- This topic has 8 replies, 2 voices, and was last updated 2 weeks ago by โ ๏ธ M77.
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May 10, 2026 at 11:48 AM #22516Bike Model = : Gv250 2018
Please help! What is every bolt?
I drained the oil from bolt 1 and everyrhing seems to be working fine but I read that it is the wrong drain!
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May 10, 2026 at 11:49 AM #22518

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May 10, 2026 at 7:10 PM #22522
1 & 3 – For gearbox area, so you got lucky!! _ Ignore them next time.
Drain Oil using #2ย in the picture
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May 10, 2026 at 8:57 PM #22525
1 & 3 โ For gearbox area, so you got lucky!! _ Ignore them next time. Drain Oil using #2 in the picture
so the fact I drained from #1 is ok?
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May 11, 2026 at 6:17 PM #22532
1 & 3 โ For gearbox area, so you got lucky!! _ Ignore them next time. Drain Oil using #2 in the picture
so the fact I drained from #1 is ok?
If the gearbox is OK and running, then don’t touch it again.ย ย ย You got very lucky!ย – Most owners who drain that #1 hole end up with all kinds of issues and have to rebuild the bike again.
You’re lucky!
Stay on #2 going forward ,ย like this tutorial
[How to Tutorial] How to Change Oil & Oil Filter on Hyosung GV125 GV250 GT GT250R GT125R
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May 11, 2026 at 11:26 PM #22535
1 & 3 โ For gearbox area, so you got lucky!! _ Ignore them next time. Drain Oil using #2 in the picture
so the fact I drained from #1 is ok?
If the gearbox is OK and running, then donโt touch it again. You got very lucky! โ Most owners who drain that #1 hole end up with all kinds of issues and have to rebuild the bike again. Youโre lucky! Stay on #2 going forward , like this tutorial
[How to Tutorial] How to Change Oil & Oil Filter on Hyosung GV125 GV250 GT GT250R GT125R
so why does #1 exist though?
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May 12, 2026 at 8:29 PM #22541
It has a spring, and washers and a sieve in there, it is purely for the gearbox cam shaft, because there is small parts there, so easier to service it after a rebuild, this is something of a concern for engine builders or garages rebuilding a damaged engine.ย ย It’s just an overengineered engine to be fair.
So general riders are told to just focus on #2 for oil changes.
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May 13, 2026 at 11:06 AM #22544
It has a spring, and washers and a sieve in there, it is purely for the gearbox cam shaft, because there is small parts there, so easier to service it after a rebuild, this is something of a concern for engine builders or garages rebuilding a damaged engine. Itโs just an overengineered engine to be fair. So general riders are told to just focus on #2 for oil changes.
what you speak of is all the #3. On #1 there is no spring and no camshaft pin or anything
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May 13, 2026 at 7:55 PM #22545
From the official diagram.

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