82 Suzuki GS650 Engine turns over but gets no fire to start.

I would suspect two things ... thing one ... are you sure the '82 has a safety interlock switch? Thing two ... if it does have a switch, check it for proper operation.

Hi , start by putting the byke on its central stand or other device, in order to get rear wheel on the air
engage on 4th or 5th gear and try turn the engine by turning the wheel (better without sparkplugs)
if it turns ok without noticeble strange noises, then put the sparkplug back and try ( ask a friend for help) to push it dow the road in 2nd gear
at this point i'm assuming that everything else has been checked (petrol, spark oil level,etc)
good luck,

the filiments in the light bulbs may be broken and shorting accross the marker and turn signals. replace light bulbs.

One will be for the battery venting (connects to the vent connection on the battery), another will be a vent tube for the fuel tank. Any others may be vent tubes for the crankcase.

when you turn the key the button should slide back then lift

I to have just acquired a 1982 GS550L. I live in Smithville and Clares in Fonthill are a Suzuki dealer . Ive already bought and ordered parts from them . They have been very helpfull so far. As far as the service manual goes I ordered mine from Indigo for around $35.00 with shipping.

Wave washer on the face of the clutch basket may have lost its tension, clutch friction plates may be wearing thin as she's an old girl. Some automotive (car) oils not specifically designed for wet clutches when used in a bike will cause the clutch to slip as they are designed to leave a deposit on friction areas. This will require a thorough flush and a few oil changes in quick succession.
Check the return function of the clutch release arm on the crankcase, they can bunch up the rubber shroud and not return fully. Good luck and Cheers.

Ok got it, you have a worn or bent shift fork and worn gear cogs transmission work needed to fix this problem. If you decide to have it repaired make sure to inspect all the gears and forks.
Good luck.

do you have manual or auto. cam tensioner sounds like the problem

better check for the ignition coil for proper sparking or igniting of current in the comprssion chamber, check the ignition coil spark plug wire, check the spark plug, check for proper fuel supply in the flow system to Carbs, check for Ignition timing of the bike, or still you cant solve or still worried then dont worry better take the bike to nearest aurhorised Suzuki service centre for better assistance on this problem surely the problem will be solved.