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PrzemekParticipantHi
A fellow gv125s rider has an issue – no temp on the dash, also the fan doesnt start. He changed the temp sensor, checked the wires still nothing. Any ideas or go straight for the ECU?
PrzemekParticipantI will definitely I will Should see his face this morning when I show him the video. Idiot
Im glad You managed to figure it out, it sucks a lot that the cause was somebody intentionaly damaging Your bike. But it is a good thing you have it on video, now make him pay for the damaged line, lost breaking fluid and Your time (not to mention the potential risk to Your health or even life if You didnt catch the issue on time). If he has a problem with paying just go to the cops with the footage, they should set him straight (it carries the signs of murder attempt)
PrzemekParticipantRight done this There not fluid coming out from front brake is that normal?
Loosen the lower screw on the front brake and then try to Press the rear brake to see if the fluid will come out. Do it coupe of Times, if the fluid starts to go, tighten the bolt, pump the brake, hold it and loosen the screw, the tighten. Then te same for the rear brake (check rear fluid level and top off when needed).
PrzemekParticipantSame issue, after it sat trough the Winter, no rear breaks, no stoplight when breaking with the pedal.
I drained all the fluid from the rear system, topped it off, bled the breaks front and rear (for the front caliper its the lower one), topped it of again and it works perfect.
PrzemekParticipantAs You are already settled rider in Poland, can You please tell me how are things with parts? Maybe You already have some good supplier? Wish You the best!
Hi, there is an official Hyosung dealer and parts supplier in Kraków, MYMOTO.PL, already ordered few things that i needed from them
Apr 10, 2024 at 9:22 PM in reply to: Bobber GV125S – How to install mirrors in the handlebars? Grips are covered #12909
PrzemekParticipantHandlebar is hollow, i’ve installed weights, Just had to cut out the end of the grips to match the diameter inside the bar with enough space for the accel grip to move free, will post pictures tommorow.
PrzemekParticipantDont know, mine is 21′ i havent seen the new ones yet.
Based on the videos alone, i dont see any difference in the exhaust between 2024 and 2021, maybe the cat is integrated with the muffler?
PrzemekParticipantAliexpress is your friend.
Just swaped original exhaust on an ali one and it does make a hell of a difference.
Not Street legal probably but damn…
Sep 4, 2023 at 6:13 PM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11130
PrzemekParticipantJust did a test run, 30km and can confirm thi was the cause of my issue. Furthermore it doesnt stutter when decelerating anymore (it was very rough prior to repair, so much that i stopped breaking with the engine) It’s a different ride now, love it even more. Once again thanks Marcel for shareing Your knowledge 🙂
Sep 4, 2023 at 5:10 PM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11128
PrzemekParticipantSo i believe You are right. I took the thing out and apart, and look what i found. There was no signs of anyone ever dissassembling it so my gues it was like this from the factory.
Aug 24, 2023 at 7:00 AM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11052
PrzemekParticipantOk, today is the last day of good weather for me, weekend is going to be rainy so ill have the time to get this thing out and checked. Thanks.
Aug 23, 2023 at 5:43 PM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11043
PrzemekParticipant
is this it?Aug 22, 2023 at 7:46 AM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11035
PrzemekParticipantISCV on EFI? On the schematics i only found tps (throtle position sensor) and AIPS (air intake pressure sensor)
Aug 19, 2023 at 5:53 PM in reply to: GV125s idle speed when hot / ISCV problem (Idle Speed Control) #11029
PrzemekParticipantOk, i will try this since im already tinkering with the bike.
Here is a video, you can see the issue there for reference.
PrzemekParticipant5 speed, unless You count the neutral. The new GV are 125 or 300 only to my knowledge.
PrzemekParticipantThanks Marcel, did the shims, it now runs like a new one 🙂
PrzemekParticipantSo that’s a big no go. There is no adjustment screw on the rockers.
I realy need that service manual now 🙁

PrzemekParticipantit is too large to send via email, will try upload it here after i am done with work
How’s it going? I could realy use the SM right now. Im stuck and dont want to do any guessing with this 😉
PrzemekParticipantSorry 🙂 I mean adjustment. 😀
PrzemekParticipantThanks Marcel. Is the regulation like on one cylinder carb ones? By a screw?
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