KymcoForum.com

Scooters - 125 to 300 => Grandvista 250 => Topic started by: robert777 on August 10, 2015, 06:25:23 AM

Title: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: robert777 on August 10, 2015, 06:25:23 AM
anyone kno how to unhook that front plastic guard? got the seat off but that part stuck on the bottom... thx, rob
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: mrbios on August 13, 2015, 04:56:29 AM
Lift the rubber mat there is two screws under there.  The huge screw under the seat must come out too.  I'll post a video link tomorrow.
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: mrbios on August 13, 2015, 06:35:43 PM
Quote from: mrbios on August 13, 2015, 04:56:29 AM
Lift the rubber mat there is two screws under there.  The huge screw under the seat must come out too.  I'll post a video link tomorrow.

This video will show the removal of that area. You can fast forward to about 1 min.

Kymco Carburetor Remove & Reinstall  http://youtu.be/uE3d9QI2m2Y (http://youtu.be/uE3d9QI2m2Y)

http://www.wecandobetter.com/dnload/Scooters/Kymco/ (http://www.wecandobetter.com/dnload/Scooters/Kymco/) - Look for: "Valve_Adjust_Sparkplug.zip"
and Right click and choose Save As.
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: mrbios on August 17, 2015, 07:58:18 PM
When you get it done update the forum on your results.
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: Wamimodo on August 18, 2015, 10:44:24 AM
I will not disappoint after I finished reading.
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: robert777 on November 19, 2015, 09:57:11 AM
that was easy, seems it was a little tight on one side, runs good, still starts a little harder than my agility 125 did.... but seems ok.
Title: Re: trying to do valve adjustment, how to get front of seat plastic guard off?
Post by: mrbios on November 19, 2015, 07:20:43 PM
Quote from: robert777 on November 19, 2015, 09:57:11 AM
that was easy, seems it was a little tight on one side, runs good, still starts a little harder than my agility 125 did.... but seems ok.

The valve that is tight is usually the exhaust valve.  It is generally a myth that valve adjustment affects the performance.  I've done 3 valve adjustments on my scoot and noticed zero difference in starting, mpg, power, idle, etc. 

Low idle: check vacuum lines, a restricted pilot jet causes low / unstable idle.  The idle mixture screw can be adjusted to compensate but it is better to follow the video and clean the pilot jet properly.

Thanks for the update it improves the thread.