Question about 1999 Aprilia RS 125 Extrema

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Aprilia RS125 Help


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  • mickhenn Feb 10, 2009

    bike will start with electric start, will tick over but then cuts out. Have had -battery checked on several occasions and am aware that I should run it for about 3miles to recharge the battery. Cant even do that now though as it wont run for long enough for me to pull off the drive. It also sounds funny when running - not the normal smooth but like a chugging sound. Really would appreciate some help on this one to save my legs the 40 minute walk to work. Cheers



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Ive just bought a 2000 model RS 125 but my knowledge of bikes is pretty limited :/ The bike was running fine for a week with no problems at all but then the electric start doesnt want to work. I went through the manual and tried a couple of things (recharged the battery checked fuses cleaned spark plug etc) After I did this I still didnt have any luck but the electric start sounded abit more promising. I gave it another couple of goes and it started but when I let the throttle off the engine died and Im back to square 1. Anyone have any ideas about what could be the problem? I was talking to a friend and he said that I need to make sure that there is power going to the motor. He mentioned using a voltmeter to see if there was power going into it. He said that if there was no power then it would need a new electric start but if there was then I would need something else but I cant think what? Does this sound right to anyone?ou'll be able to tell if the ignition system is okay if there's a spark at the plug against the head with it removed when you kick it over (is there a kickstart lever on the bike?)/spin it over with the electric start. You could try bump starting it to see whether its just the electric starter motor or the ignition system itself that's the problem. If you do have a good spark then the bike should start with a bump push start/off the kicker (does it have one?)then you'll know whether the starter is the problem. My bike's kick-start only though so I'm no expert on starting Aprilia RS125's...Good luck. Don't waste money on new parts until you're sure of the problem though.,,,

Posted on Nov 10, 2008


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Posted on Jan 02, 2017

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SOURCE: Fuel tap

The fuel tap is located on the left hand side of the tank, just about where your left knee is. Turn fully anti-clockwise is off, from there turn half way, pointing up is on, and fully turned clockwise is fuel reserve. not much in the reserve but enough to get home or petrol station.

Posted on Aug 02, 2009

  • 3567 Answers

SOURCE: after changing the gearbox oil on my aprilia

Dump the special oil and go back to 10w40 motor oil. The manufacturer does not recommend any "special" oils be used. They can cause the clutch friction disks to swell among other problems like you currently are having. If possible, stick with the name brands; Shell, Mobil, Pennzoil, Quaker State, etc.. It may take awhile to rid the bike of the synthetic oil but get it out of the gearbox as soon as possible.

Please take a moment to rate this answer. Thanks Tim.

Posted on May 04, 2009

  • 5 Answers

SOURCE: drilling a 2008 aprilia rs125 cdi unit

when you look at the cdi you should se a recess in the corner just a small little recess , enough for a small drill bit to fit , drill the small nipple located in the recess
and i am no expert , just persistent at researching the net

Posted on Jul 18, 2009

  • 4 Answers


they can be a bit touchy on gears start the bike in first holding the clutch down so that you dont jolt forward lol and try and put it in nutaral but only move the gear leaver a slight bit upwards if no luck then put it into second and try the other way by putting it down only slightly. if nothing then you could do what i had to do and ajust the gear leaver nut by taking the leaver of and moving it anti clockwise a few notches and make sure it gose back on the teeth or you risk weering them down give that a shot. if nothing let me know

Posted on Oct 28, 2009

  • 1 Answer

SOURCE: How do I reset service spaner icon on my aprilia

hi, if you hold in the small button on your left handle and turn the key in the bike to turn it on, do this about four times and be sure to hold the button for 10 sec each time.

i had to do this on my rs 125 and it works!!!!!!

Posted on Feb 03, 2010

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