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Zx400

 by Boatloader
Hi there.

If it's a 87 bike it will be a GPZ as they were made upto 1990 (I believe) when it was replaced by the ZX4.
GPZ400 crank cases will state ZX400 on them.
Most parts are same as the GPZ600R just some of the engine internals are different.
Carbs share the same spec as the C-type models of the 600 engine. I'll post them if you'd like.
I found it a struggle to find exact 400 details for valve clearances etc, but seemed to work fine with 600 spec gaps without rattles or performance loss.
Air box and filter are same as 600 model too.
I've still some FX400/GPZ400 parts if you are interested.

Wish you luck with your restro!
Steve.

Posted Apr 9 2011, 07:48 PM in Tech Talk

zx4

 by Speedbump
Hello all, just purchased a 1988 zx4 been stood for a few years, wanted to know if zxr400 clocks will work ok. Thanks for info :fdq

Posted Oct 24 2010, 09:22 AM in Kawasaki Chat

ZX4-G front forks

 by eddman
ok ok I know its an old zx4 but apart from the forks its not a bad wee bike.

My forks have seen better days. Last year I had to change the fork seals for the mot but when I ordered them they were the wrong size, when I ordered new ones by size rather than model I found that zx6 ones fitted. The seals that fit are oil-: 41-54-11, dust-: 41-54-6. The ones listed for my model were 52mm outside diameter, Could this just be that the ebay seller got his listings wrong?. I have been looking for replacement forks and there are some about,but surely if I buy a set that came off a 22 year old bike they're going to be the same sort of nick as mine.
So Im thinking maybe I could fit some newer forks,this is where I need a bit of help. Like I said I have been looking at forks and im wondering what about a set from a zx6-g?. I know that I would have to try and get a complete assembly ie; forks,yokes,brakes and front mudgaurd,is there any difference in the front wheel size between a 400 and 600, can I keep my front wheel?. does the head stock size vary between models? would the zx6-g steering spindal fit in the zx4-g frame?.
I have also been thinking about changing the rear wheel fron an 18" to a 17" so I can get a bigger choice of tyre,is this possible just by buying stock parts?
Obviously I would notify the insurance company about any changes but what about vosa,would I need to get the bike looked at buy them to agree the bike was fit for the road.
Any help would br greatfully received.

Cheers
Ed

Posted Jun 10 2010, 12:12 AM in Kawasaki Ninja Sportbikes.

ZX400g Manual

 by tim1949
Can anyone help me find a workshop or repair manual for my recently purchased ZX400G (1989 F Reg). I'm fairly sure it's the same as a ZX4, but i'm not 100%, although I can't find a manual for that either.
Hope you can help me.

Posted Jul 6 2009, 08:17 PM in Tech Manuals

ZX400G

 by tim1949
Hi to everyone. This is my first post. I have just bought a 89 ZX400G, and trying to source the correct manual for it. It appears to be the same as a ZX4. Is this accurate, and do they share the same mechanicals? What about the ZXR400, I have seen a manual for that bike and a lot of the bits look the same as mine? Hope someone can help. Thanks

Posted Jun 16 2009, 07:03 PM in Tech Talk

zx4 f3

 by zx4f3
Hi all im just wondering what this is worth as im new to bikes. I have a 1988 ZX4 F3 400cc classic racing bike which was first reg in this country in 1996 it is in really good condition and starts n runs but it needs a complete exaust as its missing. a couple of the plastics do have scratch's on them but non of them are broken of missing. O and it could do with a back tyre for mot. apart from that it is all there and complete.

So can anyone tell me what sort of money it is worth or if anyone wants to make me an offer on it. you can email me on devilishtaz@gmail.com or contact me on here.

Cheers Andy :228

Posted Jun 14 2009, 09:43 AM in The Trading Post

kawasaki zx400g 1988

 by wayne1984
hi there i have a kawasaki zx4 zx400g 1988 import its just had a new engine fitted it turns over but there is no spark at the plugs i striped the bike down found some broken wires so i got hold of a new wire loom all fitted but still the same problem can anyone help the problem is the engine turns over but will not fire and there is no spark at the plugs ??????

