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Longevity of Kymco ZX50 (Bug Vibe)

Last post 01-09-2019 03:02 PM by slick. 14 replies.
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  • 09-01-2011 10:16 PM

    Longevity of Kymco ZX50 (Bug Vibe)

    G'day

    I've had this zx50 for about four and a half years and it's done 26,000km. A scooter sales dude suggested that this is a bit unusual and I should look at flicking it off before it starts costing. So, I thought I'd ask the experts here for second and third opinions.

    Major issue I'm having with it is a lack of power — it used to cruise nicely on 65 but recently started struggling to get to 60 on the flat. And it doesn't start as easily either. I'm checking out this and other forums for stuff I might be able to look into myself — but now wondering if it's worth the trouble, or if I'd be just wasting my time.

    Many thanks for any opinions/advice

    d.

  • 09-01-2011 11:42 PM In reply to

    • emil_io
    • Top 100 Contributor
    • Joined on 03-16-2011
    • Melbourne, Victoria
    • Posts 323

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    4 years and 26,000 km on a 50cc Kymco seems like a fair effort to me! Great effort. Although I'm no expert...sounds to me like it might be starting to get a bit tired, but I bet it would keep soldiering on for many more kms!

    One possible resolution, upgrade to a Kymco Agility 125 RS Stick out tongue

    Kymco Like 125

    Vespa PX 200
  • 09-02-2011 11:36 AM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    26,000 wow.. very good.. topend rebuild will fix the lack of power problem.. Alot cheaper than buying a new scooter..

    Scooters and Buggies
  • 09-02-2011 12:20 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

     Have you done the belt & rollers ?

  • 09-02-2011 09:39 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    OK – thanks guys. topend rebuild, belt and rollers, etc. fantastic news for a guy who knows how to change a spark plug.

    I'm preparing myself for a steep learning curve, because I can't afford an upgrade and I can't afford to be without wheels. So, my only option is to learn how to be a scooter mechanic. I'm going to start with the carb this weekend, as it's not idling properly either.

    Thanks for the feedback. It's a starting point.

    d.

     

     

  • 09-02-2011 10:02 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

     Think there is a workshop manual for it through this site Big Smile http://www.advrider.com/forums/showthread.php?t=145512

  • 09-04-2011 07:52 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    Thanks pyrah. I downloaded that a couple of years back for some reson. Definitely wouldn't be trying anything without it.

    I got a chance to check out the carburetor today and it looks good — clean as. I'm assuming that if there was any build-up to clean out it would be visible. Is that right? I was also concerned there could be water in the fuel because I used to fill up at shell before I realised they use ethanol. Anyway, the fuel I drained was all good. And the scoot now idles properly too.

    Next, I guess, is belt and rollers. I'm looking for flat spots on the rollers and... what... with the belt?

    Glenn mentioned a topend rebuild. Now that sounds like an experts-only job with specialist tools. Or is it as simple buying a new cylinder kit and just whacking in?

    As you can see, I've got no idea, so any guidance is most gratefully accepted.

    But everything I've been reading suggests the Kymco is a sturdy little unit, so I'm hoping to stick with it a bit longer.

    Thanks

    d.

  • 09-04-2011 09:30 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

     According to Haynes the service limit on the belt is 17 mm width & the rollers service limit 12.4 mm

  • 11-07-2011 08:28 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    Thanks Pyrah and Glenn for your advice — you certainly pointed me in the right direction.

    I ended up taking it to Rado at Freedom On 2 Wheels to service it. This guy totally rocks. Within that hour he correctly diagnosed both problems. The starting problem was a stuffed regulator and the power problem was tired piston rings. The regulator I could do myself and Rado showed me how to replace the piston today. Now everything is sweet again.

    I'm still going to have a look at the rollers once I get a variator locking tool that fits.

    Rado recently did a bit of work on a zx50 with 47,000 on the clock — so there might be a bit of life left in my little scoot yet.

    Have a good one.

    d.

  • 12-08-2011 09:56 PM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    I finally changed the rollers on the weekend. I couldn't find a variator locking tool to fit — so I made my own. It's 5mm galvanised steel — started life as a post footing — bit of a hack job but works like a charm. The locking nut was REALLY tight — so I ended up using a candle to melt the loctite out.

    The original rollers had BIG flat spots on them — which explains why it was really bogged down at low revs.
    Repaced them with 8gr Malossi's. Now I've got smooth acceleration all the way.

    Pretty good job for a mechanically challenged guy.

    d.

  • 12-09-2011 12:43 AM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

     Looks good Yes

  • 11-06-2012 10:16 AM In reply to

    Re: Longevity of Kymco ZX50 (Bug Vibe)

     

    Hi.. sorry to bump this but just needed to state a couple of things...

    I have a Kymco ZX50 which has only done 4500km. My friend has one the same year (2008) which has done 30,000km!!!  and its still going fine as! He puts it down to not thrashing it (30-50kph), and regular checks every couple of thousand k's. Theyre very well built.

  • 01-08-2019 07:22 PM In reply to

    • slick
    • Not Ranked
    • Joined on 10-31-2010
    • Posts 3

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    A friend of mine got ~80,000 km out of his Kymco Bug Vibe before the transmission went.

    :-)

  • 01-09-2019 03:02 PM In reply to

    • slick
    • Not Ranked
    • Joined on 10-31-2010
    • Posts 3

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    Dwayne Smith:

    Major issue I'm having with it is a lack of power — it used to cruise nicely on 65 but recently started struggling to get to 60 on the flat. And it doesn't start as easily either. I'm checking out this and other forums for stuff I might be able to look into myself — but now wondering if it's worth the trouble, or if I'd be just wasting my time.

    Many thanks for any opinions/advice

    Here's one suggestion to increase the power without a total rebuild:

    http://www.xcelplus.com.au/benefits.htm

    "I am reviewing the 2 stroke additive and it is amazing. I noticed within 30 minutes the power of the scooter (Silver Kymco Bug Vibe ZX50 2008 49 cc ~80,000 km) increased significantly and it got better fuel economy. It just wanted to go all the time. Had to drop the idle speed back 3 times to get it perfect... but saving fuel is the best part."

     

     

  • 01-09-2019 03:02 PM In reply to

    • slick
    • Not Ranked
    • Joined on 10-31-2010
    • Posts 3

    Re: Longevity of Kymco ZX50 (Bug Vibe)

    Dwayne Smith:

    Major issue I'm having with it is a lack of power — it used to cruise nicely on 65 but recently started struggling to get to 60 on the flat. And it doesn't start as easily either. I'm checking out this and other forums for stuff I might be able to look into myself — but now wondering if it's worth the trouble, or if I'd be just wasting my time.

    Many thanks for any opinions/advice

    Here's one suggestion to increase the power without a total rebuild:

    “I am reviewing the Xcelplus 2 stroke Treatment and it is amazing. I noticed within 30 minutes the power of the scooter (Silver Kymco Bug Vibe ZX50 2008 49 cc ~80,000 km) increased significantly and it got better fuel economy. It just wanted to go all the time. Had to drop the idle speed back 3 times to get it perfect... but saving fuel is the best part.”

    Borrowed the quote from here:

    http://www.xcelplus.com.au/benefits.htm 

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