Question about 1986 Yamaha FZ 750 AE (U.S.)

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Location of tip over sensor on 1986 fz750?

Bike won't start after laying on side to haul home. It started to get into back of truck.

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SOURCE: 1986 yamaha fz750 wont start

Check your float seats,,they may not be sealing,,,,the pops in your airbox is the excess fuel Detonation,,,,,Be aware!!

Posted on Feb 12, 2011

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I bought a 1984 kawasaki 550cc ran when test drove. I paid someone with a truck to haul bike shifted a little but never tipped. Now won't start. Any suggestions why.


Due to the age of the bike I'm wager it is a fuel problem. If the gas in the tank is more than a month old it has become stale. If so then dump it and refill (half to three quarters full) with fresh gas. Add a bottle of STP Super Concentrate Fuel Injection cleaner (also good for carbs) OR Berryman's Chemtool in the tank and crank it over a good bit (though never use an electric starter for more than 10 seconds at a stretch, you must let it cool a bit at least 15 seconds before trying again). You want the mixture to get into carb (if so equipped) or the fuel system and allow it to sit overnight or one whole day.

Also if the bike was allowed to lay on it's side, oil may have contaminated the spark plug tip and it can't fire. Remove the plug and see if it is clean and dry. Make it so if it isn't. Carb cleaner spray can remove oil from it, allow it to dry and reinstall (don't over-tighten it).

Try starting it up again.

Aug 16, 2014 | Motorcycles

1 Answer

1990 Goldwing GL 1500


Most motorcycles manufactured after 1986 Have a little known safety device called a "Tip Sensor" It's not commonly known about.
There are different solutions for different bikes.
On carb models and some Harley's resetting the battery by removing the cables and reattachment usually works.

Most metric models require a switch reset.
Make certain it is ready to run normally, if it's sat then make sure the fuel is fresh, proper motor oil level and T clock just as you always should every time B4 you ride.

Insert the key into the switch, and switch it all the way across to parking lights or whatever function the other side is, in a smooth fashion.
then immediately back to the off position then to the normal start position. The sensor should reset, and the bike will start normally.

(if it's been down, please make sure you check it out completely or have your mechanic go over it)
A lot of bikes go to salvage before they're time, because most people don't know about the reset process.

Dec 03, 2013 | Motorcycles

1 Answer

I layed my yahmaha r1 down and it wont start


Hi, Tom you need to reset your tip over sensor 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 Yamaha, despair not, for a mere $0 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
bike blew over now it won start
http://www.r6-forum.com/forums/57-garage-mechanical-help/57282-06-r6-laid-down-now-wont-start.html
2004 2005 Yamaha YZF R1 Service Manual R1 Moto Data Project
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-yz-owners-manuals

Jun 15, 2011 | 2005 Yamaha YZF-R1

1 Answer

I'm buying my friend's Goldwing 1200, 1986 FI. Bike has been garaged for 4yrs and I tried to start it with new battery but won't start but it cranks, has gas.


Check the kill switch rock it back and forth to be sure it is making contact. Open it up and spray it with contact cleaner that is safe for plastics available at radio shack. After sitting for four years I would start with the fuel system. New filter and NEW GAS and check the fuel lines for cracks and leaks. I have seen bikes that sat for 6 months and needing the carburetors cleaned and reset.

May 20, 2011 | 1986 Honda GL 1200 Aspencade Gold Wing

2 Answers

Need to know how to install a regulator and estator in cavalcade ,1986 model? Also, need to know where they are located.


The Regulator/Rectifier is located ontop of the headlight. You can see it through the grill there. To change it requires the removal of the fairing, false tank, seat, instrument cluster cover. The Stator is located on the left side(sitting on the bike) of the motor. You can change it by lying the bike over on something soft, old mattress or the grass, on the motor - remove the left rear (secondary) cover and the stator cover. NOTE the lay of the wires and the wire guard. Remove the stator and follow the wires up to where they connect to the Reg/Rect behind the right indicator light. If you were only doing the Stator, then some people splice the wires in behind the left sidecover with heavy duty splices and solder combined. For more info on these bikes, join the worldwide email group via Suzuki Cavalcade.com Hope this helps.

Oct 31, 2010 | 1986 Suzuki GV 1400 Cavalcade LX

1 Answer

How much folk oil do i need on a yamaha fz750


Hi, The correct measure is 408cc per fork, go to FZ750.com for that and answers to just about anything to do with FZ750, PeterL.

Mar 29, 2010 | 1986 Yamaha FZ 750 AE (U.S.)

1 Answer

1986 Yamaha FZ750. Idle Timing problem. NEED HELP!


what the hell 45 1/4 turns budy the idle screw should be turned in till it idles at 1000rpm and the over is the mixture screw the mixture screw should be 2 1/2 turns out from being all the way in get back to me with resultseaab4d0.jpg

Oct 10, 2009 | 1986 Yamaha FZ 750 AE (U.S.)

2 Answers

1986 yamaha fz750 wont start


Hi Johnsong,

You will have to clean the carburators!
The float chamber has more fuel thn required could be a siezed or dirt in the float pin.
Clean and readjust to its correct level.
Try this site for more info www.xjbikes.com
Cheers!.

Knight (YAMAHA SECA XJ750A 1981)

Feb 09, 2009 | 1986 Yamaha FZ 750 TV (Europe)

1 Answer

Wont start


It is common for these to trip when layed over and the contact inside to stick and not re-set. It is a sliding wieght on a curved metal bar. When it slides too far to either side, it completes a ground circuit and kills your fuel pump. Dirt and crud can hold the slider in that postion even after the bike is stood back up. You might want to have a look at that. It lives under the seat on the right-hand side, I believe.... but don't quote me on that.

Nov 10, 2008 | 1986 Yamaha FZ 750 TV (Europe)

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