Small Engines (Lawn Mowers, etc.): wiring harness diagram & elec parts, electrical info, authorized repair service

Question
Needinfo regarding above subject.  I was given a Troybilt lawn tractor (Model 13CU609H603,SN 1C042H20326}. The basic machine seems to be in fair shape, but the electrical system appears to have been badly butchered.The mfg seems to want to keep electrical systems a secret as I can find absolutly no info on the net. A visit to the local authorized repair service proved usless as they were also unable to come up with any electrical info. Any helpful information would be greatly appreciated.

Answer
Looked everywhere, parts diagram, owerner's manual...nothing on the schematic.

The best link I know of is:

http://www4.briggsandstratton.com/miscpdfs/RNT/alternator_replacement.pdf

It should be helpful but you will have to trace each wire by hand and firgure for wire colors.

Eric