Question about 1990 Aprilia AF1 125 Futura

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My 1990 aprilia af1 futura seems to splutter and there is a loss of power at high revs. this happens between about 8500 & 10,000 revs ,when the red line is @ 11,500 through 13,000 . the bike is a full power 125 and has been fully de-restricted and i have just replaced the coil,clean'd out the carb jets ect. but still no joy any ideas. :) Yours sincerely Rob

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  • Aprilia Master
  • 43,848 Answers

Hi, Tanita and the usual suspects are:
1. Severely drained or faulty battery.
2. Faulty regulator/rectifier or high output coil.
3. Faulty power valve, solenoid or installation.
4. Clogged air filter or exhaust.
5. Cracked or incorrect float level.
6. Float needle is not seating.
7. Faulty reed valve.
For more information about your question please visit the website below. Good luck and have a nice day.
841 af1 rs manual zip 805 KB

Posted on Oct 26, 2015


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Posted on Jan 02, 2017

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SOURCE: chain adjustment on af1 sintesi

loosen the axel a little enough to move the wheel rearward now tighten the adjusters the same number of turns 6 flats is 1turn now adjust wheel rearward get about 1 inch deflection up and down with you on the bike hope this helps

Posted on Jan 01, 2009

  • 408 Answers

SOURCE: I want to buy 1990 aprilia af1 it

It has the same engine with Mitto but that engine is more fragile than that of the CBR's.
Don't buy it if you ask me.

Posted on Jul 03, 2009

  • 9 Answers

SOURCE: de-restrict an aprilia rs 125

Hate to disagree with tina783, but you may have restrictions in place, there is two on the aprilia rs 125. if your on a L plate then the bike should be restricted to 11.5w of power, which is about 15 bhp, when it's de-restricted should be around 34bhp. First is the power valve or a RAVE Valve as some people call it, have you got one? located on the front of the cylinder body, above the exhaust. some times the body of the power valve is there, but there is a blanking plate is underneath it. If the body of the power valve is missing, then its a blanking plate. need to get a power valve and the control unit and the solenoid, fitting is easy look around the net and you'll find one. The next one is the emissions restriction, which is in place due to italy have a real hard on about thier air. The CDI at the back of the back of the bike needs to removed and then if you look at one side you will see a rubber sealant has been used to fill in one side. You need to dig that out and snap a little piece of the circuit board and then refill the hole with a rubber sealant. try to search the net for a how to do on this you need to look at the pics and see what part of the board needs snapping, don't go blindly into this other wise you will kill the CDI. the bike then will act alot more smoothly in the lower end revs.

Posted on Aug 02, 2009

  • 6966 Answers

SOURCE: aprilia af1 125 sintesi, carb settings, what are

Hi and welcome to FixYa,

Jet size would depend which carb is installed, a Dellorto 34mm?

Initially, check the sparkplug tip colors. If very light brown to almost whitish, then lean mix; too much air, too little gas. Try raising the needle if if has notches and moving the e-clip. If fixed, use small thin washers. The basic idea is to make the needle rise early on throttle movement.

If an aftermarket open breather air filter is installed, then it would be causing the lean mix, too much air. Restrict the filter by adding temporarily upholstery foam to experiment at which thickness the flatspot would disappear.

Good luck and thank you for asking FixYa. Happy Holidays.

Posted on Dec 17, 2009

  • 88 Answers

SOURCE: de-restricting aprilia rs 125 (jetting)

hi not putting you off but when i fitted a arrow exhaust system and power valve. i had great power. but i had to rebuild the engine every 800 - 1000 mls. regards

Posted on Jan 31, 2010

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1 Answer

Recently my bike (rs125 Futura), seems to lack power when revd, but there is alot of white smoke coming out the exhaust, but when you hold the choke IN it runs fine and revs fine so is it dumping fuel????...

Hi, Anonymous and the usual suspects are:
1. Throttle cables misaligned or misrouted.
2. Damaged or restricted fuel tank venting system.
3. Inlet system air leak.
4. Vacuum piston malfunction.
5. Accelerator pump leaking or no output.
6. Plugged bowl vent.
7. Fuel level in bowl too low.
8. Restricted fuel supply passages.
9. Plugged jets or passages.
10. Worn or damaged needle or needle jet.
12. The enricher valve not seated or leaking.
For more information about your issue please visit the websites below. Good luck and have a nice day.
841 af1 rs manual zip 805 KB

Nov 02, 2011 | 1990 Aprilia AF1 125 Futura

2 Answers

I want to buy 1990 aprilia af1 it faster than honda nsr 125 or cagiva mito?

It has the same engine with Mitto but that engine is more fragile than that of the CBR's.
Don't buy it if you ask me.

Jul 03, 2009 | 1990 Aprilia AF1 125 Futura

1 Answer

Not warming up or keeping tickover keeps cutting out althoughnot

carb needs a clean , try fireing a bit of injector cleaner into the carb (remove airfilter and spray a little bit at a time !! then try again , if still no good the carb will need to come off and be cleaned ,
hope this helps
kind regards

Mar 18, 2009 | 1990 Aprilia AF1 125 Futura

1 Answer

Af1 futura aprilia 1992 125 cc exhaust

Hi, Tiptop_1 for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix/test or parts inquiry. If necessary transport your vehicle to the dealer or shop and have a professional technician take it for a test drive, if it is in running condition, and give you a written estimate of repairs and answer any specific questions you may have about your issue. For more information about your issue please visit the website below. Good luck and have a nice day. Aprilia Motorcycle parts Aprilia Motorcycle spares UK USA OEM Aprilia...
841 af1 rs manual zip 805 KB

Mar 06, 2009 | 1992 Aprilia AF1 125 Futura

1 Answer

Oil in my air filter

so I decided to replace the plugs and noticed this. I haven't noticed this before. And why would I have this issue? Please can someone help me with this. JohnThis is a common problem with aprilia Perhaps it's common on large capacity V-Twins. Check the crankcase ventilation hoses/system,

Nov 10, 2008 | 1990 Aprilia AF1 125 Futura

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