Введение
Use this guide to replace the ignition assembly in your Echo Chain Saw CS-590 (2019). The ignition assembly includes the ignition coil, flywheel, and the woodruff key.
Although it's not necessary to remove the guide bar, it's highly recommended you do so to minimize any damage to the chain and to yourself.
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Make sure you have the ignition switch turned off before starting your repair.
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Use your fingers to loosen the air filter cover knob.
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Use your fingers to pull up and disconnect the spark plug boot.
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Use a T25 Torx screwdriver to remove the five screws securing the front handle to the bottom and right side of the device:
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Four 24 mm-long screws
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One 25 mm-long screw
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Pull the handle toward the rear of the device to remove it.
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Use a 13 mm wrench to remove the two nuts securing the sprocket guard.
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Push the guide bar towards the back of the device to create slack in the saw chain.
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Pull the guide bar away from the device to separate the saw chain from the clutch drum.
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Remove the guide bar.
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Use a T25 Torx screwdriver to remove the two 20 mm screws securing the front hand guard.
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Pull the front hand guard toward the rear of the device to remove it.
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Use a T25 Torx screwdriver to remove the three 20 mm screws securing the engine cover.
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Pull the engine cover straight off the device to remove it.
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Use a T25 Torx screwdriver to remove the four 24 mm screws securing the starter case.
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Use your fingers to reroute the spark plug cable from its slot in the fan cover.
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Use your fingers to reroute the ignition coil cable from its slot in the fan cover.
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Use pliers, or your fingers, to disconnect the ignition coil cable's spade connector.
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Use a T25 Torx screwdriver to remove the two 20 mm screws securing the ignition coil.
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Wedge a flathead screwdriver between the chassis and the flywheel's spokes to prevent the flywheel from spinning.
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Use a 13 mm wrench to loosen and remove the flange nut located in the middle of the flywheel.
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Use a T25 Torx screwdriver to remove the two 16 mm screws securing the starter pawls.
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Remove the starter pawls.
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16 mm screw
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Washer
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Starter Pawl
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Spacer
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Torsion Spring
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Use a flywheel puller to disconnect the flywheel from the woodruff key.
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Pull the flywheel straight off of the crankshaft and remove it.
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Insert a flathead screwdriver into the gap at the top of the woodruff key.
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Pry with the screwdriver to separate the key from the crankshaft.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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