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Ryobi CSB125 Motor Replacement

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This guide will show you how to properly access the internals to the motor housing to your Ryobi CSB125 circular saw. If you hear a humming noise when pressing the trigger, or while operating the saw smoke forms, then most likely the motor has gone bad. This troubleshooting page will help diagnose any potential problems occurring due to a faulty motor. In the event that a new motor is needed, this guide will show the steps to properly install a new one. The only tools you will need are a #2 Phillips screwdriver, a 7”/32 allen key, and a T20 torx screwdriver.

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  1. Ryobi CSB125 Motor Replacement, Motor: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Place the saw on a flat surface with the blade facing up.

    • Make sure that the saw is unplugged from any power source.

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    • Remove the bumper by using the T20 torx screwdriver to loosen the M5 x 20mm screw.

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  3. Ryobi CSB125 Motor Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Ryobi CSB125 Motor Replacement: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Use the 7”/32 allen key to loosen the 5/16-18 x 9/16 in. blade screw.

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  4. Ryobi CSB125 Motor Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the 5/16-18 x 9/16 in. blade screw, spring washer, the outer blade washer, the blade, and the inner blade washer.

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  6. Ryobi CSB125 Motor Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Ryobi CSB125 Motor Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Ryobi CSB125 Motor Replacement: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Use the #2 Phillip screwdriver to remove the four M4x16mm screws shown.

    • You will need to rotate the protective shell around in order to access them.

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  7. Ryobi CSB125 Motor Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the lower blade guard support assembly from the rest of the saw.

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  8. Ryobi CSB125 Motor Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Flip the saw over and place the saw down on a flat surface with the motor facing up.

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  9. Ryobi CSB125 Motor Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use the Phillips #2 screwdriver to remove the five M4x16mm screws.

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  10. Ryobi CSB125 Motor Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use the Phillips #2 screwdriver to remove the two M45x35mm screws.

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  11. Ryobi CSB125 Motor Replacement: crwdns2935265:010crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Ryobi CSB125 Motor Replacement: crwdns2935265:010crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Use the Phillips #2 screwdriver to remove the two M4x16mm screws holding down the end cover.

    • Pull off the end cover.

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  12. Ryobi CSB125 Motor Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Use the Phillips #2 screwdriver to remove the M45x35mm screw holding down the motor housing.

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  13. Ryobi CSB125 Motor Replacement: crwdns2935265:012crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the motor housing for access to the internal motor components.

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To reassemble your device, follow these instructions in reverse order.

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Curtis Melo

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UMass Dartmouth, Team S2-G1, Barthe Fall 2019 crwdns2935289:0UMass Dartmouth, Team S2-G1, Barthe Fall 2019crwdne2935289:0

UMASSD-BARTHE-F19S2G1

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