Posted May 11 2009, 09:35 PM in Tech Talk

ZX4 E Reg

 by K17Scuba
ZX4 400 cc 4 cyl bike. Lost interest when I bought a 750.
Japanese home market grey import model. Handles nicely & quick for a 400.
When I removed some loose wires on the side stand safety cut out, it would not start again but as I had a 750 I just parked this in the garage & left it about 8 years ago.
It has a new rear tyre & would be ideal for somone that has one of these & wanted it for spare parts.
E.mail me at k17scuba@yahoo.co.uk for photos,
or phone me at work 0113 272 0151
Ask for Don,
(Leeds area if you want to view it)
Offers around £100
still in my garage in march 2012,
wife wants shot of it

Posted Dec 25 2008, 02:33 PM in The Trading Post

spark plug size (spanner)

 by higgsy
What your looking for is one of these in 10mm? ( that's what they are in my zx4)
Posted Image
And you can get them from just about any auto shop. But if your feeling lazy give these fellas a shout.
http://www.bitzforbikes.co.uk/generalProdu...p?ProdTypeID=94

Posted Jan 3 2008, 06:34 PM in Tech Talk

Spark Plugs

 by higgsy
I did on me zx4, But all i ended up doing was pushing the socket down as far as it would go, And then pushing the ratchet extension into the socket just enough to get it to turn. If it definately is a 10mm plug i would seriously look at buying an extra long socket. :kbv

Posted Nov 12 2007, 09:06 PM in Tech Talk

carburetor problems

 by AR15Ron
higgsy
Mar 17 2007, 03:51 PM
I've got a zx4 that i'm currently getting up together problem is i've never worked with this type of carb before ie: The throttle cable i'm used to pulled the sliders up and down. But these open the valves below the sliders and seem to have a vacuum chamber that the sliders move up and down on. I seem to be getting fuel into carb bowls but it doesn't seem to get to the pot as plugs are still bone dry. Any advice or a website with details on this would be gratefully appreciated.

Correct, the sliders move by vacuum. You can make sure you have fuel by loosening the 4 crews that are the drains on the bottoms of the carbs. Mine use a torx bit. Make sure there is a vacuum line to fuel petcock, it will not flow fuel without vacuum. Also make sure you do not have disconnected vacuum lines at the intake boots, or other sources of vacuum leaks.
When I got my bike someone had removed all the emissions stuff and threw it out. It would barely start and would not run without the choke. I noticed the slides were not moving and found he had plugged both the vent lines on the carbs. So make sure no one has hacked up all your lines and plugged or unplugged something that should or shouldnt be!

Posted May 24 2007, 10:01 AM in Kawasaki Ninja Sportbikes.

carburetor problems

 by higgsy
I've got a zx4 that i'm currently getting up together problem is i've never worked with this type of carb before ie: The throttle cable i'm used to pulled the sliders up and down. But these open the valves below the sliders and seem to have a vacuum chamber that the sliders move up and down on. I seem to be getting fuel into carb bowls but it doesn't seem to get to the pot as plugs are still bone dry. Any advice or a website with details on this would be gratefully appreciated.

Posted Mar 17 2007, 02:51 PM in Kawasaki Ninja Sportbikes.

a question for wizz

 by StuZ1
Just did a quick search on the web and found two sites that claim the zx4 and the zxr400 share the same engine...



:fdq Does anyone know here :fdq

Posted Mar 6 2007, 10:13 PM in Tech Talk

a question for wizz

 by higgsy
being god of all that is kawasaki :332 in your downloadable manuals i cant see anything for the zx4 i know it's an import. am i right in thinking it's the zxr predecessor ? if so would the engines be the same. cant seem to find a lot on the zx4 so any help would be gratefully apreciated.

Posted Mar 6 2007, 09:53 PM in Tech Talk

1988 ZX4

 by DAN
HI CAN SOMEONE HELP PLEASE
I HAVE A ZX4 IMPORT AND NEED SOME BITS BUT CAN NOT FIND THE RIGTH BITS
WHAT FITS???

Posted Mar 21 2006, 10:35 AM in Tech Talk





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