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Hinckley Classic Triples 885cc Classic Styled T3's: Legend, Thunderbird, Thunderbird Sport & Adventurer.

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Old 10-19-2004, 02:44 PM   #1 (permalink)
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I need to remove the spark plugs on my Legend, but I found that the 5/8" hex long reach spark plug spanner just seems to keep turning round as though its not engaging with the hex on the spark plug. I took the rubber grommet out of the spark plug spanner in case that was interfering with it, but still no good. I understand that the spark plugs are in fact the smaller size hex and not the "normal" size as found on my '79 Bonnie. I'm wondering now if there is yet another size of spark plug - is this the case, or is there some technique that I am not aware of? With the spark plugs being buried so deep into the cylinder head I can't see what the problem is. Anybody got any suggestions?
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Old 10-19-2004, 02:44 PM   #2 (permalink)
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I need to remove the spark plugs on my Legend, but I found that the 5/8" hex long reach spark plug spanner just seems to keep turning round as though its not engaging with the hex on the spark plug. I took the rubber grommet out of the spark plug spanner in case that was interfering with it, but still no good. I understand that the spark plugs are in fact the smaller size hex and not the "normal" size as found on my '79 Bonnie. I'm wondering now if there is yet another size of spark plug - is this the case, or is there some technique that I am not aware of? With the spark plugs being buried so deep into the cylinder head I can't see what the problem is. Anybody got any suggestions?
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Old 10-19-2004, 03:23 PM   #3 (permalink)
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I looked up the recommended NGK plug and it says that it is a 18mm hex. Click here for NGK.com info

In my experience, the best tool for removing the plugs is the one that came in the tool kit - do you have that?
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Old 10-19-2004, 03:23 PM   #4 (permalink)
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I looked up the recommended NGK plug and it says that it is a 18mm hex. Click here for NGK.com info

In my experience, the best tool for removing the plugs is the one that came in the tool kit - do you have that?
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Old 10-19-2004, 05:36 PM   #5 (permalink)
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Chris is right,
just checked my old plugs and I am running with NGK DPR8EA-9. 18mm hex.

I bought the Triumph plug tool at great expense only to find its not much more than a box spanner!
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Old 10-19-2004, 05:36 PM   #6 (permalink)
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Chris is right,
just checked my old plugs and I am running with NGK DPR8EA-9. 18mm hex.

I bought the Triumph plug tool at great expense only to find its not much more than a box spanner!
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Old 10-19-2004, 05:55 PM   #7 (permalink)
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Thanks Guys, No, I don't have the tool kit supplied plug spanner, which is why I am trying to use the standard plug spanners I already have. So so does that mean that in fact there are 3 different size hexagons for spark plugs? Both spark plug spanners I have in my tool kit are common standard sizes.
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Old 10-19-2004, 05:55 PM   #8 (permalink)
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Thanks Guys, No, I don't have the tool kit supplied plug spanner, which is why I am trying to use the standard plug spanners I already have. So so does that mean that in fact there are 3 different size hexagons for spark plugs? Both spark plug spanners I have in my tool kit are common standard sizes.
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Old 10-19-2004, 06:10 PM   #9 (permalink)
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I've got just about every plug spanner known to man [well four or five anyway], and the only one that works on the TBS is the factory supplied one.

Others are too wide, too thick, too short, too narrow, etc etc etc

I'd say a japper bike plug would work, but which one????
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Old 10-19-2004, 06:10 PM   #10 (permalink)
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I've got just about every plug spanner known to man [well four or five anyway], and the only one that works on the TBS is the factory supplied one.

Others are too wide, too thick, too short, too narrow, etc etc etc

I'd say a japper bike plug would work, but which one????
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