Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 28Get this manual
Functional Limit Clean to removeClean to remove55.06mm (2.1677in) Replace if over specified limit Action To Be Taken
0.06mm (0.0024in) 0.06mm (0.0024in) 54.90mm (2.1614in) 0.150mm (0.00591in)
Replace if severely damaged on the piston sliding surface, which cannot be repaired with sand paper of No400 to 600, or if damaged over specified limit
Replace if under specified limitReplace if over specified limitClean to removeCorrect if possible (with #400 to 600 water proof sand paper), or replace