Question about 1986 Yamaha FZ 750 FM (Japan)

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Yamaha FZ 750 FM

I have an oooooold yamaha that will start, but it dies shortly after. To keep it running I have to keep the enigne reved, and even that doesn't last long. Could this be a carb problem? I was thinking of giving it a good cleaning. I will also check all the fuel lines. I took out the air filter just to see if that was doing anything.

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It sounds like the idle screw is not set right., but if your going to clean the carbs anywyas. Clean them, sync them and see how she runs, if still doing the same thing the idle screw needs to be adjusted. The RPMs should be between 800 to 1200 while idling. If your bike is an older on it will most likely sit around the 1200 rpm at idle.

Posted on Nov 10, 2008

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Hi i have a yamaha fz 750 1987. there is no srark from either coils plus the bike was parked up for 2 years, can anyone help ?


its possible the cdi unit has failed or the hd leads/spark caps might be at fault, i had the same problem on a 1990 zzr600 it turned out to be spark caps where ao to high a resistance and causing no spark to pass. try this first and if still no spark id go with another cdi unit. hope this helps

Nov 10, 2009 | 1986 Yamaha FZ 750 FM (Japan)

4 Answers

Will a cdi ignitor unit off any other bike fit onto my yamaha fz750 1987 ? regards peter


Some will, but not all. The plug will differ from model to model, and the electronics may differ slightly as well.

Oct 05, 2009 | 1986 Yamaha FZ 750 FM (Japan)

1 Answer

Wont idle


lol buddy if its not idling turn the idle screw in until it idles get back to me if no difference 2ee8c57.jpg

Sep 30, 2009 | 1986 Yamaha FZ 750 FM (Japan)

1 Answer

How do the fuel lines route on my 1986 fz 750 I got the bike and they were disconected


Your in luck... You can route fuel lines any way you want just keep them clear of heat sources and any where they may kink. If need be, you can even get longer hose to re-route. Keep it as short as possible and you'll be fine.

Jul 27, 2009 | 1986 Yamaha FZ 750 AE (U.S.)

1 Answer

I have a 1988 yamaha 750


Easy to find! Just phone your local Yamaha dealer with the VIN numbers and they can give you all the information you want. In the off chance the dealer is too busy or just doesn't want to please a customer, just Google ' yamaha motorcycle texas ' and you will have plenty of other dealers you can call. Use your own state or any state in the Google search.

Please rate this answer. Thanks

Apr 02, 2009 | 1985 Yamaha FZ 750 FM (Japan)

1 Answer

Runs at 60 to 7 000 rpm leaks gass from drffinet spots


Hi Lakeyd,

This site has all te answer to your question and the bike inquestion, plz visit it www.xjbikes.com

All the best!.

Knight.(YAMAHA Seca XJ750A 1981)

Feb 09, 2009 | 1985 Yamaha FZ 750 FM (Japan)

2 Answers

Backfiring


Sounds like fuel is still entering one cylinder after releasing the throttle. Time to have your carbs cleaned as well as synchronized. Good Luck!!!

Nov 10, 2008 | 1985 Yamaha FZ 750 FM (Japan)

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