1981 Suzuki GS 750 L - Answered Questions & Fixed issues


Hi, Cody wires that get hot or melting are usually caused by a faulty ground and or positive connection.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_Service_Manual_early8valve.pdf
http://mybikemanuals.com/suzuki
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750E_1978_Owners_Manual.pdf
https://www.motorcyclespecs.co.za/model/suzu/suzuki_gs750l%2079.htm
Suzuki GS series

1981 Suzuki GS... | Answered on May 13, 2019 | 17 views


Hi, Ac_dc_dude the vast majority of service, parts fiche, and owners manuals on the internet are "FREE" to download and all service manuals contain wiring diagrams in the back pages. The rest usually charge a modest fee of $15 and there is a handful of obscure, rare, obsolete, and very old models that are no longer or never were available and some were never printed in English. The Indian and Philippine markets are usually in E-book format only, for these rare occasions I shall look on eBay and find the cheapest one available. Most of the manuals will cover your exact make, model, and year otherwise one will be provided that comes as close as possible to your bike and will have most of the same info that an exact manual would have. If there is no $ sign after the manual link it is free to download.
To download your manual for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750E-ES_Shop_Manual_1983.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750EX_Owners_Manual.pdf
https://ridermagazine.com/2013/08/06/retrospective-suzuki-gs750ees-1983
Suzuki GS series

1981 Suzuki GS... | Answered on Apr 01, 2019 | 738 views


Hi, Cringer78 and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Vacuum line from the petcock to intake manifold cracked.
5. Float needle and seat sticking.
6. Float level too low.
7. Carburetor bowl vent line clogged/blocked/pinched.
8. Idle adjusting screw set too low.
9. Air/fuel mixture screw set too lean.
10. Idle port, transfer ports, slow air jet clogged.
11. Slow fuel jet clogged.
12. Faulty fuel pump.
13. Faulty auto choke or wiring connection.
For more information about your issue and valuable "Free" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://advrider.com/f/threads/my-bike-wont-start.461202
1981 GS750 cold start
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 233 views


Hi, Russell for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
1981 Suzuki GS 750 wiring diagram Google Search
Suzuki Motorcycle Wiring Diagrams
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 87 views


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
1981 Suzuki GS 750 vacuum line routing Google Search
Total Motorcycle Forums
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 179 views


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://jalopnik.com/cleaning-carburetors-for-the-first-time-what-the-manua-1717704345
Pulling your 1979 Suzuki GS750L Carbs
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 341 views


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Total Motorcycle Forums
1980 Suzuki GS750 Restoration Project part 18 carb assembly mpg
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 524 views


Hi, Anonymous for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
https://www.louis.eu/rund-ums-motorrad/bike-datenbank/suzuki-gs-750-e/gs750/0133
Fluid change in 1977 GS 750
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 102 views


Hi, Anonymous for the tachometer the usual suspects are:
1. Instrument wiring harness connector corroded.
2. Faulty power or ground wire at the tachometer.
3. Broken, loose or corroded tachometer wire at the coil.
4. Short between the ignition coil and the tachometer.
5. Broken tachometer cable.
6. Faulty tachometer.
For the fuel gauge the usual suspects are:
1. Blown instrument fuse.
2. Faulty sending unit.
3. Faulty wiring between sending unit and gauge.
4. Faulty ground or power connection.
5. Bad fuel gauge.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Suzuki GS1100 tachometer problem
Troubleshooting Gas Gauge Fuel Float carb Suzuki others
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 121 views


