Question about 1988 Aprilia AF1 125 Sintesi

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Non ruining AF1

How to get my non ruining bike alive again

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You will need to put a good fire extinguisher where it is real handy because the things you are doing can spark backfire and burn. Check the oil level and if it is low add some. If it, the oil, looks white or funny colored. Drain it and put in fresh. If it's full and looks OK, don't worry about it. We will change it once we get the engine started,,,

Posted on Nov 10, 2008


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I have a problem with the bike starting, i have spark and its fueling. occasionaly it will fire up but wont tick over. it will keep running if the revs are held at about 2000rpm, if revs are increased to...

Hi, J_brake_est8 and the usual suspects are:
1. Enrichner system plugged, not properly functioning or improperly operated.
2. Fuel overflow.
3. Restricted fuel supply.
4. Plugged slow jet or passages.
5. Inlet system air leak.
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

Sep 02, 2011 | 1990 Aprilia AF1 125 Futura

1 Answer

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...

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

Mar 25, 2011 | 1990 Aprilia AF1 125 Futura

1 Answer

Can not find parts for my bike

Hi, Try bob wright motorcycles they are based in western-super-mare but offer mail order , type in bobwrightmotorcycles on a google search.

Jan 13, 2010 | 1989 Aprilia AF1 125 Sintesi

1 Answer

Loss of power pulling away in first gear. have to rev nuts off it. any ideas?

Howdy: It sounds like the 1/3 of the needle jet is not working . Could be clogged. If the bike run good in 3/4 to full throttle then for syre it's the jet. Does it idle? Was the bike not ridden for a long peroid? Also check the input air! Need a little more info. Did this problem start all at once or slowly get worse? Doug

Dec 09, 2009 | 1990 Aprilia AF1 125 Sintesi

1 Answer

Put new br10 plug in ride a mile stop bike with not start agin till new plug put in again

unfortunately these things happen and plugs just die out in rare occassions..

Aug 09, 2009 | 1992 Aprilia AF1 125 Futura

1 Answer

Spark plugs changed and bike will not start.

Sounds like you still have some wires crossed up somewhere. Should be 2 from one coil on 1 and 4, and the 2 from the other coil should be 2 and 3.

Jul 13, 2009 | 2005 Suzuki RM-Z 450

1 Answer

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

Dec 01, 2008 | 1990 Aprilia AF1 125 Sintesi

1 Answer

Help with my aprilia AF1 125?

Congratulations. You have just purchased a very high performance 2 stroke 125cc from a very talented Italian manufacturer. A two stroke engine needs 2T oil to be mixed with the fuel before it is fed into the engine. This is a cumbersome job and one has to get the ratio just right. So in order to make the job easier you have two tanks. 1) The regular fuel tank & 2) A small capacity 2T oil tank (made of plastic mostly) which is hidden behind a side panel. In order to give a regular dose of 2T oil there is a tiny oil pump attached to the side of the engine. This oil pump has to be actuated simultaneously when the carb slide is actuated. Hence the banjo. So now you know why the throttle cable splits into 2. One goes to the carburator and other to the oil pump. Good luck and enjoy your bike sensibly.,,,

Nov 10, 2008 | 1989 Aprilia AF1 125 Sintesi

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