Wednesday, January 21, 2015

Removing KTM 690 Enduro R spark plugs

Now usually removing spark plugs is a two step deal. 1. disconnect spark plug cable 2. unscrew spark plug. Deal done. Not so with 690 Enduro R. It doesn't help that the owners manual doesn't have any instructions on how to change / remove the spark plugs.

The following is a step-by-step instruction on how to remove both of the spark plugs.

1. Disconnect the white coupler from the stick coil and pull the outer stick coil out from the stick coil holder. If the stick coil O-rings are dry, as they probably are, the coils need some force for it to pop out. Grease the O-rings once you you get them out.
This outer stick coil with the white coupler

Outer stick coil removed

the 2014 KTM 690 Enduro R stick coil itself. 1 of 2.
Now here is where it starts to get tricky. One would assume that the inner stick coil could also be simply pulled out from the holder, but that's a NO. The frame gets in the way and I didn't feel comfortable applying force to try to pry it past the frame.

At this point you would think that you could insert the spark plug removal tool in to the stick coil holder and simply remove the outer spark plug. Again NO. The bottom end of the stick coil holder is too narrow for the tool to reach the plug at the bottom of the hole! Yes, really. So more stuff to do before getting to the actual spark plugs.

Nope again

a) You need to pop out the inner stick coil, but since you can't fully remove it this point, leave it in the hole but make sure it is disconnected from the spark plug. (You can feel it pop of the plug). Disconnect the wire from the stick coil too.

b) You need to unscrew the 2 stick coil holder mounting bolts.

stick coil holder bolts

This bolt goes to the cable holder, removing it gives you a tiny amount of more room to work on the bolt behind the cables

The KTM toolkit T-wrench is slim enough to access the other bolt
 3. Lift off the stick coil holder. Dry O-rings may need some convincing again. I recommend applying grease to these O-rings too when you remount the holder.

2014 KTM 690 Enduro R stick coil holder

bottom end

top end


Finally! Access to the spark plugs!

Now You can finally just unscrew the plugs using the spark plug tool included in the toolkit.


2014 KTM 690 Enduro Spark plug specs

Inside spark plug: NGK LKAR8BI-9
Outside spark plug: NGK LMAR7A-9
Spark plug electrode gap: 0.9 mm (0.035 in)


  1. Hi,

    I am looking to upgrade the coil pack on my single cyl KTM 500 EXC to a direct fire coil pack like on the Duke 690. The spark plug I have in the 500EXC is the NGK LKAR8BI-9 (with a fixed top terminal). You said in the post its the "inside" spark plug coil I should be looking for. I am not sure which part number it is to get the right coil pack. I ebayed one used coil pack from the Duke (denso one ) - but when I got it, the terminal inside the coil pack is too small. Can you help?

  2. Thanks for publishing this it was too easy because of you!