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Follow this guide to replace the arbor shaft bearings on an EDCO PRO KL-18 walk behind concrete saw model 39600-HD.
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Chock the wheels to prevent the machine from moving while you are working on it.
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Flip the ignition switches on the motor and the handle bar into their "OFF" positions.
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Flip the fuel cutoff valve switch into the off position.
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Grab the plastic housing at the end of the spark plug wire.
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Pull firmly to disconnect the wire from the spark plug.
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Use a 9/16 inch socket to remove the two bolts securing the belt guard to the main frame.
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Use a 9/16 inch wrench to loosen the lock nut on the belt-tensioner bolt.
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Use your finger to spin the lock nut counterclockwise until there is a about a one inch gap between it and the frame.
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Wrap a piece of tape around the belt-tensioner bolt where it meets the frame.
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Use a 9/16 inch socket to remove the belt-tensioner bolt from the frame.
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Use a 9/16 inch wrench to remove the nut securing the ground wire to the engine block.
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Remove the ground wire and tooth washer from the engine mount.
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Use a 9/16 inch wrench to loosen the four nuts securing the engine block to the frame, two on the front and two on the back.
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Slide the engine towards the front of the frame to relieve tension on the belts.
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Lift the outermost belt out of its pulley groove and rotate the motor pulley to remove it.
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Repeat for the two remaining belts.
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Place the guide bar onto the ground out of the way of the blade guard.
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Lift the blade guide straight up and off of the frame and place it next to the machine.
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Use the two included 1-1/2 inch wrenches to twist the arbor shaft nut counterclockwise while holding the backing plate in place.
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Remove the arbor shaft nut, lock washer, and blade cap from the arbor shaft.
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Lift the guide bar back up off the ground into its vertical position.
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Use a 9/16 inch socket to remove the four bolts securing the arbor shaft bearings to the frame.
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Remove the belts from the arbor shaft pulley.
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Use a pen to mark the location of the pulley on the arbor shaft.
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Use a 5/32 inch hex key to loosen the two arbor shaft pulley set screws.
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Remove the arbor shaft pulley.
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Remove the shaft key.
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Use a pen to mark the locations of both of the arbor shaft pulleys.
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Use a 1/8 inch hex key to loosen the two set screws on the arbor shaft bearing opposite the backing plate.
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Remove the left arbor shaft bearing.
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Use a 1/8 inch hex key to loosen the two set screws on the arbor shaft bearing next to the blade backing plate.
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Remove the right arbor shaft bearing.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
