Lockmaster Lockcase with hook and single spindle unsprung mechanism.

Operation: Single spindle version

Please note that if the latch is pushed in before the case is fitted to the strip it will stick.

If your lock has a hold-back spindle the latch can be released by turning the spindle.

If your lock has a hollow white plastic piece in the hold-back spindle hole then insert a screwdriver into the face of the lock and push down the white plastic piece to release the latch.

Once fitted this will not happen and the handle will pull the latch back through its normal cycle.

Also known as Ultimate Collection. Yale Lockmaster Key Turn gearboxes look quite different from regular Lockmaster gearboxes with the corner of the lock removed.

The Key Turn gearbox is available in a 45mm backset only.

Gearboxes are attached to faceplates with 3 screws and cannot be interchanged with other lockmaster locks.

When measuring the backset, allow 2-3mm for the faceplate, so a 28mm backset gearbox will measure 25mm when not fixed to the strip.

We stock a range of associated products for Lockmaster Key Turn gearboxes, including multipoint door locks, keeps, spindles, handles, and accessories.

To lock the door

1. Lift the handle upwards to engage the locking points.

2. Lock the locking points and main deadbolt (if present) by turning the key.

To unlock the door

1. Unlock the system by turning the key.

2. Push the handle downwards to disengage the locking points and retract the latch.