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How to install the 39-403 and 39-404 Pella Folding Crank and Lock Kit

  • Medium sized flat-bladed screwdriver
  • Small flat-bladed screwdriver
  • #1 Phillips screw driver


Note: Finish the interior of the window and allow the window to dry before proceeding with these instructions. (To open the window for finishing, partially insert the lock handle into the jamb, unlock the unit, temporarily attach the crank handle and to open.)

A. Place the cover over the operator stud and snap into place. Position the pocket end of hte cover into place.
Note: If the cover does not have the screw hole, apply pressure on the pocket end of the cover to snap the cover into place and proceed to step C.

B. Insert the provided screw into the hole in the bottom of the pocket. Use a #1 Phillips screwdriver to secure the pocket screw snug against the bottom of the pocket to avoid scratching the crank handle knob. DO NOT over tighten.

C. Use a medium size flat-blade screwdriver to loosen the set screw in the crank handle.

D. Slide the crank handle down
and check alignment of knob with the pocket.
Note: You may need to adjust the crank position on the stud until the correct alignment is achieved.

F. Open the crank and tighten the set screw.

G. After the final installation, fold the crank over and snap the knob into the pocket.
Note: Even with the window open the crank can be folded to avoid interfering with the window treatments.

40-191 Mortise Lock Latch Assembly Removal Step 1


Note: You may want to remove the lock lever prior to finishing the window, or if it needs to be replaced with a lock lever in a different finish.

A. Unlock and open the window.

B. Place the lock lever in the locked position.

C. From the exterior of the window,
insert a small flat-blade screwdriver between thecam and lock lever near the bottom of opening between the stop and frame gasket.

D. Push the screwdriver inwards with a small amount of pressure; then turn the blade slightly clockwise for a left hand unit, counter-clockwise for a right hand unit.DO NOT over-twist the screwdriver, this can damage the lock driver.
Note: This will release the hook in the lever from the cam hook.

E. Remove the lock lever
by pulling it toward the interior of the building.

F. To install a lock lever, hold it in the lock position and insert it, from the interior, into the slot until it snaps into the cam.

40-191 Mortise Lock Latch Assembly Removal Step 1
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