Yamaha F250B Owner's Manual page 90

Maintenance
Single engine
3
1. Isolator lead with circuit protection
2. Red cable
3. Black cable
4. Fuse
5. Battery for accessories
6. Battery for starting
7. Negative connecting cable
84
2 1
4
6 5
7
ZMU05939
Twin engines
4 3
6
7
1. Starboard side engine
2. Port side engine
3. Red cable
4. Black cable
5. Isolator leads with circuit protection
6. Fuse
7. Battery for starting
8. Battery for accessories
9. Negative connecting cable
1 2
5
4
8
9
ZMU05941
3
7