TOHATSU MFS25 Service Manual page 80

Maintenance
6. Check that cooling water check port discharges water, and
run engine for 3 to 5 minutes at low speed.
7. Stop engine and stop water supply, remove flushing
attachment 4, remove tape, attach and tighten water plug
5, and then, install propeller.
Remove tape after flushing with water.
Water Plug :
12 N·m ( 9 lb·ft ) [ 1.2 kgf·m ]
3-32 25/30 2006