Refer to page 12-17 for information on how read the shim selection table and shim combination
[PROPELLER SHAFT HOLDER
131GEAR CASE I41 ENGAGEMENT
Without using the special tool Cross reference the engagement mark of the propeller shaft holder and the engagement mark located on the bottom water screen installation section of the gear case, and select the shim of the appropriate thickness from the shim selection table