Question about Harley Davidson FLSTC Heritage Softail Classic Motorcycles

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Spark plug gap in 1996 883 sportster - FLSTC Heritage Softail Classic Harley Davidson Motorcycles

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Hi Anonymous, HD 6R12 spark plug is gapped at .040" Good luck

Posted on May 13, 2015


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Posted on Jan 02, 2017

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SOURCE: spark plug gap

pdf service manual free download here

Posted on Apr 03, 2009

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SOURCE: sportster 1200 hard starting

I would pull plugs again and examine them. Also connections from plug wire to plug and to coil. Do you have the original plugs if engine was running ok then. might try them.

Posted on Aug 08, 2009

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SOURCE: spark plug for 2006 HD sportster the plug is a NGK

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Posted on Sep 13, 2009

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SOURCE: spark plug gap for a 2006 harley sportster

.038 to .043, hope this is what you needed.


Posted on Nov 08, 2009

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1 Answer

Spark plug gap for a1976 hd XLH sportster

Hi Anonymous, if you have a points ignition system H-D spark plug # 4 is gapped at .028" electronic ignition takes a # 4R gapped also at .028" and they both are torqued at 30 ft lbs. Good luck and have a nice day.

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Hi Anonymous, the HD 6R12 spark plug is gapped at .040" Have nice day.

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Hi Anonymous, the HD 6R12 spark plug is gapped at .040" Have nice day.

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How to change spark plugs on a 02 harley sportster 1200 custom ?

With the engine cold, remove the wires from the spark plugs, then use a spark plug socket to remove them. Set the gap on the new plugs at 0.040 (forty thousandths). Give the threads a light coating of anti seize and install the new plugs. Re-install the wires and you are done.

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Solid state electronic ignition on this bike, no points. Spark plug gap is forty thousandths if that's what you mean.

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2 Answers

What gap are the plugs supposed to have ?

Depends on which spark plugs you're running and the year model of your Sportster. Please provide this information and I can help you.
Usually, a '79 XLH running H-D #4 plugs the gap is 0.060". Later models run 0.038" to 0.043".

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1 Answer

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