Hi, Anonymous engine "BOG" is mainly caused by a rich air and lean fuel condition but it can also be caused by a lean air and rich fuel condition this situation rarely occurs and is only caused by the misinformed weekend warrior that owns a toolbox. If the bike has been sitting for months or years you will have to completely disassemble the carburetor and submerge the parts (except rubber parts) in "Carburetor Dip" It usually comes in a gallon bucket with a wire mesh basket that can be purchased at any automotive store. If it is not the above scenario then the following explanation will apply.
The more you open your throttle the more vacuum you are creating in your carburetor venturi and your intake manifold. When you are operating at higher RPM any unmetered air that leaks into your system can become more obvious.
Unmetered air is air that is getting into your system after the fuel has been delivered. If you have unmetered air getting into your system between the butterfly/slide of the carburetor and the cylinder head this will create a lean condition.
All of the rubber components of the fuel system like vacuum hoses and intake manifold that you mount the carburetor to are made of rubber. If none of these components have been changed they are more than likely highly degraded and probably cracked in places to allow unwanted-unmetered-contaminated air into the combustion chamber. Check all of your vacuum lines and vacuum plugs for carburetor synchronization. The vacuum plugs are in the head just after the rubber intake manifolds. The petcock has a vacuum line as well as part of the emission system.
1. Check the intake manifold for fissures.
2. Ensure the bands used to tighten the manifolds down on the intake are secure and have not bound up the manifold.
3. Make sure air box fittings are not warped and fit completely over the carburetor.
4. For 2 strokes make sure the power valve is adjusted properly.
Your airbox is metering air and is the first step in a process of consuming air and fuel. The system requires the resistance of the air filter in order to get the proper vacuum to "SUCK" the fuel out of the float bowl and create the proper venturi effect.
Improper mounting and sealing of the airbox will create a small lean effect. This might seem like no big deal but you are inviting dust and debris in your engine that is doing slow damage by not having proper fitment. Fix it so you know it's not contributing to your issue. Pick the low-hanging fruit first.
Do not go and start adjusting anything at this point. It ran fine before. There is something wrong with the assembly or a component. Do not adjust your floats. Get it back to where it was. The moment you start tweaking everything is the moment you lose OEM settings which are a must-have for fine-tuning and maximum performance.
Fine-tuning your carburetor and multi carb syncing come at the very end following the proper procedure established by the Carburetor Gods.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
77 GS750 Bogs on throttle
GS 750 Problems Anybody have any ideas
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 49 views


Hi, Ronw63 for this scenario you will need your service manual that has all fastener torque specs and a wiring diagram on the back pages, parts fiche, and owners manual if you can't find the best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
1981 Suzuki GS 750 LX ignition timing Google Search
How To Set Ignition points Suzuki GS550
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_16valve.pdf
https://www.partsfish.com/page/oem-parts-for-suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

1981 Suzuki GS... | Answered on Oct 08, 2018 | 109 views


Hi, Dad before testing any electrical component in the Charging System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead-acid batteries.
1. 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.
2. To check the regulator unplug it from the stator. Take a test light and clip it to the negative terminal of the battery and then touch first one pin and then the other on the plug that goes to the regulator. If you get even the slightest amount of light from the test light the regulator is toast.
To do this with a meter: black lead to battery ground, red lead to each pin on the plug, start with the voltage scale higher than 12vdc and move voltage scale down in steps for each pin. Any voltage is a bad regulator.
3. On the other part of the disconnected regulator plug. Set the multimeter for Ohms x1 scale and measure for resistance across the pins of the stator. You should read something around 0.1 to 0.2 ohms for a 32 amp system.
4. Then check for continuity between each pin on the plug and frame/engine ground. The meter needle should not move (infinite resistance)(digitals will show infinite resistance) if the meter needle does move (indicating continuity)(digitals will show some resistance), recheck very carefully. If the meter still shows continuity to ground the stator is shorted (bad).
5. Set the meter to read A/C volts higher than 30 volts (the scale setting for voltage should always be higher than the highest voltage you expect or you may fry the meter). Start the bike, and measure from one pin to the other on the plug (DO NOT cross the multimeter probes! - touch them to each other). You should read roughly 16-20 vac per 1,000 rpm.
6. If the battery was good under load test, if the stator is NOT shorted to ground, and the stator is putting out A/C voltage, then the regulator is bad (most likely even if passed step 2)
For more information about your question and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
http://www.beginnerbikers.org/showthread.php?26739-1982-Suzuki-GS650-Charging-Issue
HOW TO CHECK YOUR CHARGING SYSTEM and CHANGING the STATOR and REGULATOR...
http://www.classiccycles.org/media//DIR_1653304/DIR_1762756/1b0aa491b60a7ac3ffff848bffffe415.pdf wiring diagram
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750_Service_Manual_early8valve.pdf free service manual
https://www.partsfish.com/page/oem-parts-for-suzuki
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS750T_Owners_Manual.pdf free owners manual

