Model #917383271 Craftsman walk behind lawnmower, gas

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Question and Answers


Is there a special tool to replace the lock ring on the primer plunger of a Craftsman lawn mower?


A special tool is not required for replacing the lock ring for the primer bulb of your mower. The best tool to use is a socket.

Find a socket that will just fit into the opening the primer bulb goes into and place the ring in position.

Place the socket over the ring and tap the socket lightly with a hammer.

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Jimmy K -
Sears Technician
September 08, 2009

Recommended maintenance parts & accessories

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