I was reading through the owners manual on my 08 and it has very specific instructions about changing the plug. Not to tighten it too much or too little as it will cause damage both ways. Can anyone give me some suggestions on how they do theres? I want to make sure I dont damage anything.

just tighten the new plug down enough when it hits the bottom of the threads.

Honestly there is only one way to learn this sort of craft. . . and that is to do it.

do you have any buddies that work on there own machines that you could ask for assistance?

you basically want to inspect the new plug to make sure it is in good shape. . . . .and then gap it. . . .then screw it in till you run out of thread. then just put your socket wrench on it and tighten it down a 1/4 turn or so. .




if it is too loose you can always retighten it. . .. if its too tight and you ruin the threads well .. . . . your in for some bigger problems.



good luck to you. . . . .


Chris

ya he pretty much said everything. but it is important that you screw it in by hand and if you feel resistance stop and put it back in, if you start to get major resistance about 1 to 2 turns in it usually means your not sitting in the threads and could strip it. dont get all worried and scared about this. its one of those things that is very easy to do and very hard to screw up on(if you listen to us) but if you do like chris and i said, your set

a little anti-seize on the spark plug threads isnt a bad idea either

My quad is an 06 and probably still has the stock plug, do you think I need to change it. Or maybe just take it out and inspect it and see if it is still good. Are there better spark plugs than stock if you do replace them or are they typically replaced by another stock plug?

if it starts just leave it alone.

I just was at the local shop today to pick up my cylinder and a new piston for my 300ex and got oil and filters for my 450. I went to get a plug. And they didnt have it on stock and said that it was a rather pricy plug. ( around 17.00 ) although I say if you are going to pull it out you might as well just replace it. and then you know it is done and youll know how old it is.


oh yeah and the anti sieze on the threads is a great idea and a must.



Chris

My experience is that it would be quite difficult to get the threads crossed on this machine since it sits at the bottom of a long narrow tube, and your plug socket will just barely fit in it. So not much chance of getting it in at an angle.

If your looking for a new plug bring your old one to Auto Zone they can cross reference it and you will save a good 10 bucks over the dealer. and you will get more variety

i still have my original plug in my 04 and it works fine if your going through plugs u have an air mixture problem

I have an 08 and i change it about once a month to keep maximum performance..... but i also race mx and every little bit helps..... also these are iridium plugs and they are not interchangeable from my knowledge.... they wont run as good on a regular plug FYI

So it seems that if it starts, leave it alone correct? It is not recommended to change plugs every or every other season?

i have a 05 and never changed the spark plug. It started with only one or two kicks until i blow it up.