20 Most Recent 1992 kawasaki Zephyr 750 Questions & Answers

sticking choke maybe when u push it back in when bike warm.

hi mate,, no u cant adjust these like that ,,they are self adjusting,, but a good carb balance will even things out,, if the carbs arnt in sync that can give a rattly noise,, try that first,, ,they have only got to be out just a fraction and noises can accur,, have u changed the oil and filter to recently,,

ZX750
ZL750 Eliminator
GPX750
GPZ750
Should all fit

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Bike-Doc

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They are fuel overflow hoses, and just hang down under the engine. If they are not vacume or fuel lines, then they must be the overflow pipes, one from each carby.

sounds like your battery has an internal short circuit, time to change it and hope nothing else got damaged

is there 2 cables at the throttle grip if so one being accel the other decel these need to be adjusted properly to eliminate your problem on my kawi- looseing bothlock nuts and screw both throttle cable adjusting nuts in fully to give throttle grip lots of play with throttle grip closed turn out the decel cable adjusting nut until the cable just becomes tight. tigten lock nuy. turn accel cable adjuster nut until throttle grip freeplay is approx 2-3mm tighten lock nut hope this helps

poor fuel, gummed up carbs. blocked fuel filter, if you in the US get some Berrymans B12 double the dose and put it in the gas, hopefully you can get it to turn and draw it through to the carbs, it should clean them out, also you can try the berrymans spray carb cleaner, remove air cleaner, make sure slider in carb is up and spray a bunch in.
did you have lights when it died or nothing at all?

carburator needds cleaning

you will need to get rid of safety cut outs. i.e kick stand sensor,etc

new choke cable maybe. Or choke is not actually a choke like on a car. It is actually a fuel richener. There are three jets in each carb. The main jet, idle jet and the starter jet. The main and idle jet can be removed. The starter jet, which is key to the problem, is pressed in. It is the small brass jet by the main jet. This gets clogged very easily. You see, this jet fills a small chamber under the choke rod from the fuel bowl. When the rod is slid out of the way when you slide the choke lever back, the fuel in this chamber is pulled into the cylinder when it turns over. I had to use a very small stainless wire to clean it out. I used a wire cut from my wire wheel. Disassemble each carb completely. Soak each carb in carb cleaner and wash off per instructions. Then poke the wire into the starter jet until it goes through. You will be able to blow air through it if it is unclogged. Once you do this it should fire right away and then idle. What you are doing by opening up your idle screw is allowing more air in to pull fuel in through the idle jet. Make sure you sync your carbs too. Smooth idle is also dependant on that.

you can replace the oil sending unit and get a mechanical guage to test oil pressure. oil pump never if ever fail.

Put the Zeph on the centre stand Undo the bolts attached to the side stand and disconnect the switch sensor wires. Be careful of the spring. To put the new stand on, just reattach as you would taking it off.

Most older bikes have a vacuum operated petcock that opens with engine vacuum.. at high speeds your vacuum will drop with the larger throttle opening..and if theres ANY vacuum leak (Look for one) the petcock may be closing, causing your starvation issue. The Petcock should have a "pri" setting (Prime) that bypasses the vacuum portion and allows straight gas flow- try riding on Prime and see if the issue goes away- indicationg the vacuum portion is the culprit

Remove head light and mounting, clocks. take off the top yolk. the ignition is held in with screwed rivets, you need to drill off the rivet head and it will come off. take out the screws, a small set of mole grips will do the job. and replace with relevant size bolts when replacing.,

You have'nt left much info to go on! If the indicators light up but not flash, possibly the indicator flasher unit is not working. If they are not coming on at all, have you looked at the fuse and connections.

there is no overflow for the carbs and are vacuum fed, it could possibly be the fuel tap is letting fuel thru to the carbs when the bike is not running and going into the cylinders. good idea to take the fuel line off the tap and see if it is letting petrol thru. if so, a new gasket and seal set should cure the problem. otherwise a float in one of the carbs is maybe stuck open.

Take your serial number to the dealership along with proof of ownership, they can make you one from the number.