Z1A Carb's sticking slides

[scott]

Hi Guys,
i have stripped a set of z1a carbs for a friend and cleaned them. He complained that his carbs always were hard on the arms when shuting off the throttle....i noticed that the slides even after cleaning were quite tight in their homes, even getting one or two of them back in was not plain sailing. The slides seem to rise ok but coming down there is definitly some resistance.Any ideas as to why and what can be done??

Scott

[chrisu]

I'd start by checking to see if the carb bores are oval at all.

[DogsbolloxofZ1B]

Q. Have you detached the slide from the arm and were they still stiff to
fall? If they are free then I'd be checking the split bush on each side of
the pivot, particularly the OEM ones as they have a fine carbon paper
embedded within the bush, these sometimes swell-up and cause the
pivots to stick and hence the slides.

The issue of ovality is an interesting one as unitl recently I'd never seen this but recently overhauled a set of early Z1 carbs and one was so oval I had to make an extractor to get the slide out and basically the carb was US.

[scott]

The slides are sticking with no arms etc connected.....just simply plopped into the bores.....what happens if they are oval? Do i replace the carbs? Why do they go oval? Dogsbollox...what does US mean?

[Geoff Meager]

Scott ... US means .... shagged - knackered - busted - useless - Fu*ked -bin job - time to buy a new one

[scott]

Cheers Geoff....how are you mate, anyway? I suppose i will have to post a thread to obtain some carbs then?

[DogsbolloxofZ1B]

Scott, are all four showing the same sympton? Very unusual. When I strip carbs I do keep every part bagged by carb No but even when I test slides in other carbs they work fine. The next thing for you to check is whether the slide is distorted or the bore.

Years back Kawasaki had problems with the Z100J slides which had some sort of plating on them which 'picked'up' on the bores and sometime stuck but the 900 ones are jusy ally coloured by a chemcal process so should be fine.

If you send them to me I'll take a look, not sure where you are.

Mike

[scott]

Hi Mike.....i think 2 or 3 of the slides are tight....i can't remember which ones but sure no 3 was ok. I'll ask the guy whose carbs they are about what he wants to do next. I'm not to far from you.....portsmouth.