left crank replacement

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Home Owner from family room

May 16, 2026 5:17 pm

see photos for only number-markings

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3 Replies

Home Owner from family room

May 16, 2026 6:36 pm

Screw holes on crank housing are 3-1/8 inches apart. Top arm is 5-3/8 inches. Bottom arm 3-3/4 i8nches.

Casey from SWISCO

May 21, 2026 10:51 am

Hello,

Your original GU operators were discontinued, but see the 39-315 and 39-316 operators suggested as replacements in our video below. Thanks for posting!

Alternate image for 39-316

Alternate image for 39-316

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