Reply To: Hi from leeds
Welcome Leo!
J&S , not been there for years. I usually visit the doncaster one.
Tap “Shop” at the top of the site and start with the essentials only:
- Oil filter , Air Filter , Spark plugs. Do a service on them.
- Must change (because they have a bad name) ==> OEM black caps for NGK ones and regulator ….. All other electrics should be fine as they don’t usually break down that much , exacept the odd brake switches needing a change (happens to any bike)
Use a YUASA battery that is YTX14BS (get it from Halfords) as they will be newer (some sellers online sell very old stock which is not good battery-wise!) - Chain if it has a 428 set , go to Startrights in Leeds and tell them we sent you. They will sort you out with a fresh chain kit (standard set)
If you wanted something more tried and true , here is a 520 set conversion, that page will explain it all.
Everything else is just a matter of your eyes (beauty is of beholder)
Don’t mess with the carbs UNLESS you know what you’re doing! if she runs and idles perfectly , then the ONLY things you can do for now is:
- Go to halfords and get ONLY “WYNNS FORMULA GOLD PETROL” , pour the whole thing in the tank. And ride.
This will clean your fuel lines, tank, carbs , your cylinders a little bit etc….
Do that once a month depending how many miles you do. - If you see “grey” colour fuel lines , Hyosung said replace them all because they are beyond the 4yr service limit (too old)
With this set here and also this set here
To make the engine last longer:
- EBC plates are good & trusted brand
- Get valve clearances done (or checked) , if you ain’t sure. Myself or Startright motorcycles will do it for you.
Hyosung says they should be checked or adjusted around every 4-6k mile - Stay under 11k revs (They don’t like redline for too long)
- GT250 or GV250 cooler is the #1 gift for the engine, it will really appreciate it. The 125 cooler is “tiny” , plus the 250 cooler is like a shield to stop dirt attacking the soft rubber intake pipes (most difficult part to get!) or rust up the carbs
- Make sure it has stainless exhaust pipes (Black Widow UK make them to this day)
- Michelin tyres are your #1 friend or alternative brand is Bridgestone tyres.
Avons & Shinkos are like suicide bricks!
I am digressing , hopefully i covered most bases and go ride! If you have other questions , ask away.
Stay away from sketchy websites (they have a lot of complaints on TrustPilot) they have “white & blue” backgrounds. If something is very urgent, go straight to Startright Motorcycles Leeds , they are the oldest hyo dealer in UK and i personally buy their stock also to fill some parts in this website-shop.
Definitely stay off Aliexpress too! Someone will tell you you can get cheaper plugs, even they sell fakes , as below: (some chinese sellers on ebay/amazon don’t care either)
https://www.ngkntk.com/newsroom/blog/emea/fake-or-not/