20 Most Recent 1990 Suzuki GSX 750 F (Katana) Questions & Answers


Hi, Rickmelende 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.
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1990 Suzuki GSX... | Answered on Oct 28, 2018


Hi, Dougweaver 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.
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1990 Suzuki GSX... | Answered on Oct 28, 2018


Hi, Darrell 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
Suzuki 85 GSX R750 Service Repair Manual https://www.partsfish.com/page/oem-parts-for-suzuki http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals Suzuki GSX750F Suzuki Katana Wikipedia

1990 Suzuki GSX... | Answered on Oct 27, 2018


Hi, Thomas before testing any electrical component in the Starting 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. Ignition Switch not in the "ON" position.
2. Engine Run Switch in the "OFF" position.
3. Check the 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.
4. Bank angle sensor needs a reset or is faulty.
5. FOB battery low or dead.
6. Faulty ignition switch.
7. Faulty starter button.
8. Faulty kickstand, clutch, neutral safety switch.
9. Security alarm needs a reset.
10. Starter relay, solenoid, starter motor or circuit wiring faulty.
11. Starter armature or field coils have failed.
12. Main fuse or circuit breaker may be blown or faulty.
13. Faulty ignition relay.
14. The electric starter is working but starter clutch has failed.
15. Check for engine trouble codes.
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.
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Suzuki 85 GSX R750 Service Repair Manual
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http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals

1990 Suzuki GSX... | Answered on Oct 27, 2018


Hi, Jsjss5 and the usual suspects are:
1. 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 preliminary 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.
2. Failed alternator/generator and or voltage regulator.
3. Loose or corroded battery terminals and or cables especially the "NEGATIVE" cable, look for loose, corroded, or broken connectors inside the cable harness at "BOTH" ends.
4. Failed main circuit breaker or ignition switch, check for loose connections and continuity.
5. Failed system and or ignition relay, check for continuity.
6. Failed ignition coil, stator, magneto, ignition/electronic module.
7. Failed CKP, CPS, CMP, MAP, TPS, or BAS sensor, corroded, loose or broken wire connector pins/sockets.
8. Throttle cables and or idle speed improperly adjusted hot idle speed should be 950 RPM to 1000 RPM.
9. Faulty neutral, side stand or clutch lever safety switch.
10. Air/fuel mixture screw improperly adjusted.
11. Accelerator pump damaged or not working.
12. Water or dirt in the fuel system, carburetor or filter.
13. Restricted, blocked or kinked fuel line.
14. Fuel tank empty.
15. The gas cap is not venting properly or fuel tank venting system blocked.
16. A failed fuel pump, pressure regulator and or fuel injectors.
17. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
18. Needle and seat stuck closed in the float bowl.
19. Lean angle switch is faulty or needs adjustment.
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.
Help bike cut out while riding Suzuki GSX Motorcycle Forums Gixxer com
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1990 Suzuki GSX... | Answered on Oct 16, 2017


Hi, 247quadracin nice novella and the usual suspects are:
1. Fouled spark plugs.
2. Discharged battery, needs to be 12.5 volts or better and be able to pass a "LOAD" test, your battery may show 12.5 volts but has little or zero amps and must be replaced.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting, leaking, spark plug cable connections loose check for spark leakage in the dark.
6. Faulty ignition coil or CDI or electronic control module.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
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.
Total Motorcycle Forums
1990 Katana GSX600F no spark won run
Suzuki 85 GSX R750 Service Repair Manual
OEM parts for Suzuki
http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals

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

1990 Suzuki GSX... | Answered on Mar 23, 2017


Sounds to me like the switch itself needs replaced. You could try pulling it apart and checking for corrosion and cleaning the contacts up but the switches are pretty cheap.

1990 Suzuki GSX... | Answered on Apr 07, 2014


Use adjustable needles.there should be five slots start in middle and get bike running.then adjust according to if bike is running rich or lean.

