Serial number plate on the right side of the tractor frame, above the front axle
2002
1228
2003
1486
2004
1908
2005
2363
2006
3178
2007
3986
ELECTRICAL
Ground
negative
Charging system
alternator
Charging amps
65
Battery CCA
925
Battery volts
12
About John Deere Tractor
The 6603 tractor is part of the John Deere's 6003 Series. The 6603 is a Utility Tractors type, that is used mostly in Agriculture Tractors. A engine powers the 6603 tractor. This setup boosts real-world efficiency.