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I checked the plug again and it looks a little rich definitely not lean.  I turned the low speed air screw one quarter turn more rich and now everything seems very good.

I pulled the variator off and replaced the stock 8.5 gram roller with 6 gram rollers and now it accelerates better out of intersections and slow speed corners and goes up the hills around my house anywhere from 2 to 5 mph faster.

I'm liking the scoot.  This fall I can budget for a better exhaust and then I'll be super liking it. Right now around town I regularly am riding at 42 -45 mph on the speedo, about 35-40 actual.  That's exactly what I need.

   Proud of myself for thinking of a test since the plug color/condition and riding results are giving mixed messages.

I covered about 20% of the intake snorkel with electrical tape.  I figured if the scoot was running lean, this would help it run a little better and if the scooter was running rich, this would make it run a lot worse.

It ran quite a bit better.  Picked up a couple of mile per hour even coming up small hills.  Did some long full throttle slightly uphill runs to make sure it was good an hot and it ran strong.

So that means it is running lean and maybe just cleaning the carb will fix it.  At worst, I'll have to buy a larger jet.


Was only hitting about 42 mph on the flat. WIth the tape on I was hitting 50 on a very slight downhill and 42 on a slight uphill.  THink I'll like the speed once it's jetted properly.

Then I can add a pipe and upgrade the variator. 
 

I've run another tank of gas through it and it keeps running a bit better.  Adjusted the idle mixture and speed and that's helped low speed performance.

Still need to clean the carb but can tell the Seafoam is gradually helping.

Thought it was running better.  Yesterday on my commute home it died three times.  It was very hot out. The first time it died was after sitting idling in traffic for several minutes.  When I gave it gas it just stopped.  Had to choke it to get it restarted.

Second time was after coming up a hill for about a quarter mile I rolled up to a stop light and let off the gas and then back on as the light turned green and it died again.

Did the same thing one more time as I cruised through my neighborhood.  I would let off the gas as I went through an intersection and then when I throttled back up it died.

It was about 90 degrees out so it was hot.  It ran fine in the cool morning on the way to work.

I pulled the plug today and after less than 100 miles on it it has some carbon build up on it.  Half of it is pretty white and half of it has black on it. 

Driving symptoms seem to be pointing to rich running.  Just haven't had time to open the carb up yet and see what I've got.  Going to have to stop driving it until I get it fixed.  Unsafe to have it die when I'm going through an intersection.

I've run another tank of gas through it and it keeps running a bit better.  Adjusted the idle mixture and speed and that's helped low speed performance.

Still need to clean the carb but can tell the Seafoam is gradually helping.

I put a new spark plug in it and it helped it run just a tiny bit better.  Did the plug chop exercise and the plug is absolutely white. It's pretty lean.  Will take the carb apart and clean it and try again.  If that doesn't work, I'll get a bigger jet.

Funny, I live in Denver and would have expected it to be rich if anything, but the symptoms pointed to lean.

The s filter is actually built onto the petcock, on top of it is a little mesh screen. Pretty good design and unless your bike has seen really nasty gas it should be aok.

Checked the filter in the petcock. It was fine, nothing in it and fuel is flowing strong into the carb.

I also checked the spark plug to see if it was fouled and for rich/lean condition.  It's a pretty good tan/brown. Could be slightly rich.

So I guess I'll need to take the carb off and clean it out. Probably just varnished up a little.  More to come.

Is it just the width of the belt that determines replacement or does age matter?  I just bought a 2007 People that only has 1000 miles on it, but it is 8 years old.