MXU 500 Spark Plug Location ?

[BJ]

Hi guys I just bought a MXU 500 2 weeks and thinking I should change the spark plug but I can't seem to find it. Wondering what side of the machine I should be looking for it?
                                                                           Thanks
                                                                               BJ

[aaron8]

You have to remove the fuel tank on this model.

[BJ]

You have to remove the fuel tank on this model.

             Thanks for the reply Aaron8. Hope the spark plug is the problem with it not starting.
                                                                      Happy New Year
                                                                                   BJ

[aaron8]

If the fuel pump is kicking on and has gas in the tank it will probably be your spark plug.

Short trips with the machine can cause this problem, although the 500cc is their best starting engine.

Tank Removal

-remove seat
-remove both side panels
-remove the small cover under the speedometer
-remove plastic around the tank

Take your time and keep track of all the parts. The front two tank bolts are the hardest to remove and install. Also, the clip for the fuel line can be tricky if you have never messed with one. (Do not break this piece!) Push (hands and fingers only) the white 90* piece in and then press down on the black retaining clip. Keep pressure on the black clip and pull the connector off. Wear glasses so you do not get gas in your eyes (there may still be some pressure in the line). 

[Bratman2]

I replaced the sparkplug earlier this year tuning up my grandson's Mongoose 90. It progressively began running like crap. Hard to start, missing, low on power. Getting older I guess, I thought well I just replaced the sparkplug recently with the proper NGK. So I looked every where testing everything I could. Only to replace the NGK nearly last and fixing it. That is the first bad NGK sparkplug I have ever purchased that was bad so it could be. Good luck! I might start buying Nippon Denso if this ever happens again.