Yamaha YW50Z Owner's Manual page 74

CONSUMER INFORMATION
Maintenance
interval
14000 mi
(22000 km) or
1
42 months
16000 mi
2
(25000 km) or
48 months
3
18000 mi
(28000 km) or
54 months
4
20000 mi
(31000 km) or
5
60 months
6
7
8
9
Date of
Mileage
service
Servicing dealer
name and address
9-74 9-6
EAU26343
Remarks