1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 253Get this manual
Quality of the image is intentionally reduced!
SHIMMING (FOR USA AND CANADA)
Shimming Y8-39799
If the original shim(s) is unavailable, start with 1.2 mm shim4 Measure: Specified measurement (M) Out of specification -7 Adjust