I too, have a short drive to and from work, and purchased an 86 Spree for $300. New tires, full tank of gas and oil, just needed a new battery and a seat cover. And 3119 miles on the odometer, & all plastic intact.
Got the battery on Friday, ran great until today- now only putting out 4.5 volts. Turn signals were working until just a bit ago as well. No headlight functuion- can't figure out if it's the bulb or an entire sealed beam I have to replace. And this site is a Godsend to us backporch spannermonkeys!
As for the engine, I got it going about 5 to 7 mph yesterday- little girls on bikes with training wheels were passing me!

Now I can it this old scooter going over 20, almost to25! But I can't get the twist grip to really control the engine. This thing wants to go fast!
One problem I found was that the wires to the auto bystarter were broken- apparently ripped apart by the kickstarter lever. A pain to put back together- but after some soldering in a small piece to the gap in the yellow wire, and reconnecting the green, I think my repair job works well.
Judging from the operation- the battery must not be charging as yesterday it was at the full 12 volts, and the turn signals and horn worked. Now, with the battery worn down- none of the electrical lighting things work....I never could get the light on the speedometer panel to function.
Any suggestions? I am seriously considering the Noiseguy Speed Muffler!
Doc