ABM International, Inc. Series: 1018, 1022 & 1026 V5.0
Model: Innova Longarm Quilting Machine Service Guide
Proprietary information of ABM INTERNATIONAL, Inc. furnished for customer use only.
No other uses are authorized without the prior written permission of
ABM INTERNATIONAL, INC.
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13.0 ADJUSTING THE HOOK DRIVE MECHANISM – BELT / GEAR
The INNOVA long arm quilting machine is equipped with either a belt or composite gear driven
hook assembly (See Figure 13.1). On a belt drive system, the main drive shaft turns the large
center pulley which drives the belt around two idlers and the small upper hook drive pulley. The
gear drive system consists of a composite gear mounted to an aluminum hub that turns the small
pinion gear on the hook drive shaft.
Figure 13.1 - Hook belt drive and gear drive assembly
Though most machines will never require adjustment, it may be necessary to service the belt or
gear drive assembly. This service can be preformed with standard hand tools including a flat
blade screw driver and Inch hex key set. To adjust the belt, remove the guard plate held in place
by the four screws on either side of the machine base. Upon closer inspection, the belt drive
assembly consists of four pulleys. For adjustment purposes, we are only concerned with the
lower two idler pulleys and the tension plate (See Figure 13.2).
Figure 13.2 – Idler pulleys and tension plate
The tension plate allows for adjustment of the tension of the hook drive belt. If the tension is too
loose or too tight or if the tension plate is misaligned, an audible “chirp” is usually heard from
the machine at certain speeds. The various procedures are as follows:
NOTE: Before performing any belt drive adjustments, remove the needle from the needle
bar and remove any loose clothing or jewelry. Additionally, remove the bobbin case from
the hook and clean all thread, dust and debris from around the hook assembly.
