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please help keeway superlight

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murray44
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Joined: 20 Apr 2020
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PostPosted: 11:57 - 20 Apr 2020    Post subject: please help keeway superlight Reply with quote

so ive owned my keewaysuperlight for around a year now, looks great but is a piece of s##t really regret buying but budget forced my hand and the shiny bits were appealing 🙈, anyway latest problem if anyone has advice would be great help.... bike starts fine first time everytime, however after a few minutes will lose power in the revs , untill it comes to a standstill, start the bike again (no problem) but will not pull away , its happened a few times now , the last time i left it a few days took it out to try it again and worked fine for a few weeks , now its done it again , not many garages keen on working on these bikes and i dont wanna throw lots of money on something only worth 1200 quid , but this is my only mode of transport , my gut instinct (and i know very little about bikes is its the clutch) but hard to
see why that would happen periodically
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kgm
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PostPosted: 12:15 - 20 Apr 2020    Post subject: Re: please help keeway superlight Reply with quote

murray44 wrote:
so ive owned my keewaysuperlight for around a year now, looks great but is a piece of s##t really regret buying but budget forced my hand and the shiny bits were appealing 🙈, anyway latest problem if anyone has advice would be great help.... bike starts fine first time everytime, however after a few minutes will lose power in the revs , untill it comes to a standstill, start the bike again (no problem) but will not pull away , its happened a few times now , the last time i left it a few days took it out to try it again and worked fine for a few weeks , now its done it again , not many garages keen on working on these bikes and i dont wanna throw lots of money on something only worth 1200 quid , but this is my only mode of transport , my gut instinct (and i know very little about bikes is its the clutch) but hard to
see why that would happen periodically


What do you mean by 'lose power in the revs?"

Does it bog down and come to a stop, does it continue to rev without driving the wheel or does it hit a point where it won't go above a certain RPM? Some other behaviour?
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linuxyeti
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PostPosted: 12:26 - 20 Apr 2020    Post subject: Reply with quote

To be fair, Superlights are decent little bikes, however, you've told us nothing of it's history, how it's been maintained, is it euro 3 (carb), or older, or euro 4 (efi). How do you mean bogging down, if it is older, are you riding it with the choke on full, have you checked for a vacuum lock in your tank, when it bogs down, stop, open & close the fuel cap, re-close the fuel cap, see if that makes a difference, if it does, well, you know where to look. They are a noddy bike to work on, even with limited mechanical knowledge. We've just picked up a 4 year old one for my nippers friend, been left outside in sunny Wakefield for at least 3 years, coated in roadsalt, and assorted grime, so much so that even under the seat & tank the there was a bucket load of the stuff. Just spent a few days cleaning it up, and, it looks pretty much like new, and rides fine.

Why to you does it seem like the clutch, I can't think of a time where the clutch would cause cause a bike to bog down.
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Easy-X
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PostPosted: 13:20 - 20 Apr 2020    Post subject: Reply with quote

Lots of Superlight fans here... two of us any way Smile

Year would be nice, any mods you've done (or were done previously.) Last time any servicing was done: oil change, plugs, valve clearances, etc.
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Confusion
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PostPosted: 15:34 - 20 Apr 2020    Post subject: Re: please help keeway superlight Reply with quote

murray44 wrote:
bike starts fine first time everytime, however after a few minutes will lose power in the revs....


Our Keeway Speed 125 (same engine) had similar problems
on several occasions. It would run fine at idle and then die
when the throttle was opened. The problem was water in the
petrol. The short term solution was to open the drain
screw for the carb float bowl and let the water run out.
Once a year, it was necessary to remove the tank and flush
it out with clean petrol.

Drain off some petrol into a clear glass jar. Let it stand
for a few minutes to allow any water to settle at the bottom.
Ours had 20-30% water in the tank at one stage. It seems that
Chinese fuel cap seals are no better than Chinese medical PPE.
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murray44
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PostPosted: 12:29 - 21 Apr 2020    Post subject: Reply with quote

apologies was ranting but not being specific...so its 2018 fully serviced and maintained perfectly...appreciate all replies to date ...the bike its self has done just over 3000 miles so still new in my opinion hence the disapointment...so as i ride will will randomly...gradually lose all power so regardless of the revs, after ive pulled up aka come to a gradual standstill , it will start up and tick over while stood there but will not pull away at all
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linuxyeti
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PostPosted: 13:13 - 21 Apr 2020    Post subject: Reply with quote

OK, I'd check for ..

Vaccum lock in the tank, easy to test for, when it conks out, open & clost the fuel cap, and try again ..

Check for any kinks in the fuel line..

See if you can see any gunk on the blocking the throttle body intake, or, at least check the throttle body sensors are securely plugged in.

Check the connections to the fuel pump are also secure, and haven't come loose.

