New set of B8ES plugs, started first time but still struggling so up and down the car park a few times. It seemed to rev better on full choke, even when warmed up but wouldn't tick over for long. So, got it insured, and then down to the bottom of the estate and back - about a mile. First trip it cou...

The 0.05mm to 0.10mm clearances are the old specs which were revised to 0.10mm to 0.15mm due to instances of valve seat burning, especially on the exhausts They should be kept as close as possible to the upper figure of 0.15mm and never let to get below 0.10mm. If it wasn't for forums like this one...

Thank you Zed1015. I followed my manual which says 0.5 ~ 0.1mm. I left the plugs out overnight, put them back in this morning and it started up, but not running well. It wouldn't rev above 3,000 rpm and the left hand exhaust didn't get hot. I changed the plugs back to the NKG B8ES and it started and...

Thanks for all the ideas. It's running Dyan S electronic ignition so no condenser. I have lifted the top off, and all of the valve gaps are between 0.07 and 0.1mm. All of the buckets spin easily with just the prod of a finger tip, so they don't appear to be sticking. I tried spinning the engine on t...

I don't get to ride my KZ900 often enough and last year was so busy, I am sure I didn't ride it at all. Charged the battery on Friday, bit of fresh go-go juice and prodded the button, and he started straight away. Choke full on, ticking over at 2,500 to 3,000 rpm. I got on and rode it out of the fac...

Thank you Photobucket for nicking my pictures

This is what my Z900 looked like when I first bought it



And this is now

To finish this off, in case anyone has the same problem, there are two screws as in the picture below. I had to grind one of them out with a dremel but they are just M5 x 9.5 with an integral washer, so not hard to replicate. The aluminium plate holds the plastic cup in. https://i.ibb.co/r4bCpnG/ins...

Has anyone got a good source for that O ring, I have a NOS European spec Z1 master cylinder that has a weep from the joint between the plastic and main body. Regards Steve I got a 47mm ID, 3mm CS EPDM O Ring for mine, but it's a bit too big. I was going to get a 44m ID one, and try that, but I don'...

TGreenfield wrote:photos

Cheers for the offer, but I thought you had an o ring

I'll give a rebuild a go first, so have found a suitable sized o ring.

Richard

The plastic bit is held on by 2 screws which are hidden under the plastic cover in the bottom of the chamber. Once they are out, it just pulls off. There's an o ring that makes it seal - but its not available from Kawasaki. I have got a spare one that has been Xylon coated if you need one. Two scre...

Cheers lads, I'll have a good look tomorrow and see if I can get it off without breaking it

Hello everyone My rear cylinder is leaking, in fact it is now empty, so I bought a new seal and piston and then removed the cylinder. I have obviously ordered some parts, at great expense that are not needed, as by the way the brake fluid has removed the paint, it has leaked from further up. As it i...

When rebuilding my Z900, my front mudguard had been damaged, so I bought a new one from Z Power. The quality is every bit as good as the original.

There were other parts which were cheaper from Z Power than re-chroming the originals, so I bought them instead and was very happy with the quality

Hi everybody :) The starter motor on my 1976 Z900 has always been a little slow as if it's not quite powerful enough to spin the engine quickly enough. I have removed it and stripped it down to find the brushes are well within the wear limit, and nothing too tight or indeed loose. I'm going to give ...

Cheers CAT3 All back together now, axle collar bolts to 58 lb ft (spacers removed), caliper bolts to 21lb ft (plate hammered flat and refitted properly), clamp bolts to 14lb ft (arrows pointing forward), speedo connected up and working, and front wheel spins freely. I might change the oil and filter...