1998-2006 Yamaha F20/F25 Outboards Service Manual, Page 257Get this manual

SHIMMING (EXCEPT FOR USA AND CANADA)
4Calculate: Pinion gear shim thickness (T3)

Pinion gear shim thickness (T3)27 mmP100 mm

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives