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Messages - JJJoseph

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1
Bet & Win 250 / Re: Kymco bet and win 250 New carb?
« on: May 03, 2025, 08:25:34 AM »
It won't run with a defective bystarter.  Just buy another one - they're not expensive. Less than 10 bucks with free shipping. Don't be cheap! Chances are it'll run OK without any other work.  That's the genius of these carbs!  (Of course, a careful cleaning as suggested by others is a good idea, too). 

2
Like 50 2T / Re: Charging system issues, bad stator?
« on: April 28, 2025, 06:34:38 AM »
There's dozens of stators that fit, some with 2 wires, some with 3.  It's such a pain to sort them out that I just buy the correct Kymco stator and skip the problems. Same with the ignition ECM.

3
Technical | How To / Re: Kymco carbs and Kymco jets
« on: April 27, 2025, 08:49:22 PM »
Quote from: Ruffus on April 27, 2025, 12:09:02 PM
IMHO, main on the pic is jet stock with jet in it
-jet (red arrow) should be M5 thread and come out to be changed
-hold against with a 9mm ring spanner and take the main jet out with a sturdy flat screwdriver
You're right! I got out my magnifiers  and vice-grips and did as suggested. Up to this, my Kymcos have always been M4 jets.  This thing requires a 7mm open-end spanner and M5 jets. A box-end spanner doesn't fit. Never, until now, have I ever needed a 7mm spanner for anything.  So I'm off to buy a spanner and some jets!  Thanks to all for good info:-)

4
Xciting 500 / Re: The battery light is on
« on: April 27, 2025, 07:17:39 AM »
Have you read thru the manual?  Kymcos tell you stuff via the indicator lights.  Such as "Time to change the oil", etc.  No two models flash the same messages.

5
Technical | How To / Re: Kymco carbs and Kymco jets
« on: April 27, 2025, 07:02:34 AM »
And here's a view of the Kymco 20mm carb with its trousers off.  The reason I'm fussing with it is because it's really fast - about 20kph faster than the Keihin, winding up to 9500rpm. I only get about 7500rpm out of the more lady-like Keihin.

6
Technical | How To / Re: Kymco carbs and Kymco jets
« on: April 27, 2025, 05:59:46 AM »
Thanks for the replies.  What you say has largely been my experience - until I opened my Sento 20mm Kymco carb.  And this is what I found: I've never seen these jets in any known parts bin!  PS: No idea why the image goes upside-down!

7
Technical | How To / Kymco carbs and Kymco jets
« on: April 21, 2025, 09:42:26 PM »
Has anyone here managed to source jets for Kymco carburetors?  My Kymco came with a 20mm Kymco carb that's an exact duplicate of a Keihin CVK carb, with one major difference: the jets are not Keihin jets.  So it can't be tuned with standard Keihin jets.  It starts and runs OK with the Kymco clone carb, but idles like a lawn-mower at 3000rpm.  At slower speeds it misfires and stalls.  It would be any easy fix if I could find after-markets jets in different sizes.  Kymco doesn't offer jets.  The only remedy is to swap the Kymco carb for a genuine Keihin - which is expensive!

Any ideas?


8
General Discussion / Re: Better to order scooter components sooner than later ?
« on: April 21, 2025, 07:50:29 AM »
Most Kymcos are made in Taiwan, so tariffs are in a reasonable range, 5% to 30%.  For reasons I can't explain, Kymco parts on Amazon are still cheap - with free shipping in many cases.  Many small Kymcos and ATVs use Kawasaki-brand parts made by Kymco. Still manageable. I don't think you need to trade in your Kymco on a Tesla just yet!

9
Technical | How To / Re: Camshafts
« on: April 21, 2025, 07:35:31 AM »
Timing is fixed.  You'd have to regrind the camshaft to change the timing.  Realistically, you'd have to buy a replacement cam, but they all have standard fixed timing, so it's an unlikely remedy.  Some GY-6 engines can use an ECM module with variable spark timing, but they don't work on all GY-6's.  You'd have to experiment.

10
Eye Candy | Videos and Pics / Re: new scooters
« on: April 21, 2025, 07:28:19 AM »
These machines are so ridiculously overdone that they only belong in sci-fi movies!  Completely pointless!  Thanks for the preview - saves me the effort of visiting the dealer!

Now, while on a good rant on this topic, I needed an air filter for my 2009 Kymco, and was fussing about it because the bike is older, and parts are scarce since there's no dealers any more.  Should I trade it in or try a little harder to find parts? So I went on Amazon and did a search, and there was the filter! I placed the order and it arrived  two days later with free shipping.  Unbelievable!  Yet another reason to keep my 16-yr old Kymco for a while longer!

11
General Discussion / Re: Sento 50 underseat security code
« on: April 18, 2025, 06:21:48 AM »
Quote from: ozjeff on March 03, 2025, 12:54:00 PM
Thanks appreciate your advice. Will just keep it unplugged and keep working on the no spark issue.

Of course, the ignition key still works as it should.  The rest of it is just rubbish for the recycling bin.

12
Technical | How To / Re: Camshafts
« on: April 18, 2025, 06:16:37 AM »
Quote from: Brrapp on April 04, 2025, 07:43:50 AM
and thats useless without timing.


FWIW, GY6 timing is fixed,  so the topic might be moot :-)

13
General Discussion / Re: Finding part numbers and specs with sizes for my grand dink 250
« on: March 03, 2025, 08:48:53 AM »
There's parts catalogs all over the place.  I use AZ Motors simply because every Kymco is listed.  But it's in French.  Another option is that a lot of Kawasakis and Polaris machines are re-badged Kymcos.   I occasionally get Kymco parts from the local Kawasaki dealer, although he denies that Kawasaki ATVs are made by Kymco.  Just don't pay attention to all the whining that goes on at the parts counter. There may be more badge-variants out there.

14
General Discussion / Re: Sento 50 underseat security code
« on: March 03, 2025, 08:40:05 AM »
Just unplug it and it'll start and run normally. The connector is under the seat pan.  Remove the pan, unplug the device and throw it away.  That's all there is to it.

15
Agility 50 / Re: Check engine starts blinking 4 times while driving
« on: January 14, 2025, 09:33:10 AM »
Quote from: spindel on October 31, 2024, 07:54:57 AM
Will check that idea by removing battery.

But, looks like TPS honestly. The indicator starts blinking after sometime, specifically when going for some time with full gas. It can happen the light won't go off at all if I didn't open throttle fully.

Still sounds like the oil change light.  You have to turn it off with the hidden toggle.

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