2001-2002 Yamaha 50HP F50Z/T50Z Ouboard 4-stroke engines service manual, Page 92Get this manual
Lower unit General
S62Y3620
S62Y3650
Check the specific gravity of the electrolyteFully charge the battery if out of specification
S62Y3630
[6] FT50C only [ill EHD, ED models [g EHT, ET models [Q] F50F50A only