Echo Chain Saw CS590 2019 Spark Plug Terminal Replacement

Make sure you have the ignition switch turned off before starting your repair.

Use your fingers to loosen the air filter cover knob.

Remove the air filter cover.

Use your fingers to pull up and disconnect the spark plug boot.

Remove the air filter

Use a T25 Torx screwdriver to remove the five screws securing the front handle to the bottom and right side of the device:

Four 24 mm-long screws

One 25 mm-long screw

Pull the handle toward the rear of the device to remove it.

Use a 13 mm wrench to remove the two nuts securing the sprocket guard.

Remove the sprocket guard.

Push the guide bar towards the back of the device to create slack in the saw chain.

Pull the guide bar away from the device to separate the saw chain from the clutch drum.

Remove the guide bar.

Use a T25 Torx screwdriver to remove the two 20 mm screws securing the front hand guard.

Pull the front hand guard toward the rear of the device to remove it.

Use a T25 Torx screwdriver to remove the three 20 mm screws securing the engine cover.

Pull the engine cover straight off the device to remove it.

Use a T25 Torx screwdriver to remove the four 24 mm screws securing the starter case.

Remove the starter case.

Use your fingers to reroute the spark plug cable from its slot in the fan cover.

Use your fingers to reroute the ignition coil cable from its slot in the fan cover.

Use pliers, or your fingers, to disconnect the ignition coil cable's spade connector.

Use a T25 Torx screwdriver to remove the two 20 mm screws securing the ignition coil.

Remove the ignition coil.

When disconnecting the ignition coil from the spark plug cap, it is recommended to add dish soap to the cap. This should allow you to easily pull the ignition coil and terminal out of the cap. This can be done by hand, use pliers if needed.

Remove terminal from the ignition coil.

Replace the ignition coil tubing if needed at this step.

Gently squeeze the pointed end of the terminal into the end of the ignition coil using a pair of pliers.

Slide the ignition coil/terminal connection back in to the spark plug cap/boot. Add a drop or two of dish soap to the small opening on the spark plug cap/boot to make this easier.