Yamaha 25BMH 30HMH Factory Service Manual, Page 152Get this manual
GENERAL
CHECKING BOLTS AND NUTS
Check: Power unit mount bolt Flywheel nut Loose boltsnuts Tighten to the specified torquePower unit mount bolt 1st: 11 (1.1 kgf m, 8.1 ft lb) 2nd: 22 (2.2 kgf m, 16 ft lb) Flywheel nut 140 (14 kgf m, 103 ft lb)