Introduction
Use this guide to replace the carburetor in your Echo Chain Saw CS-590 (2019).
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.
Note: Check that the serial number on your replacement part matches the one listed in the "Parts" section of this guide.
What you need
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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 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 24Â mm-long screws
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One 25Â mm-long screw
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Use a 13Â 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 20Â 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 20Â mm screws securing the engine cover.
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Use a T25 Torx screwdriver to remove the two 54Â mm screws securing the carburetor cover.
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Pull the carburetor cover straight off its housing to remove it.
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Use your fingers to pull the right fuel pipe out of the carburetor.
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Repeat the same procedure for the left fuel pipe.
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Lift the carburetor out of its housing.
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Twist the carburetor counter-clockwise to disconnect the throttle rod's metal clip.
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Remove the carburetor.
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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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