1981 Suzuki GS... | Answered on Sep 09, 2018 | 28 views


it need bigger main jets in the carbs now since it breathes more air in. otherwise youd be a lot better off to find and install the correct airbox. pods aren't all they are made out to be

1981 Suzuki GS... | Answered on Mar 04, 2018 | 28 views


Hi, Jesse before testing any electrical component in the Charging System it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a preliminary reading of 12.5 volts or more but little or zero amperage, the battery is faulty and must be replaced. AGM type batteries fall into this scenario more so than lead acid batteries.
1. Battery Test:
The battery needs to be a fully charged and load tested to ensure proper readings, connections need to be clean and tight. If you are not working with a fully charged and functional battery, all other voltage tests will be incorrect. Standing battery Voltage should be 12.5-13.2 DCV.
2. Charging System Voltage Test:
Start motorcycle, measure DC volts across the battery terminals you should have a reading of approximately 13.2-15 DC Volts.
3. Connections and wires:
Inspect the regulator stator plug, and check the battery terminals for connection corrosion. If everything seems to be in order, move on to number 4 below to determine if there's a failed component.
4. Stator Checks/Rotor Check: Each of the following tests isolates the Stator & Rotor. If AC output and resistance test fail and stator test passes then the rotor is at fault (Pull Primary covers and inspect rotor for damage).
5. AC Output Check:
Unplug the regulator plug from the stator start motorcycle and change Voltmeter to AC volts. Probe both stator wires with your meter lead. The motorcycle should be putting out approximately 18-20 ACV per 1,000 rpm. Reading will vary depending on system, check service manual specification
Generic Specs:
22 amp system produces about 19-26 VAC per 1,000 rpm
32 amp system produces about 16-20 VAC per 1,000 rpm
45 amp system produces about 19-26 VAC per 1,000 rpm
Stator Resistance Check:
Switch your multimeter to Ohm x 1 scale. Probe each stator wires with meter leads and check resistance on the meter.
Resistance should be in the range of 0.1-0.5 Ohms. Reading will vary depending on the system, check the service manual for specifications.
Generic Specs:
22 amp system produces about 0.2 to 0.4 ohms
32 amp system produces about 0.1 to 0.2 ohms
45 amp system produces about 0.1 to 0.2 ohms
5. Stator Ground Check:
Switch your multimeter to Ohm x 1 scale.
Probe each stator wire with your positive lead on the multimeter and the negative to ground.
There should be no continuity to ground on either wire.
If there is continuity your stator is shorted to ground and must be replaced.
6. Regulator Test:
Each of the following tests isolates the regulator only, so if any of these tests fail, the regulator is at fault.
Identifying Wires:
Battery Charge Lead- Wire going from the regulator to battery positive.
AC output leads- Wires coming from the Stator to the regulator.
Ground- Wire from Regulator to ground or regulator may be grounded via the physical bolting to chassis.
Regulator Ground Test: Ensure the regulator body is grounded or grounding wire is fastened tightly to a good ground (you should verify this by checking continuity from the regulator body to chassis ground).
Fwd/Reverse Bias Test/Diode Test:
This check is testing the Diode function to ensure it is regulating the AC current for the stator into DC Current.
Switch multimeter to Diode Scale.
Place your Multimeter positive lead on each AC output wire.
Place your multimeter negative lead on the battery Charge wire.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the AC output wires and the Positive lead on the Battery Charge Wire. The reading should be Infinite. With your meter on the same setting, place your multimeter positive lead on the regulator ground wire or to the regulator directly, and then place your meter negative lead on the AC output leads.
The meter should read voltage typically around .5 volts.
Next, switch your multimeter leads putting the negative lead on the regulator ground and the Positive lead on the AC output wires. The reading should be Infinite.
Note: Below is a table to show the readings:
Positive Lead Negative Lead Reading
AC output 1 Battery charge lead Voltage
AC output 2 Battery Charge Lead Voltage
Battery charge lead AC output 1 ?
Battery charge lead AC output 2 ?
Ground AC output 1 Voltage
Ground AC output 2 Voltage
AC output 1 Ground ?
AC output 2 Ground ?
For more information about your issue and valuable "FREE" downloads for viewing and printing that you will need please click on the blue links below. Good luck and have a wonderful day.
Thread GS850 charging system question
http://racetechelectric.com/files/pdf/rte_troubleshooting_flow_chart.pdf
Suzuki GS850G Service Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gs-owners-manuals

