handi quilter HQ STITCH 510 User manual

HQ Stitch 510
SERVICE MANUAL
10/11/16

Top Cover Removal
Belt Cover Removal
Base Plate Removal
Needle Bar Height
Presser Bar Height
Feed Dog Height
Feed Dog Alignment
Feed Cam Timing
Feed Lifting Cam Timing
Needle to Hook Timing and Clearance
Hook Stopper Position
Needle Threader Adjustment
Thread Cutter Troubleshooting Chart
Thread Cutter Adjustment
Thread Guide Adjustment
Static Cutter Blade
Needle to Cutter Cam Timing
Thread Drawing Lever Adjustment
Auto Tension Release
Identifying Electronic Components & Connections
A –Board Removal
Installing the A –Board
Needle Stop Position
Removing the Drive Motor
Installing the Drive Motor
Cover Replacement
Attaching the Base Plate
Check Spring Stroke & Pre Tension Dial
Timing Belt Tension Adjustment
1
2
3
4-22
23
24
25
26
27
28
29-33
34-36
37
38
39-40
41-42
43
44-45
46-47
48
49
50
51
52
53-54
55-56
57-58
59
60
Table of Contents
HQ Stitch 510 Lubrication Appendix
61

FRONT COVER & FACE PLATE
REMOVAL
1
1. Remove the two screws
on the top cover.
2. As you start to remove the top
cover be very careful not to pull it
off. There is a plug connection
coming from the bobbin winder
motor to the top of the A-board.
Carefully disconnect the wires and
remove the cover.
3. Look at the left side of the machine
and remove the screw that holds the face
plate on and remove the cover.

BELT COVER REMOVAL
2
1. Turn the machine to look at the
right hand side. Locate the three
Philip's head screws and remove
them.
2. Start to remove the belt cover
from the front and unlocking it
from the clips in the rear. Be
careful not to remove it fast and
tear it away from the machine.
There is a plug connection on the
board.
3. Gently lay the belt cover against the
table and unplug the connection from
the belt cover to the machine.

BASE PLATE REMOVAL
3
1. Lay the machine down and locate the four black screws in the
rubber feet and remove them completely.
2. Gently lift up on the machine and remove the base plate.

HQ Stitch 510 Lubrication
4

Lubrication Notes
Factory Note: “Factory lubricated parts will provide
years of household sewing without routine oiling.
However, whenever the machine is being serviced,
check to see if any parts need to be lubricated.”
5

Lubrication Notes
1. Oil – Put a drop of HQ Stitch oil on each point.
2. Grease - Put a small amount of HQ Stitch grease on
each point.
3. Excessive lubrication can cause more harm than
good, use only a little lube in the right place.
6

Oil – Put a drop of oil on the following:
#1 The presser bar at the top and bottom bushing (behind the face
cover and under the top cover).
4
4
7
4

Oil – Put a drop of oil on the following:
#2 The top and bottom of the needle bar at the bushings (behind
the face cover).
4
4
8

Oil – Put a drop of oil on the following:
#3 The felt on the underside of the machine top cover, for the
presser bar and take-up lever (seen when removed).
9

Oil – Put a drop of oil on the following:
#4 The felt at the top of the needle bar bushing (under top cover).
10

Oil – Put a drop of oil on the following:
#5 The take up lever crank at the three orifices (under top cover).
7
11

Oil – Put a drop of oil on the following:
#6 The take up lever connecting rod between the crank and the
needle bar driver, at the top orifice and at the bottom where it
connects to the needle bar driver (behind the face cover and under
the top cover).
12

Oil – Put a drop of oil on the following:
#7 The oil wicks at the top needle bar bushing and take up lever
links (under top cover).
Note: oil the wicks
enough (more than a
drop) so that the oil
can run down to the
ends of the wicks to
lubricate the
components.
13

Oil – Put a drop of oil on the following:
#8 The large bottom timing shaft (with timing belt) right end
bushing, oil between the collar and the bushing on the left and
between the pulley and bushing on the right (under bottom cover).
14

Oil – Put a drop of oil on the following:
#9 The large bottom timing shaft (with timing belt) left end
bushing, oil at each side of the bushing (under bottom cover).
10
15

Oil – Put a drop of oil on the following:
#10 The bottom feed shaft bushings, on both sides of bushing at shaft.
There are two left bushings and two right bushings) (under the bottom
cover).
16

Oil – put a drop of oil on each of the following:
#11 The articulating links between the two bottom feed shafts at
each pivot point (under bottom cover).
17

Oil – put a drop of oil on each of the following:
#12 The two felts on the feed dog support shaft (under bottom
cover).
18