SERVICE MANUAL
Date:
2011/09/23
Page:
27/39
Model:
K65&K85
SEC. 09
Needle timing to feed-dog
Note: After adjustment, be sure to follow
“Needle timing to shuttle”.
As horizontal and vertical feed motion is unitized on this model, adjustment of feed
timing is as follows:
Checking:
1.
Bring needle bar to its highest position by turning hand wheel.
2.
Check to see if feed dog starts to move when needle starts to go down by
turning hand wheel towards you.
Adjustment:
1. Turn off the machine with feed amount set at maximum for adjustment.
2. Loosen one of two screws (b) of timing belt gear (a) on main shaft.
Turn hand wheel by hand and stop it when needle tip arrives at the surface of
needle plate. Holding this position, loosen the other screw so that the gear may
be perfectly freed from the main shaft.
Feed dog starts to move a little bit
earlier than when needle starts to
go down.
b
a
