Aprilia climber

Hi that looks not good.

I respond in English, I can not speak or write Spanish, I do understand some … but writing …

Anyway the ignition is NOT original to an air cooled TXR it is something different it seems to me you have an ignition module of the Climber.

Check out the timing, it should be after the maintaince book fpor the 277cc model 2,5mm before TDC, (so really early)!
(If it is the 240cc model just 2,4mm)

The other problems of the engine,

1st (Disc): If you have problems with the disc you can hear that then the disk is sliding against the case making bad noise.

2nd (Weird Plumbing): Only the TXR has a plumbing (tubes) attached to the crank case underneath the engine and then through a bottle connected to the carb and the air filter. This item drains the crank case from gasoline as the older engine has no drain screw attached as the earlier models.

If the tubes are damaged you simply have a hole in the crank case and a bad running engine,
If the «plumbing» has been taken away the reminding hole or tube might not be sealed.
I still have that unit and replaced the tubes it now works great in my experience

3rd (Air filter and hose to carburator) The airfilter might be clogged also the hose to the carburator damaged, it is very importand to have an filterfoam that is very light oiled and a filterfoam is in very good state allowing much air to go through.
You might replace the foam, a bit tricky but very important. Also any cracks in the hose should be sealed.

4th (Rubber boot to engine), that rubber can have deeper cracks which can too lead to additional air or extra gear oil thus should be replaced if old.

5th Old style plugs without unbuild resistor are also important, the engines run better with them.

All in All a great bike, when it runs one of the most underrated air cooled monos, I don’t know nay bike air cooled mono bike with better suspension an smoother but still super torquey and powerfull engine, surplus the engine is too super quit, actually the quitest trials bike I have.

The Plumbing unit:

The redone Airfilter:

My TXR: