Derbi Cross City 125 Valve Clearance

[Averandomage]

Hi all,

I have been skimming the internet for a couple of days trying to figure out what the correct valve clearance is for my cross city - lots of forum posts everywhere asking the same, but no real answer (I could find). I can't find a shop e-manual either, and the engine is variably claimed to be a honda CG, CLR , xl/r , CB or a chinese brand. The user manual helpfully advises to adjust the clearance if necessary, and thats it

Maybe somebody can help me out here? Any advice / help much appreciated

[ThePhatomfart]

You could try this manual its a chinese copy of the cg125 , called a Hartford , used in USA

https://www.manualslib.com/manual/825652/Hartford-Cg-125.html

use extreme caution

[Classickid21]

go to halfrauds and buy a manual for Derbi Cross city 125cc ? £17-20

[eastanglianbiker]

is it old enough or done enough miles to need the valve clearances doing?or is it just that its a bit noisy you want to do it

[Averandomage]

I will check out the pdf once I'm home (with caution ), thanks.

Couldn't find it listed on the Halford website unfortunately.

It is quite new, first registered in late 2015.. but turned noisier (after a day of rougher riding) to the point that I'm worried about serious damage, so thought it most prudent to make sure the valves are set right.

[RantMachine]

Ooh! Ooh! I can do the Spanner thing for once, too!

http://die-kleinkraftrad-ig.de/wissensdatenbank/reparaturanleitungcg125.pdf

This is the one I use when I have to do stuff on my CG

If it's anything like mine, it'll be bloody noisy no matter what you do with it

[Averandomage]

Ooh! Ooh! I can do the Spanner thing for once, too!

http://die-kleinkraftrad-ig.de/wissensdatenbank/reparaturanleitungcg125.pdf

This is the one I use when I have to do stuff on my CG

If it's anything like mine, it'll be bloody noisy no matter what you do with it

 

Thanks I'll check it out! You German by any chance?

While it is a noisy piece, it's definitely more so than it should be right now its the typical (or so I've read) clicking noise.

[RantMachine]

Nah, Cambridge boy through and through. Just found that through a bit of searching online, linked on a forum somewhere.

I'm not sure just how much noise is normal for a CG, and I figure I'm better off not knowing

I keep it serviced and I check the valves every now and then, that should be good enough

[Averandomage]

Nah, Cambridge boy through and through. Just found that through a bit of searching online, linked on a forum somewhere.

I'm not sure just how much noise is normal for a CG, and I figure I'm better off not knowing

I keep it serviced and I check the valves every now and then, that should be good enough

 

Fair enough!

Here's a bit of trivia - Spanner is colloquial for peeping tom in German no offence intended

[ThePhatomfart]

Oh but so very true

[ThePhatomfart]

This might point you in the right direction

https://www.dropbox.com/s/hweu4cy3p8fhqii/Derbi%20Cross%20City.pdf?dl=1

[Averandomage]

This might point you in the right direction

https://www.dropbox.com/s/hweu4cy3p8fhqii/Derbi%20Cross%20City.pdf?dl=1

 

Thanks, that's the manual I have, advising me to adjust them if necessary, but not to which clearance

[Averandomage]

Ooh! Ooh! I can do the Spanner thing for once, too!

http://die-kleinkraftrad-ig.de/wissensdatenbank/reparaturanleitungcg125.pdf

This is the one I use when I have to do stuff on my CG

If it's anything like mine, it'll be bloody noisy no matter what you do with it

 

Btw my engine has an OHC I believe, so might not be too similar after all.. however your manual mentions the CB 125 as an OHC engine,

and the valve settings are .08mm + .12mm vs .08mm for both on the CG.

I might check whether mine diverge significantly even in their un-aligned state.

[RantMachine]

Well, you'll certainly be able to tell which it is once you've got the top off

[ThePhatomfart]

Little bit more info,

[attachment=0]clearances.JPG[/attachment]

and have a look here

https://www.scribd.com/doc/129446337/Derbi-Technical-Training-2010-125-4T-4V

[Averandomage]

Little bit more info,

clearances.JPG

and have a look here

https://www.scribd.com/doc/129446337/Derbi-Technical-Training-2010-125-4T-4V

 

Thank you, I believe the 4T is only used in the Derbi GPR and is structurally different, but the instructions are great.

I will try and get more clarity based on engine number once I get home from work before 11pm some day

Really appreciate all the help gents! I'll keep you posted how it goes.

[Averandomage]

For anyone who stumbles across this;

I called up a garage and they suggested

.08-.12 (.10) intake

.10-.14 (.12) outlet

based on their database (Derbi Cross City 125).