♠️ M77
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Turn the key on/off 3 times , and the error code must come up – Tell us what it says or count blinks from Fi light.
Eg. 10 blinks _pause_2 blinks_pause 4 blinks ===> That’s 10-2-4 error code.
There is also service manuals on this forum for every 650cc bike i can possibly find, uploaded there also.
Welcome to the site!
Post a picture of her and make a new journal topic , it would be interesting to see how you will restore her 🙂
Hi Tha k you so much for the response and sorry it took so long for me to get back to you. My bike has since broken and am now looking for a new engine 😥
What’s broken ? Is there a way to save it buy a way or rebuilds ?
Where is the best place to get upgraded jets from?
EBC UK makes em or KeyStar Japan , I may have some in stock (as i keep a few for GT customers upgrading to K&N filters) , send an email. Or any ask any local hyosung dealer such as TNorthEast (one word) online as they are one of the oldest dealers still doing hyo parts, ring them for jets.
Good to see it out in the sun, hope you have been putting as much “sunshine” miles as you can on her, winter is coming!
It’s okay, i will find a way to simplify this site even more so there is less things to click around!
Here you go:
Regards
Send us an email using “Contact” at the bottom of the site , no problem.
Ciao sì spediamo in Italia senza problemi, abbiamo molti clienti su questo sito dall’UE. Inviaci un’e-mail qui sotto e se possibile inviala in inglese, per favore, poiché alcuni membri del nostro team non capiscono l’italiano (stiamo imparando!) Grazie e benvenuti sul sito. (Scusate per aver utilizzato Google Translate)
👇⬇
The recommended jetting is 90 and 92.5 for the 125cc , same goes even for the leovince twin custom pipes made in italy too. Pilot Jets = They stay the same forever.
Go in tutorial section and look for these tutorials
- Slide Mod (good mod)
- How to remove the intake pipes (very delicate rare parts now!)
- How to remove the airbox off the bike a proper way
- Carb Jetting
Regards
You may just have air in the rear brake hoses that go to the “middle cbs box” that links both front and rear brakes. You may have to bleed the whole system
OR , pump the rear brake only with a bleed kit from amazon until the air comes out. then close the bleed nipples, pump the brakes a few times until you see pistons move on the rear one ,
If pistons move half way out, push them back in by hand, you will hear a “hiss” (faint hiss) possibly inside the master cylinder confirming air has been exhausted back (reverse bleeding if you will!
Hope this makes sense
Yes about 1-2hp & Hyosung’s exhausts weigh an absolute ton! – Your bike will roll a tiny bit faster with less weight (maybe 5kgs saving) , less strain on the clutch too.
Oh, I failed to mention that the dash is intermittently showing FI along with the red FI light. Its intermittent and not permanent. Goes away when the bike is shut off but starts again when moving. I believe its caused by the faulty speed sensor?
Can you get an error code out of the ECU ?
Leovince = Fantastic sound! , maybe 1hp boost on engine with baffles inside. It “MUST” have baffles, as 125s always perform better with baffles in.
Sprockets = Your rear is 38T and 12T front = Max speed “theoriticallly” is 110mph, so no way you will never exceed the kit we sent you.
Focus more on beefing the clutch as old clutch wears down , newer plates and newer springs will restore some of the lost torque it had before.
Torque matters more than actual top speed.
Air Filter is also used on GV250, it flows enough air for a 125cc 😉
Good news … except for the photos, (not your fault). I’m happy about that fix. I should be fixing my bike. Rear brake has been staying on since i got the bike & it’s toasted the disc. Haven’t ridden for a week & there was no MotoGP so i’m a bit edgey. I think the Rear Master Cylinder is siezing-up, but it’s a guess. I also lost a grub screw from the rear caliper on wet roads, so maybe water & dirt got in & is making a slider stick. Ordered an aftermarket Brake Master Cylinder & hope it fits the bike & isn’t rubbish. I never used the back brake this hard in my life – it’s been locking-up the rear and sliding up to the cars that pull out infont of me. Once the bike turned left & when it stopped sliding it almost threw me over the highside, to the right. Brakes … need those working, hey? 😉Yikes, you definitely need brakes both front and rear working very well, this could a good excuse to overhaul the the whole brake system anyways
Hmmm , i would say that there isn’t one online , usually that’s an entirely custom job done by metal workers / fabricators who are used to doing chopper bikes (cruisers) ,
IMO = I think that picture of the comet is not my taste , you could maybe try yamaha racing fairings and make custom seat to keep everything very slim at the back if you want and at least the rear subframe is not compromised , there is usually no going back after this , just an opinion of mine!🤐Still not working. Ive sorted the issue out on my bike anyway but as the project progresses it is handy to post up a pic or two to demonstrate.
I found the error, i am working on it, will try to reprogram some code this weekend bare with me. My test account couldn’t upload an image, how weird.
Awesome! – Leave a review on the shop page if you haven’t already 😉
Jets = We can get em anytime. Just send an email with sizes you want.
Pilots = already on the shop
Bore Kits =No such thing and the crank is only happy with the current pistons that’s on it.
I suppose you could put her on Autotrader and Ebay Classifieds, weeds out a lot of time wasters on Facebook in fairness, i always have a hard time selling on FB lol.
Photo uploading still isn’t working. Im using my phone and always have since I joined. Its been fine up until now.
Will test it now… as admin.
If it shows, its working on my end
I will login tomorrow as a dummy account to retest.
Are there no aftermarket or alternative options?
Sorry no, they are very unique.