1990 Suzuki GSX... | Answered on Mar 08, 2011


hi, the obviouse thing here is to get a manual, however if you think you have the finess required to do the job its fairly straight forward, put bike on stand, raise the front wheel of ground, remove spindle from front wheel, remove calipers from forks, DO NOT REMOVE BRAKE LINES FROM CALIPERS, once you have done this you can then remove the front wheel, put spindle back through loose wheel inc spacers to keep all in place, remove front mudguard, i always tell people to try and remove the lower fork leg first leaving fork tube on the bike, some forks it is poss to do this as the busshing is fitted to the lower leg and not the chrome tube, undo the bolt in the lower fork leg on the underneath inside where the spindle fits through, once removed, using a container to catch the oil, pull dovn on the lug to remove it, if it comes of all the way you are in luck easy job, the fork can then be cleaned and new seal fitted, the manual would come in handy for fork oil levels,if the leg does not come off you will have to remove the whole leg, before you remove it undo the top nut on each leg as the yokes will hold it for you, it is difficult to undo once the fork is removed, once removed, lift up the dust seal, remove the clip, and then the spring from the top, grip the lower leg in a vice with protective jaws, on the flat surface only, to grab the tube area would damage the fork leg, once in the vice, push in the stancion fully depress and pull out sharply you may have to repeat this sevral times useing the stancion as a hammer until the seal is removed, replace in reverse order,
DO 1 FORK FIRST REASEMBLE THEN DO THE OTHER, hope this helps feel free to contact me, paul

1990 Suzuki GSX... | Answered on Dec 17, 2010


Check switch on front brake lever / master cylinder and the switch attached to rear brake lever may need adjusting or cleaning

1990 Suzuki GSX... | Answered on Jul 14, 2010


Hi and welcome to FixYa. I am Kelly

The float valve (Needle and seat) is stuck open. This can be caused by foreign particles in the seat area, (dirt ect) a very hard rubber seat on the needle or the rubber seat on the top inside of the of the carburator.
It can also be caused by a stuck or dmaged float.
The only way to properly fix it is to remove the fuel bowl on the bottom of the carb and investigate where the internal leak or cause is.

Here is a forum thread you might want to visit for future help:

http://www.gixxer.com/forums/showthread.php?t=221589

Nice pictures on the link but you have to click on many of them individually in order to view.

Thanks for using FixYa!

Kelly

1990 Suzuki GSX... | Answered on Feb 16, 2010


check rad fan to see if its comming on or is wore out and running slow your bike overheats in traffic because theres not enough air flow to cool the water flowing in the radiator like at highway speeds

1990 Suzuki GSX... | Answered on Jun 23, 2009


When you are on the bike and riding do you still have the choke out? And stop spraying starter fluid into the carbs..bad bad bad.... bikes start with out that stuff and if you need it then something is wrong.. your gonna mess something up doing that....let me know about the choke and we will go from there...cj_monaco@hotmail.com

1990 Suzuki GSX... | Answered on Jun 21, 2009


Possible solution: Cleaning the main jets in the carbs. They are separate from the idle jets and would explain what you are seeing. Dis-assembly of the carburetors most likely required. Although I had a bike that you could access the main jets for inspection and cleaning by removing a large threaded plug from the bottom of each carb. Second way without removing the carbs is to remove just the bowls with a short or specialized screwdriver (and a lot of patience). I'm sure no shop would recommend this however.

Good luck,
Techjoel

1990 Suzuki GSX... | Answered on May 24, 2009


The only reason to change it would be an oil leak you can't fix. Keep the oil reasonably clean and there should be no problems.

Please rate this answer. Thanks!

1990 Suzuki GSX... | Answered on Mar 30, 2009


Hello,


Try to unscrew the sparkplug and place the edge of it against the moto exterior cilinder, start the bike see if it sparks, if not you have to check the electric CDA of the bike.

Hope that helps.

1990 Suzuki GSX... | Answered on Feb 20, 2009


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 GSX 750 firing order Google Search Installing Accel Coils On 1979 Suzuki GS750L Suzuki 85 GSX R750 Service Repair Manual https://www.partsfish.com/page/oem-parts-for-suzuki http://mybikemanuals.com/suzuki/suzuki-gsx-owners-manuals

Suzuki GSX 750 F... | Answered on Oct 28, 2018


Does this motorcycle have a radiator if so, make sure it's full if it is go online and see if there's a sensor that shuts the bike down when it gets too hot. Maybe there's something wrong with that

Suzuki GSX 750 F... | Answered on Dec 20, 2017


compresion tsest could be a slightly bent valve, or valve too tight, inlet side.

Suzuki GSX 750 F... | Answered on Nov 06, 2017

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