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Scooters - 125 to 300 => Downtown 300 => Topic started by: espresso on March 29, 2014, 02:39:46 PM

Title: removing sparkplug on downtown 300
Post by: espresso on March 29, 2014, 02:39:46 PM

hello everyone,  i have the seat off and have full view of the inside of scooter.. first of all where is the spark plug? it seems like its on the left side of the engine, if it is, does anyone have any tips on how to remove the black cap? ii cant get a solid pull on it.. its soo narrow in there...i cant believe something soo simple like removing sparkplug is such a big task on this scooter? dont get me wrong, absolutely love the bike but geeze

Title: Re: removing sparkplug on downtown 300
Post by: CROSSBOLT on March 29, 2014, 03:18:36 PM

The plug is on the left side of the engine. Rotate the plug cap a few degrees clockwise and counterclockwise around the plug. Then pull the cap off by rotating while pulling. Not only is the "rubber" seal nearly welded to the plug insulator, the electrical connection has a mechanical detent spring that pushes on the threads of the plug terminal. Makes it tough.

Karl

Title: Re: removing sparkplug on downtown 300
Post by: Joe7911 on March 29, 2014, 07:00:17 PM

I change my spark plug going from the left side. Put bike on center stand, lay down right behind the stand and you can get one hand in with a swivel and ratchet. Its not that hard but beats having to take everything apart.
Make sure you start the new one by hand and you will also need to screw off the cap on the plug.
I use Iridium NGK and get great results.

Title: Re: removing sparkplug on downtown 300
Post by: CROSSBOLT on March 30, 2014, 08:55:39 PM

What Joe said.

Karl

Title: Re: removing sparkplug on downtown 300
Post by: espresso on March 31, 2014, 06:12:25 PM

thanks guys, mission accomplised!!   :D

Title: Re: removing sparkplug on downtown 300
Post by: sklnzl on April 01, 2014, 12:40:02 PM

Hi Joe7911 , I wonder what performance enhancement you get with iridium spark plug vs stock ? ???