Yamaha 40 Owner's Manual page 53

Item
Water pump
Oil pump
Oil tank water drain
Spark plug(s)
Actions
Inspection / replace-
ment
Inspection / adjustment
Inspection / cleaning
Cleaning / adjustment /
replacement
Initial
50 hours
10 hours
(3
(1 month)
months)
Maintenance
Every
100 200
hours (6 hours (1
months) year)
48