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1981 Suzuki GS... | Answered on Jul 28, 2017 | 501 views


I appreciate that this is only a similar problem but my wife had a similar problem with her old vaxhaul corsa, we got the big guy across the road to help because big guys are usually good with this sort of thing lol, ok he had a great car lots of tools and was always inside his cars engine. He came across half hour later with jump leads and I yelled stop because not just sparks but the cable covers melted and I found it to be a little off. after that we had nothing, no ignition, no lights just nothing and a car mechanic came looked in the engine but couldnt see anything we explained about the battery and on testing it he found that the battery itself first drained as suspected and then we broke it by overloading it somehow in the end a new battery sorted the problem which cost £50 but in the long run we thought it a good price. the battery lasted us another 4 years until the car had had enough and went in for scrap. hope you can take something from that and you can sort your bike :)

1981 Suzuki GS... | Answered on Jul 20, 2017 | 41 views


Hi, Tdmmnice for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Suzuki, despair not, for a mere zero $0 you can download another one. 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.
1981 Suzuki gs650L fuel line routing Google Search
Tank petcock lines to carb Suzuki GS 850 1979
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/GS650GManual.pdf
OEM parts for Suzuki
http://gsarchive.bwringer.com/mtsac/~cliff/storage/gs/1982_Suzuki_GS650G_Owners_Manual.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e


1981 Suzuki GS... | Answered on Mar 29, 2017 | 283 views


0.03-0.08mm for both exh and inlet..

http://www.mtsac.edu/~cliff/storage/gs/GS650GManual.pdf

workshop manual for you also.

good luck

1981 Suzuki GS... | Answered on Mar 12, 2016 | 341 views


Hi, Henry sorry you can't find the first and best tool you ever bought for your Suzuki despair not for a mere $0 you can download another one. For more information about your issue and free downloads that you will need please visit the websites below. Good luck and have a nice day.
Classic Cycles Motorcycle Technical Resources
1981 Suzuki GS 750 wiring diagram free Google Search
http://www.carlsalter.com/download.asp?p=1537

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1981 Suzuki GS... | Answered on Jan 16, 2016 | 84 views


Hi, Henry sorry you can't find the first and best tool you ever bought for your Suzuki despair not for a mere $0 you can download another one. For more information about your issue and free downloads that you will need please visit the websites below. Good luck and have a nice day.
1981 Suzuki GS 750 wiring diagram Google Search
http://members.dslextreme.com/users/storagecliff/images/750e-s-z_wiring.jpg
http://zeus.mtsac.edu/~cliff/storage/gs/GS750_Service_Manual_early8valve.pdf

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1981 Suzuki GS... | Answered on Jan 15, 2016 | 78 views


Hi, William and the usual suspects are:
1. Enrichner system plugged, not properly functioning or improperly operated.
2. Fuel overflow.
3. Restricted fuel supply.
4. Plugged slow jet or passages.
5. Inlet system air leak.
For more information about your issue please visit the websites below. Good luck and have a nice day.
https://www.tradebit.com/filesharing.php/search/0/1981+suzuki+gs+750+l

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

1981 Suzuki GS... | Answered on Nov 12, 2015 | 72 views

Not finding what you are looking for?
1981 Suzuki GS 750 L Logo

167 questions posted

Ask a Question

Usually answered in minutes!

Popular Products

Top Suzuki Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

5954 Answers

ROB

Level 3 Expert

858 Answers

Are you a Suzuki Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...