Aprlia SR50 Fuel Pump Assembling and Disassembling + Tips

How to Assembling and Disassembling Aprilia SR50 Fuel Pump quick, easy and with little effort.

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[Farseer]

People like you - who make detailed, slow, and clear repair guides - should be awarded with a Nobel prize. Thank you so much for helping us!

[dawinksta]

Any idea where to buy replacement little connecting rods?

[fernandolatorrecaballero]

Yo estoy reparando una igual de una gilera pues usan la misma, ,
Para poder destaparla he usado coca cola, , parecera de locos pero la coca cola es bastante buena para hacerlo y es mas rapida, , gracias por el video pues nunca habia tocado motos con injeccion y me ha venido muy bien, ,

[Joe-Marco]

Can somebody tell me the general location of the sr50 reclaimer/altenater please.
EDIT 2009 model

[steelosm]

Nice clear video but what pump condition are you fixing?

[Vertolot]

So, I have this 2 decades old SR50 Ditech in the corner of my garage from my youth. Sitting there all dusty, was not run for 5+ years (yes, with gas from that time in the

And aproaching 40, I am like - I need to try to start it, and ride it or sell it. So, I charge that old battery, mix in some new fuel, shake the scooter hard and try starting it, starter running really strong, but no go. Some few puffs but nothing.

Next day, I feel like trying again. Turn the key, I am looking at that check ign light and feeling like there was a Damn, it is not priming. So reading up on forums, doing the diagnostics, 3 errors, one of them nr.14, fuel pump. So i take it off, looks good, blow some air in it, try starting, but nothing. No priming. So I end up reading that you can usually repair it. Since the motor was not running, i thought, either the motor is dead (or those funny motor contacts) or the pump is seazed from that 5+ years old fuel, maybe...

Some advice here, you can remove the small c clip first, put the whole pump in a cotton work glove, and with a rubber nozzle, press against and blow air in the inlet, the small cap will shoot out into the glove. Now, remove the large c clip, with your thumb press hard on the now missing small c clip lid, and again, blow out the motor ingo a glove (or bag or whatever, just catch it softly and not shoot it through some window or into wall).

And shure, the motor was not running, but looks real good, so cleaned the contacts, bent them a tiny bit, so they press against the large lid contacts harder, and the motor is running now.

And Now, I just have the piston removed (without breaking it) and everything cleaned, except it looks like there will be some debree left in the inlet check valve. So, I left it soak in wd40 to try to clean it, hopefully I can, as, it seems I got everything else working real good.

Thanks for posting this, as it helped me not break the pump

[hobbygaertner]

What is the problem with the pumps? Is it just the O-rings that are becoming porous and should be replaced? Replacement pumps are really expensive

[Bearded_Tall_Guy]

Do you know of there's a rebuild kit for the pump? I got a dead pump but the motor in it works.

[robertparker]

I'm getting a 2006 SR50 with a bad fuel pump. Is it the connection what goes bad in them?

[chowmurphy]

Do they sell new motors? Or is the fuel pump just a complete unit?

[arnoldliptak]

If the pump is running but is not making enough pressure, than is it possible that the small piston is faulty? If yes, than is it replaceble?

[nicusecan]

Myne got broked the con rod inside of the pump 🙄

[poweroftrolling]

Have u tested? And what are the result's?