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1982 Suzuki GS550L eletrical problem

I have a 1982 Suzuki GS550L with a 1 year old battery and a brand new stator. If I leave the battery on the charger overnight the bike runs fine and the blinkers work fine, but sometimes the left blinker will quit flashing and the battery will drain power to the point where it wont even turn the engine over after I shut it off. I can push start it at this point and leave it running but the stator wont recharge the battery after doing this a couple times there isnt even enough power left in the battery to push start it.. Any Ideas?

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I am having a similar problem with my 1981 GS550L . Been looking through the GS forums and they say that the connections are noted for becoming dirty and not connecting properly . They say to clean ALL connections . And most of the folks seem to agree with replacing the R/R (which I think stands for rectifier / regulator ) with a compu-fire series based controller .

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Voltage regulater needs replacing

Posted on Jul 25, 2013


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1982 Suzuki Gs 550 L will not start when hot

Hi, Zach and the usual suspects are:
1. Fuel tank empty.
2. The fuel tank has old dead gas.
3. Fuel tank bottom contaminated with ethanol sludge, dirt, water, rust, etc.
4. Fuel supply valve/petcock turned off.
5. Fouled spark plugs.
6. Engine flooded as a result of overuse of the enrichner.
7. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
8. Fuel valve/petcock or filter clogged.
9. Fuel line to carburetor or throttle body pinched, kinked or blocked.
10. Carburetor float stuck.
11. Fuel injectors clogged.
12. Fuel injectors stuck open.
13. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced, AGM batteries fail in this scenario more so than lead acid batteries.
14. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
15. Loose or corroded wire connection at the coil or plug between ignition sensor and ECM module.
16. Spark plug cables in bad condition and shorting check for spark leakage in the dark, cable connections loose, or connected to the wrong cylinders.
17. Ignition timing incorrect due to a faulty ignition coil, ignition module or MAP, CMP, CKP, O2, TPS, ETP, IAC sensors.
18. Faulty neutral, clutch lever, or kickstand safety switch.
19. Faulty fuel pump or fuse or relay.
20. A stuck bent or burnt valve.
21. Tilt sensor needs a reset.
22. Security system not disarming alarm needs a reset.
23. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Thread 1980 GS550L won start when hot
What Do Check When My Motorcycle Won Start Honda Shadow Forums Shadow... very comprehensive
Suzuki GS550 Service Manual
OEM parts for Suzuki

Jun 17, 2017 | 1982 Suzuki Gs 550 L

1 Answer

I just bought a 1982 GS550L Suzuki. It seems like a float in one of my carbs is stuck; the gas spills over and the engine randomly revs when it sits and idols. I tried to take the carburetor off to clean...

There is no special trick for easily removing these carbs from your GS550L, though it helps if you did well in high school geometry--you can use that knowledge to help you figure out how to angle the rack of carbs to get them in and out of the frame. The basic steps of the procedure are very simple: remove the throttle cables (can't remember if this bike as a single or dual cable system), loosen the clamps holding the carbs to the flexible collars connecting them to the motor and to the air box, and then wiggle the carbs free. Sounds easy, right?

Your first problem will be getting the carbs free from the rubber collars in which they've been mounted for years--possibly since 1982. They'll be glued in place, but you should be able to get them free--one at a time--with some judicious force. Because there's not a lot of wiggle room in there, you'll probably want to remove the air box and battery so that you have a bit more working room. Even then, prepare to leave some skin on exposed frame welds. My experience has been that it's somewhat easier to pull the carbs back away from the motor and then disconnect them from the air box, if you weren't already able to disconnect them when you pulled the air box to create more working room. The carbs are mounted in a rack. Once they're free, you should be able to angle them slightly and pull them out of the bike frame.
Believe it or not, it may be harder to get the carbs back in place than it was getting them out. If you have the money, you might want to consider getting a fresh set of rubber collars to connect the carbs to the motor. The old collars will be stiff, hard, and likely to crack when you try to set the carbs back into them. If you get new intake collars, you might be able to fit them onto the carbs before you slide the rack back into place; you'll then just bolt the new rubber to the motor. Or, if the mounting bolts will be inaccessible, go ahead and mount the collars to the motor first. I have found that lubricating the rubber with some soapy water or KY jelly will help the carbs slip into place a lot easier. Both of these lubricants will naturally dry, and they won't damage the rubber parts, either.

Good luck with your project!

May 17, 2011 | 1982 Suzuki Gs 550 L

1 Answer

Have a 1981 gs1100L keep burning out stators 1 a year for the last 2 years runs like new just keeps burning stators

Make sure the stator is grounded to the motor , the motor is properly grounded to the frame, and the battery negative cable is also properly grounded. Some times an easily overlooked thing like a proper ground can cause major problems.

May 01, 2011 | Suzuki GS 750 L Motorcycles

1 Answer

Need to check out and possibly replace rectifier on 1982 Suzuki GS 1100L My battery is not charging.

It's much more likely that its the stator although they do do the odd regulator as well.
Start at the stator first as it is easier to test.
Disconect the stator wires-sometimes behind the front sprocket cover-sometimes further up the wiring loom.
Using a multimeter check for resistance between the yellow wires (3x) comming from the stator cover. Check that none of these wires has conunuity(connection) to earth.
If any/all do you have a burnt out stator- remove the stator cover & inspect- the windings will look burnt & smell bad also.

If the stator tests fine then the reg is most likely the problem.

Hope this helps-
Regards Andrew

Jul 18, 2010 | Suzuki GS 750 L Motorcycles

1 Answer

Just acquired an '82 Suzuki GS550L and would like to know of the closest servicing available for it - I am in Niagara on the Lake I would also like to acquire a manual for it...........thanks Kaspar Pold

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.

Jun 23, 2010 | 1982 Suzuki Gs 550 L

1 Answer

I need spect for cab settings on a 82 suzuki gs550l..

For each carb, turn the air screw and the throttle screw inward until they LIGHTLY seat. Now open each of them one and one half turns. This is the factory setting. If the adjusting screws are seated too tight, the jet will leave a ring indention on the adjuster screw. The ring is not a good thing and will affect performance. Please rate my answer.


Feb 23, 2010 | 1982 Suzuki Gs 550 L

1 Answer


The neutral safety switch is out of adjustment. Most bike won't start unless it is in Neutral or the clutch lever pulled in. Get a new battery and charge it up full. The intake boots need to be replaced or it will run lean. That is why you need to chock it to get it to run.

Oct 18, 2009 | 1982 Suzuki Gs 550 L

1 Answer

Proper start-up service for a 1980 Suzuki GS550L motorcycle.

Shoot WD40 into each cylinder to get them wet.
Change gearbox oil and oil filter. Use 10w40 motor oil in the gear box. Don't use any synthetic oils, oil marked "EC", or oil with "special" additives. Stick with the major brands; Pennzoil, Quaker State, Mobil or Shell. How bad is the rust inside the gas tank? I would consider a liquid tank liner if rusted. Google “ kreem fuel tank liner “ or go to www.
  • Lube chain or get a new chain (if needed)
  • Lube Throttle, clutch and front brake cables
  • Lube Speedometer cable
  • Grease the swingarm, axle and steering stem bearings.
  • Install a new battery
  • Clean, and balance the carbs. This will be the problem area. They will likely be gummed up pretty good. Be sure to install an in-line fuel filter before starting the bike.

Jun 11, 2009 | 1980 Suzuki Gs 550 L

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