Resources

Service & Parts

Technical & Tips

Local Support

Service & Parts

Technical & Tips

Local Support

Questions

Owners listed on the database can have maintenance questions posted here, anyone can reply with info.

Panlite Windscreen
The GPz900r  uses a polycarbonate ‘Panlite’ (brand name) screen.

It’s a really good design (thought needs a tank bag!) and tucking down behind it gives you a genuine wind-break when highway cruising and keeps you surprisingly dry when that unexpected rain-shower hits.  But like all polycarbonate it yellows and develops fine crazing over time. Just UV I’m afraid, and in Australia we get that in spades!

I regularly use the ‘toothpaste’ polish trick to clean it up, but I would love to replace the the screen.

Plenty of acrylic replacements available, including some specifically designed for competition.  But I’ll be honest for the road I prefer the strength of polycarbonate.  But I haven’t found any after-market suppliers (Vstream don’t have anything for the GPz900r) and secondhand scrfeens are ridiculously priced – ranging on eBay from $500 (with stress cracks around mounting holes) to over a grand for a pristine example.

Maybe I should make my own replacement – with both clear (winter) and tinted (summer) options.  I know enough about plastic manufacturing techniques to think this could be a pretty simple process, the time-consuming part is creating a nicely finished timber vacuum-mould.  But this type of process requires multiple parts to be made and it’s just not economically viable for a production run of just a few parts – you might as well buy the one listed for a grand.

Obviously it wouldn’t have the fancy black edge finish of the OEM Panlite screen – but this is purely cosmetic and paint, or acrylic stickers or just tape would be more than effective and still look fine.

Anyone else be interested?

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Answers

Carb & Airbox differences
Nice article describing the differences between the models and how you can revert back to full power. Sounds simple but I’m not entirely sure it’s that clear cut – remember the A1 or A2 bikes were running on leaded fuel.

FYI I sourced the higher flow airbox intake for my A8 however it’s not a simple task to replace – the rubber between the carbs and the airbox) is hard and in-flexible, and even with new ones getting all of this back together is not for the faint-hearted.  In the end I decided that along with the cost of purchasing A1/2 carbs it just wasn’t worth the effort at this time – I’ll ponder it later when doing more work on the engine.

‘if it ain’t broke don’t fix it!’

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Rebuilding the Rear Suspension

Sid Young explains how to rebuild the rear suspension back to factory.  Recommend you track down a copy of his book on how to restore classic japanese motorcycles.

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Floyds Engine Rebuild (2000)

I wish I could contact Floyd (and his mates Richard & Dave) as this is exceptionally detailed and valuable information on how to rebuild the GPz900r engine AND get everything back into the frame – with minimal cussing!

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Starter Clutch

Great information from z900collector regarding one of the ‘oh no’ moments of a GPz900r engine – when the starter clutch won’t engage.  Not for the faint-hearted but it’s all there with great images and notes if you need it.

GPz900r (ZX900) Database

A7

A8

A9

A4

A5

A6

About the Site

My family loves older vehicles, the newest one we own is 2003!  But I am acutely aware of the ownership complexities especially:

  1. they often need more 'hands-on' mechanical work &;
  2. there often isn't any local expertise from the service centres;
  3. there is often no new parts available from the manufacturer;
  4. parts often have to be sourced 2nd-hand or from overseas.

So we often end up doing a lot of the research & work ourselves and this information gets stored either locally with the bike or online forums - although finding the useful parts in these forums isn't always simple.

The original goal of the site was simply somewhere for me to record service work & contacts on my GPz900r so that my kids (the one that likes bikes anyway!) could easily access it - it doesn't concern me if it was publicly available.

I then realised that with this online structure in place I could also offer it to other owners, and the site could potentially expand to record other owners experiences and expertise , meaning we can learn from others but also pass on this knowledge to subsequent owners of these wonderful motorcycles.

At least Covid-19 has given me plenty of spare time to pursue my passion for the motorcycle!

Location

Adelaide
South Australia

Email

gpz900r@motoshoot.com.au

Timeline

1983 - Honda XR200
1984 - wanted a GPz
1985-2013 - cars+family
2014 - finally got one!

Disclaimer

The information provided on this site (or links) is personal experiences from non-professional home-mechanics, so neither it's accuracy nor it's validity can be confirmed.  If you need professional advise please visit your local Kawasaki dealership or a qualified industry professional.

Like riding any motorcycle, at the end of the day the only opinion that really counts is your own!

The site is 99% free to use & your participation is most welcome. 

In Apr 2021 I started a GoFundMe campaign to purchase unusual but relevant resources such as microfiche.  As it is often not economical nor logical for individuals to purchase these items (eg. why purchase A1 info when I have an A8?), this campaign shares the purchasing & processing cost amongst many owners and over time potentially benefits everyone.

For their support only campaign contributors will have access to purchased resources, however this will only be a very small part of the site and all other information will remain completely free.

So if you enjoy the site and share my passion for the GPz900R, please consider donating to the campaign.

 

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