Hey everyone!

I have a Cyma 028 and it has been working fine up until now.

The problem is that I think I broke my firing mode selector. Before, it would fire "fully automatic" on the bottom most notch now labeled "semi auto".



Now when I put put the firing mode selector to "semi auto" on the very bottom, it will shoot 2-3 BB's before jamming. In order to fix it, I need to shoot a couple of BB's in fully automatic to "clear" it. Then I can shoot 2-3 more BB's before it jams again.


Please help! If you have a Cyma 028 Ak-47, please tell me if the picture I labeled is correct. Otherwise I need to adjust the firing mode selector!

Thank you!

calling doc alakdan! your needed for surgery!

Is your selector switch stripped? Or maybe it just needs alignment.

I still thinking until now what the caused of this probs other than stripping the "teeth" of fire selector lever
But...no, not the selector lever because he can still manage to switch from mono...este...semi to full auto
I'm not suspecting the "yaw" control lever(semi mode), because this only affect the semi become in full auto mode.

Sorry but i did not experienced that probs eversince.


Better check inside what happened.
This help you: Tech Dir(dotnet) or Tech Dir(dotcom)

Wait....can you please clarify what 'jamming" means to you?
You mean to say the trigger won't move anymore?
If so, maybe this is your problem: "Yaw" Control Bar(dotcom) or "Yaw" Control Bar(dotnet)

honga. ayaw na pumutok pero gumagalaw ung trigger? o di na gumagalaw ung trigger?

baka naman bagong modelo na 'yan? baliktad na kasi ung fire mode stops.

siryusli. probly a combination of causes.

1. may slop or may bungi na ung fire selector cog. see this for the fix.

2. umigkas na ung koneksyon between the selector lever components on the right side and the components on the left side kaya bumaliktad ung fire mode stops.

3. sumablay na ung movement ng selector plate.


long shot ung sumasabit ung spring o piston sa loob ng mek.


suggest you dissassemble. look at the fire selector lever components. look at the selector plate. look at the yaw control.

let us know what you find. pics would help too kung hindi mo pa makita ang problema.

nga pala:

komrad jono

Yes, I can't pull the trigger after that to shoot any more.

Thanks for everyones help so far

I need to learn how to disassemble my gun :[ Still noob XD

if you can't pull the trigger, then maybe a combination of the yaw control and the batt.

siguraduhin mong fully charged at maganda ung batt, then, test fire again and let us know what happens.