Originally Posted by Iron_HawK_Customs
I have started a new friendship with a 1981 Suzuki GS 450L I received for free.
Ooh the nightmares are returning!
I bought a GS450SX new in March 1982.
The voltage regulator/rectifier units in Suzukis from that period are very prone to failure - I went through 3 in a few short years and Suzuki refused to honour their own new bike warranty. Understandably, I have never owned anything else Suzuki.
The common fix by the late 1980s was to replace the rectifier/regulator with one from a Honda CB250/400N or a Yamaha RD/RZ 250/350LC. Check the alternator stator; the regulator takes the stator and often the battery too.
The cam chain tensioner on those was a disaster. The modern GS500 has a different arrangement which might be better.
All in all, my only ever brand new vehicle purchase wasn't a very happy experience.