LC4 Spark Plug Socket

Discussion in 'Thumpers' started by b17flyguy, Apr 21, 2006.

  1. b17flyguy

    b17flyguy Adventurer

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    I am sure this has been asked before, but I couldn't find it.

    What size socket does the spark plug need? I tried fitting a couple of standard sockets in there but none would fit :huh.

    Not having the KTM Toolset would the Kimpex Tool work on me 2002 LC4-E?

    Any other suggested spark plug tool?

    By the way, I do not have a lathe, welder, or factory tool :patch.

    I am thinking about getting the rear shock spanner with this. Any other essential LC4 tools I should buy!?!?!

    Thanks :D
    #1
  2. twotyred

    twotyred Practising Recedivist

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    I went down to my local MC Dealer with a spark plug in my hand and he matched it with one that fits. It is a common size used in dirt bikes. Get a long one with a hole in it so you can use a screwdriver to turn. I had to drill mine to suit.

    That Kimpex tool looks too short.
    #2
  3. meat popsicle

    meat popsicle Ignostic

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    heya,

    If I remember correctly, the LC4 requires a spark plug socket that is very THIN walled. Thin metal, so that it fits around the spark plug between it and the engine... does that make any sense? :D

    That one you posted might work if it is thin enough. Pehaps one of the measuring types (w/ calipers) can measure the gauge of the metal (if that is the correct terminology) and you can check with that mfg. to see if it's similar.

    Other tools; are there not any threads in the index? Gawd that thing is a mess!
    #3
  4. zugy

    zugy My brother wheeling SXC

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    I have 2 lc4's they take different size sockets. I forgot which one it is but as meatsicle stated it may have to be a thin wall. Just order the tool kit for your exact bike. I don't think it's over $50 bucks. Handy T-wreches I always use for shrouds, plastics and more . Plus other handy tools. The can bottle opener is an intersting tool. They where thinking on that one :wink:
    #4
  5. cat

    cat Long timer

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    #5
  6. AndyB

    AndyB Lonely Traveler

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    The key element here is a very thin walled wrench. the plug wrench that came in the oem tool kit didn't fit !?! what i found was the one from my 400rxc kit did. looking at the differences was the thickness of the wall AND the outter corners were rounded. so the simple fix was a belt sander and rounding off.
    #6
  7. braaap!

    braaap! waiting for the big one

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    640A spark plug is listed as a NGK DCPR8E.... which fits the oem plug wrench tool perfectly! (16mm) and allows you to remove / reinstall a plug at home or more importantly out on the trail...
    Get your bike 'serviced' at the KTMshop.. and they just happen to change your plug for a NGK DPR8EA (18mm)....

    :ddog

    ... weeks later in the workshop, checking valve clearances on a saturday afternoon.... fcuk!!

    Spent more time grinding down another plug socket to clear the recess in the head than the job at hand!... just glad I was in the workshop....
    #7
  8. lvdukerider

    lvdukerider Las Vegas Nevada

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    Snap-On sockets are made thin walled and will fit. Most motorcycle shops or accessory warehouses will sell you a Motion Pro spark plug tool for a reasonable price.
    #8
  9. meat popsicle

    meat popsicle Ignostic

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    braaap!

    why did you let a KTM Factory Authorized disService Center touch your ride?

    :uhoh
    #9
  10. braaap!

    braaap! waiting for the big one

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    Hey Meat! yeah I got suckered.... plus when I changed my oil, discovered the fliter plug had had its ears knocked off, felt like it was torqued up to 3000Nm!
    The magnet plug was 'finger' loose..... apparently the case thread gave way before the mechanic could get the torque up.... so he happily glued it back in with some goopspooge!

    Ah I love a professional job! :uhoh
    #10
  11. Laromonster

    Laromonster Vesperado !

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    Mine was delivered from the factory with the DPR8EA and a wrench that fits it
    #11
  12. braaap!

    braaap! waiting for the big one

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    Mine the opposite, go figure! being 'inbetween' for whatever reason, is a complete shit! :nod
    #12
  13. GodSilla

    GodSilla I did that.

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    Hey Braaap, who in Melbournia did such a crap job? I just don't understand how KTM can employ every useless wrench in the country.
    #13
  14. braaap!

    braaap! waiting for the big one

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    Ktm Richmond, they can backtrack the computer records as to whom worked on the bike..... and he's now gone.

    seems like they turn over staff quicker than the russian sex trade .

    they've offered a helicoil job next weekend ... maybe the smarter move will be to get them to supply me the bits (plus oil) and do it myself.
    #14
  15. GodSilla

    GodSilla I did that.

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    Shops that turn staff over like that are usually bad news eh. I woulda thought there'd be a better shop in the city somewhere for KTM servicing, after all you can get a decent coffe anywhere there (as opposed to the rest of the country) so why not a good workshop?
    #15
  16. flux_capacitor

    flux_capacitor I know a shortcut!

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    This is true. My old 02 LC4E and my 03 SXC both used different sizes. Just an FYI, I think it's because the SXC has the high flow head.
    #16
  17. meat popsicle

    meat popsicle Ignostic

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    How comfortable are you that bits of the case threads were not stuffed into the crankcase? I couldn't get a machinist to touch mine without splitting the cases, and finally tapped it out to 1/2" myself, which is the standard automotive drain plug size in the US. I have seen quite a bit of metallic sheen in my oil changes, which I guess (hope?) is from my mistake.

    righty tightey, lefty loosey
    upside down, and not thought through
    will ruin your day man; give ya the blues
    #17
  18. braaap!

    braaap! waiting for the big one

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    Alloy cases + a hamfisted mechanic.... viola!

    [​IMG]

    I hear ya Meat! I'll be really careful OK.....

    My engine has eaten rocker rollers before, so a little aluminium roughage shouldn't be that bigga deal besides it makes cool swirly patterns in the drop tray....

    :lol3

    cheers
    #18
  19. meat popsicle

    meat popsicle Ignostic

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    :rofl

    mmmm, mushroom tea...
    #19
  20. Donkey Hotey

    Donkey Hotey De Jo Momma

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    I don't know if that's a mechanic problem, if the factory was botching them or if there's something about that casting and that bolt. That's the same exact one that stripped on my 620 Adventure. We all seem to have stripped the same bolt. That can't be a coincidence.

    I greased up the drill and cleaned it out slowly, then greased the tap to collect the chips. I washed a bit of solvent through the case, let it dry over night, then threaded the heli-coil into place. No further problems.

    Of course, if you're really anal, just mount the whole motorcycle sideways on a DeVlieg Jig Mill and drill it out. :D
    #20