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Harley-Davidson Sportster Evolution Spark Plugs Replacement

Введение

This guide will show how to remove the old spark plugs, check the new spark plugs for installation, prepare the spark plugs for installation, and reinstall the new spark plugs.

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  1. Harley-Davidson Sportster Evolution Spark Plugs Replacement, Spark Plugs: шаг 1, изображение 1 из 1

    • The spark plugs are easy to spot on the left side of the motorcycle.

    • The procedure for removing the spark plugs is the same for both the front and back cylinder, and either spark plug can be replaced first. This guide will show how to remove and install the spark plug in the rear cylinder.

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  2. Harley-Davidson Sportster Evolution Spark Plugs Replacement, Removing the old spark plug: шаг 2, изображение 1 из 2 Harley-Davidson Sportster Evolution Spark Plugs Replacement, Removing the old spark plug: шаг 2, изображение 2 из 2

    • Carefully remove the spark plug wire. Do not pull on just the wire, squeeze the spark plug boot, and pull it together with the wire.

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  4. Harley-Davidson Sportster Evolution Spark Plugs Replacement: шаг 3, изображение 1 из 2 Harley-Davidson Sportster Evolution Spark Plugs Replacement: шаг 3, изображение 2 из 2

    • Use an 11/16" spark plug socket to unscrew the spark plug by turning in a counter-clockwise direction.

    • Some aftermarket spark plugs that fit the Sportster use a slightly larger 18mm spark plug socket.

    • Remove the spark plug from the cylinder.

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  5. Harley-Davidson Sportster Evolution Spark Plugs Replacement, Checking the new spark plug: шаг 4, изображение 1 из 3 Harley-Davidson Sportster Evolution Spark Plugs Replacement, Checking the new spark plug: шаг 4, изображение 2 из 3 Harley-Davidson Sportster Evolution Spark Plugs Replacement, Checking the new spark plug: шаг 4, изображение 3 из 3

    • Always inspect your new spark plugs before installing. Check the gap on your replacement spark plugs with a feeler gauge. It should be set to .040 inches (1.016mm).

    • If they are not pre-installed, make sure that the crush washer and terminal nut are installed.

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  6. Harley-Davidson Sportster Evolution Spark Plugs Replacement, Installing the new Spark Plug: шаг 5, изображение 1 из 2 Harley-Davidson Sportster Evolution Spark Plugs Replacement, Installing the new Spark Plug: шаг 5, изображение 2 из 2

    • Using your fingers, install the new spark plug into the socket, and hand tighten until firm.

    • Using a torque wrench, tighten the spark plug to the proper specification.

    • When installing spark plugs, proper torque can be important. To loose and they could rattle out or leak; too tight and you can strip your cylinder head. The correct torque for this plug is between 90 and 120 inch lbs.

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  7. Harley-Davidson Sportster Evolution Spark Plugs Replacement: шаг 6, изображение 1 из 1

    • Reinstall your spark plug wire by pushing it firmly onto the new plug.

    • Make sure that it seats properly. You can usually feel a definitive click when it is installed correctly.

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Заключение

Be sure to repeat the above procedure for the remaining cylinder.

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Eric Essen

Участник с: 06/04/10

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iFixit Участник iFixit

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8 Комментариев

Just for information, particularly in the UK, you may be able to purchase sparking plugs cheaper at a Chandlers, as there are quite a few 4-stroke outboard engines use these plugs.

BigRoj - Ответить

How do you do this with a XL1200S with dual spark plug heads??

Andy - Ответить

Couldn't have made it any simpler

Matt Pramik - Ответить

-awesome

- appreciated

Thank you so much for your posting. I'm 2k miles from my daughter who is teaching herself how to maintain her own bike. You site is immensely helpful and appreciated as much.

mrjacecabezut - Ответить

Says between 11 and 18 pounds in manuel

bobafett717 - Ответить

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