fastbob

Does it never occur to these one post wonders that some of us might actually like to see what the outcome was to these enquiries ?

Nearest thing I can find is an Aprilia but not air cooled .

Crikey ! This thing's got four valves !

If this is the bike in question then I'm very surprised to see that it appears to have double overhead camshafts . That's practically unheard of on a 125 single . Normally the Chinese rip off an existing design but I've no idea where they got that one from . Any ideas ?

If you have been using a poorly performing chain lube then there is every chance that your chain and sprockets are worn out .

In case anyone is curious. https://www.acs.org/content/acs/en/molecule-of-the-week/archive/m/molybdenum-disulfide.html

Until today I never looked to see what size mine were . All I know is that the one I've thought of as a 6mm for years is actually a 5mm .

Before you go shelling out on a complete set , ask yourself which ones are you actually going to use ? Personally I seem to mostly use just one ( On metric bikes ) and it's my 5mm . I've had this thing for 30 years and we've shared many adventures . I've no idea what make it is but it's never let me down .

Having rebuilt a number of older CG125's , I too do not know what part you are referring to . What year is your bike ? Maybe this is a modification . When you say the Air Filter , do you mean the Airbox or do you mean a Pod Filter ? If it's a Pod Filter then this is probably a modification done when someone realised how badly the bike ran especially when it's sucking in water . I've checked the CMSL website and I can find no reference to any rubber flaps that straddle the frame in the area of the airbox or battery . I trust this is a Honda CG125 and not one of the plethora of imitations .

And as a footnote , when this thing's on the road I'll be dropping a whopping 700 cc's but only 10 hp . It's a funny old world isn't it .

I'm not bothered anymore . I have to say that really because I've just lost 100 hp and gained 100 cc . Still got the same castle though . ( And colour scheme , and bag ....)

Well it's been a while now and I'm sorry to say that I just can't get on with this new operating system . The most frustrating thing is that if I view something in unread it then vanishes from the list and I don't know where it is anymore .

I think you are on the right lines here .

I just can't work out how it could be applied . Unless they are covering themselves against loss or damage incurred in some unforeseen civil unrest that could be attributed to Covid 19 . They probably wouldn't be able to tell you if you asked them but they just stuck it in there incase the unimaginable occurs .

Here you go .

As others have said , get a second opinion .

So what's this thread all about then ?

To the OP , have you tried sitting on it with your helmet on ? What does it sound like then ? My point is , a lot of bikes sound horrible when you're not used to listening to them in a confined space without the filter of a helmet .

It would do no harm to rule that out .

Sounds like a bad connection somewhere . You're going to have to pull apart all the multi pin connectors and get in there with little folded up bits of sandpaper or a needle file set and clean everything up . And don't be misled into squirting WD40 over everything because all that will do is make it smell nice . Start with the one that connects the dash board ( Obviously ) Good luck .

Here's a thought. https://www.ebay.co.uk/itm/BRAND-NEW-ENGINE-YAMAHA-125cc-YBR-TYPE-NON-GENUINE-/193393301013?_trksid=p2349624.m46890.l49292

Well if a new tensioner dosen't work then the camchain itself will need replacing which is an extensive job that could easily be described as a complete engine rebuild. So , no , it is not hyperbole .

Ok . Here's a genuine tensioner for £18 . It's held on with two bolts that can be reused . It has a gasket that you can make from cardboard for nothing . Fit as follows . Undo the two bolts and take the old one off . Scrape away any old gasket OR if the gasket is intact just bung a bit of silicone sealant on it . Undo the single bolt on the end of the new one and carefully take out the rod and spring . Push the plunger all the way in and bolt the new tensioner onto the bike . Insert the rod and spring and you will hear a clicking sound . That's the ratchet taking up the slack . Keep the spring pushed in and screw the single bolt back in . This procedure must be followed exactly or you will overstress the camchain . https://www.ebay.co.uk/itm/YAMAHA-YBR-125-CAM-CHAIN-ADJUSTER-TENSIONER-UK-STOCK-/274097052578?_trksid=p2349624.m46890.l49292

You missed my link . A genuine endless camchain is £17 What puzzles me is what exactly is wrong with the camchain ? It's hardly likely to be stretched or worn at 5000 miles . I'd probably stick a manual tensioner on it to see what happens .

So why would you want another YBR ? Your experience of this bike hasn't been exactly positive . The first job I ever did on a bike was a Camchain replacement . You've got to start your journey to mechanical competence somewhere . Slap a Chinese Big Bore kit on it while you're at it . https://www.ebay.co.uk/itm/184538367945