The CB1100 Community Forum

During my diagnostic battle with my TSR Header, (she has no go now between 5K and redline, I suspect the PC V is dumping too much fuel) I pulled the plugs to see how she was running (they look on the rich side to me) The threaded portion of the plug is an inch long!

Just a word of advice guys, If you haven't pulled your plugs yet, do it and give them a good coat of anti-seize. The plugs take a 14 mm socket. Cheap insurance

Do you have to remove the tank to get to the inner plugs?

Space, I used this socket to get em without pulling the tank

http://www.motionpro.com/motorcycle/partno/08-0512/

There was a service bulletin about the plugs from honda. I believe I posted what it said back in April. let me see if I can find it.

Ok its service bulletin march 2013 and all it says is

" the oil gallery around each spark plug is sealed by a plug hole cover that should never need servicing during routine maintenance. Or cylinder head service. The spark plug threads are rather long ( 26.5 mm) so take care when removing the spark plugs"

No big deal...

(11-25-2013, 07:10 AM)HondaJon_imp Wrote: [ -> ]Space, I used this socket to get em without pulling the tank

http://www.motionpro.com/motorcycle/partno/08-0512/

Did you drop it over and then use an open-end wrench, or does a ratchet fit ok?

Space, you have to first remove the outer plug, then I used a 1/4 inch ratchet to loosen, then my fingers. I did undo the single tank bolt under the seat and proped the back of the tank up with a small box.

The hole in the socket is 1/4 inch, but an open end wrench could work too.

It will be interesting to see what the average life span of our plugs turns out to be. When I do change them I think the extra bucks for Iridium replacements will be money well-spent. This bike sure ain't no Shovelhead.

Those service bulletins are pretty interesting reading. Do you know if there's collection of them someplace on the web?

(12-01-2013, 02:54 AM)Pauley_imp Wrote: [ -> ]Those service bulletins are pretty interesting reading. Do you know if there's collection of them someplace on the web?

+1

(11-26-2013, 06:33 AM)The Spaceman_imp Wrote: [ -> ]It will be interesting to see what the average life span of our plugs turns out to be. When I do change them I think the extra bucks for Iridium replacements will be money well-spent. This bike sure ain't no Shovelhead.

I just looked the spark plugs up. The normal price for the NGK LMAR8A-9S here in Europe is 22,- € (that is just shy of 30,- US-Dollars). Per spark plug. You need four. I hope they last a while.