More tricky, check the O2 sensor, or replace it.. You might be able to get blanking kits..
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murray44
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PostPosted: 13:15 - 21 Apr 2020    Post subject: Reply with quote

brilliant appreciate your time , thankyou
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WD Forte
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PostPosted: 16:51 - 21 Apr 2020    Post subject: Reply with quote

murray44 wrote:
will randomly...gradually lose all power so regardless of the revs,


Still sounds vague to me but doesn't that sound like clutch slip as mentioned before?

forum diagnosis can be like pulling teeth sometimes
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murray44
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PostPosted: 16:57 - 21 Apr 2020    Post subject: Reply with quote

very muck so ha ha .. by loaing all power i mean to the bike will dradually come to a standstill and cut out ...when i restart it (which works) the bike wont move forward at all or a metre then cut out again
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murray44
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PostPosted: 18:49 - 21 Apr 2020    Post subject: Reply with quote

have been back out to bike witha friend , again the bike starts fine however it appears the clutch wont engage and allow the vehicle to move forward at all, we have removed the plastic covering to expose the clutch system and to the naked eye cannot see any parts that are broken or anything i have taken a video if this helps anyone to show all the cogs still seem to rotate , cannot start her now as oil all drained out so cannot video that ,
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Easy-X
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PostPosted: 11:42 - 22 Apr 2020    Post subject: Reply with quote

You might want to check the clutch cable is operating as expected, e.g. disconnect from engine end and work the lever.

The cable routing for the throttle was so bad on my one that I could get the thing to rev by turning the handlebars! AFAIK it was always like that from the factory.

Assuming that's okay, if you have the side off pop out the spark plug and roll the bike in and out of gear, working the clutch lever and observing the basket.

Any idea what oil was used on the last change? If you're adamant it's a clutch problem I'm wondering if the oil's affecting the clutch when it warms up. Certainly, in my experience, these bikes' gearboxes perform totally differently with fresh oil. And old, hot oil can lead to a game of "hunt the neutral."
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WD Forte
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PostPosted: 20:25 - 22 Apr 2020    Post subject: Reply with quote

I'd ignore the mileage as you can easily burn a badly adjusted clutch out in 3000 miles
Remove the 4 bolts, thrust plate and springs
then remove the plates
( noting the position and order they go in !!)
and check them for wear
Also, check that castellated type centre nut to see its not worked loose.

A good friction plate will probably only have say a 1mm thickness of 'cork'
so if its paper thin or down to metal, your plates have worn out.
A manual will give you exact specs if you have one
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Defuzze360
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PostPosted: 03:02 - 23 Apr 2020    Post subject: Reply with quote

murray44 wrote:
have been back out to bike witha friend , again the bike starts fine however it appears the clutch wont engage and allow the vehicle to move forward at all, we have removed the plastic covering to expose the clutch system and to the naked eye cannot see any parts that are broken or anything i have taken a video if this helps anyone to show all the cogs still seem to rotate , cannot start her now as oil all drained out so cannot video that ,


Hi murray, I'd suggest looking at the clutch linkage follow the clutch cable from the handlebars to the engine and you'll notice it straight away check if it's stuck in a certain position and if so that would be your problem hope you get it sorted mate.
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murray44
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PostPosted: 17:10 - 28 Apr 2020    Post subject: keeway tools Reply with quote

simply to save the mechanic charging me more to take seat off and check..does any keeway superlight 125 owners know if there is or isnt a toolset under the seat please?
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Nobby the Bastard
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PostPosted: 17:43 - 28 Apr 2020    Post subject: Reply with quote

If you need to use tools to get under the seat there isn't any tools underneath it.

It sort of defeats the point.....
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dynax
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PostPosted: 18:14 - 28 Apr 2020    Post subject: Reply with quote

Get yourself a Haynes manual and learn to do maintainance, why pay someone to take a seat off when you should be able to do it yourself in a couple of minutes Thumbs Up
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steve the grease
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PostPosted: 18:30 - 28 Apr 2020    Post subject: Reply with quote

when it dies does it splutter a bit first , which might suggest a fuelfault , or does it just stop going and die completely, possibly suggesting an ignition fault,
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Easy-X
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PostPosted: 18:55 - 28 Apr 2020    Post subject: Re: keeway tools Reply with quote

murray44 wrote:
simply to save the mechanic charging me more to take seat off and check..does any keeway superlight 125 owners know if there is or isnt a toolset under the seat please?


The seat is bolted down with some hex-head bolts IIRC. If you don't have the tools (spanners, socket set) to do that, errr....

But no, there's no toolkit under there.
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murray44
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PostPosted: 21:50 - 02 May 2020    Post subject: clutch plates query Reply with quote

now ive established its the clutch plates both drive and driven im replacing on my keeway superlight i just need to know are these all a generic one size fits all on a 125cc or will mine have its own unique specification/size, finding ones online and available for my bike is proving impossible, so could i use for example a honda 125 set ??
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WD Forte
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PostPosted: 23:41 - 02 May 2020    Post subject: Reply with quote

I'd first establish what the engine is cloned from
Honda Suzuki or Yamaha.
If say its a Suzuki Gn 125 clone, the chances are
Suzuki Gn125 plates will fit
If its a Honda Cg125 clone, do similar and so on
( it does resemble a CG125 type from what I've seen )
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Easy-X
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PostPosted: 01:31 - 03 May 2020    Post subject: Reply with quote

Superlight specific parts I used to get from here:

https://www.superlightpartscentre.com/clutch-post-2011-parts

These guys know more about the bike than the importers Smile

IIRC it has a Chinese 157FMI engine (which is based on the Honda CG125* of yesteryear) if you want to look for generic parts.

I would recommend getting the "Generic Chinese 125" Haynes Motorcycle manual or I can send you the poorly translated workshop pdf.

*fixed typo
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