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Sears Craftsman 315.109020 Motor Replacement

Introduction

Is your old circular saw motor just not running well anymore? This guide will help you to remove that pesky old motor and install a new one.

What you need

  1. Sears Craftsman 315.109020 Motor Replacement, Motor: step 1, image 1 of 2 Sears Craftsman 315.109020 Motor Replacement, Motor: step 1, image 2 of 2

    • To ensure that you do not get grease and dirt on your table or floor, lay a towel down before you begin working.

    • The grease from the circular saw can stain your towel so a dirty towel or work rag is recommended.

    Edit

  2. Sears Craftsman 315.109020 Motor Replacement: step 2, image 1 of 3 Sears Craftsman 315.109020 Motor Replacement: step 2, image 2 of 3 Sears Craftsman 315.109020 Motor Replacement: step 2, image 3 of 3

    • With your Phillips screwdriver, unscrew all 7 of the 20 mm screws on the handle of the circular saw.

    • There is one 25 mm screw that goes in the hole circled in red.

    • Unscrew the forked screw head

    • Lift off the top half of the handle.

    Edit

  3. Sears Craftsman 315.109020 Motor Replacement: step 3, image 1 of 2 Sears Craftsman 315.109020 Motor Replacement: step 3, image 2 of 2

    • Unscrew the two wide-head 20 mm screws holding the remaining half of the handle to the motor.

    • Remove the remaining half of the handle from the motor by lifting it over the screw that is keeping it in place.

    Edit

  5. Sears Craftsman 315.109020 Motor Replacement: step 4, image 1 of 3 Sears Craftsman 315.109020 Motor Replacement: step 4, image 2 of 3 Sears Craftsman 315.109020 Motor Replacement: step 4, image 3 of 3

    • Using a crescent wrench, unscrew the hex washer head screw that is holding the blade in place.

    • Lift the blade over the internally threaded screw and pull it off of the saw.

    • If the hex washer head screw rotates but does not loosen or if the whole blade rotates as you turn your wrench, giving the wrench a quick jerk should loosen the screw.

    Edit

  6. Sears Craftsman 315.109020 Motor Replacement: step 5, image 1 of 2 Sears Craftsman 315.109020 Motor Replacement: step 5, image 2 of 2

    • Remove the blade cover by applying upward pressure until it unsnaps from the washer.

    • The blade cover will come off easier if it is facing away from the rest of the saw (see second picture).

    Edit

  7. Sears Craftsman 315.109020 Motor Replacement: step 6, image 1 of 2 Sears Craftsman 315.109020 Motor Replacement: step 6, image 2 of 2

    • Unscrew the 70 mm screw that is inside the black tube (see first picture).

    • Unscrew the five screws as highlighted in the second picture. The bottom left is a 70 mm screw and the other four are 20 mm screws.

    • Unscrewing the remaining four 20 mm screws are unnecessary unless you wish to repair or replace the cogs in the saw.

    Edit

  8. Sears Craftsman 315.109020 Motor Replacement: step 7, image 1 of 2 Sears Craftsman 315.109020 Motor Replacement: step 7, image 2 of 2

    • The motor will now be loose and you should be able to twist the motor in a counter-clockwise direction until it is able to be pulled off.

    Edit
Conclusion

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

One other person completed this guide.

Author

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Blake Avant

Member since: 09/29/15

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Cal Poly, Team 17-4, Green Fall 2015 Member of Cal Poly, Team 17-4, Green Fall 2015

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