Raptor 400 Spark Plug Tune-up

[parrothd]

Spark Plugs:
Motorcraft SP-526 (16 total)

Remove the Engine cover and side panels.

1. Remove the two bolts for the fuse box and move the fuse box to the center.
2. Remove the spark plug assembly bolts, one per spark plug on the top.
3. Disconnect the spark plus assembly buy pressing on the clip and remove, don't pull on the wires.

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Remove the EGR hose, pull outwards.

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Remove the spark plug assembly, pull straight up, then remove the spark plugs and install new.

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1. Remove the bolts for the ECU/computer, you can gently move this to the center of the engine.
2. This spark plug is partially blocked by the fuel line, disconnect the connector and lower plug wire by pulling on the cap.
3. By moving the fuel line to the side you can remove the spark plug assembly.

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Remove the ECU/Computer mounting plate, 2 alen bolts and one bolt. No need to cut the zip ties just swing the plate out of way towards the outside.


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Remove the spark plugs bolts and assemblies and replace plugs.

Reverse steps to reinstall everything, push the spark plug assemblies into the hole and seat on the spark plug, then rotate to line up.