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5-2-2021
APQS.com
General Maintenance
To remove the hook assembly, it is easiest to work from underneath the machine – you’ll need to make sure you
insert the tip of two long-handled screwdrivers in the air gap. Use the pictures on the next page to complete the
removal process safely.
Working from the underside of the machine, use two long handled flat blade screwdrivers - put the blades in the air
gap – one on either side of the main shaft. Twist the screwdriver handles to open the air gap more, and then ‘walk’
the old hook assembly off the shaft.
DO NOT USE THE FRAME OF THE MACHINE TO PULL THE OLD HOOK ASSEMBLY OFF THE
SHAFT!!!
You greatly increase the risk of changing the position of the hook shaft coupler or the drive shaft, which will
make the timing process much more difficult to complete.
Inspect the hook shaft after removing the hook assembly, and lightly buff any rough areas where set screws were
located. You can use a flat file as shown on the next page – turn the machine on with Stitch Regulator light of the
front panel at a low speed (8 or 9) and hold the file lightly and flat against the shaft as shown on the next page.
INCORRECT POSITION
FOR SCREWDRIVER
CORRECT POSITION FOR
SCREWDRIVER
Pull screwdriver handles towards
you to ‘walk’ the hook off the
coupler
Содержание Lenni
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