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25, NEEDLE BAR HEIGHT 23 1. To check your needle bar height turn the hand wheel towards you to bring the needle to it’s lowest position. When the needle bar is in it’s lowest position you can see that there are two hairlines on the left side of the needle bar. The upper hairline should be flush with the bushing. 2. If it is not correct locate the needle bar driver on the needle bar and with a 2.5 hex driver loosen the set screw. (Hold the needle bar to provide resistance…
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5, handi quilter HQ STITCH 510 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.
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48, THREAD DRAWING LEVER ADJUSTMENT (1 of 2) 1. Turn the hand wheel toward you to raise the needle bar from the lowest position to a point above the needle plate that is 10.5 mm. 2. Push the solenoid disk closed to move the thread drawing arm. When doing this the link body should lock into the thread cutter cam. 3. The thread drawing lever should also tap against the bobbin in the bobbin case very lightly, 4. If an adjustment is needed, push the solenoid disk closed and loosen the screw on …
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39, handi quilter HQ STITCH 510 NEEDLE THREADER ADJUSTMENT 1. If you need to change the needle threader pull the shaft down gently and push down on the threader gently and remove it. 2. If the height of the threader is off to the needle, then turn the hand wheel slightly to expose the threader block on the needle bar. Loosen the block with a 2 mm hex driver and either move it up or down to get the correct height. Do not rotate the block when adjusting it up and down. Then tighten the s…
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31, 29 NEEDLE TO HOOK TIMING & CLEARANCE (1of 5) 1. Remove the needle plate and foot. 2.Turn the hand wheel in direction of motion and raise the needle bar from it’s lowest position. Stop when the bottom hairline mark matches the bottom edge of the needle bar bushing. Important Note Before Proceeding with Timing: The timing belt should provide Imediate Transfer of Motion to the hook when the hand wheel is turned. If the timing belt te…
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44, THREAD GUIDE ADJUSTMENT (2 of 2) 2.7MM 2. The back edge of the thread guide plate should be about 2.7mm (the smallest step of the step gauge # QM39401) from the center needle position. 3. If you need to adjust the thread guide plate loosen the small black Philip's head screw and the larger Philip's head screw to the right of it. Move the thread guide plate into the correct position and tighten both screws. 42
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16, 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
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55, REMOVING THE DRIVE MOTOR (1 of 2) 1. Remove the two screws that hold the drive motor to the casting of the machine. 2. Lift up on the motor to cause slack and remove the belt from the hand wheel. 3. Remove the three screws that hold the motor cover to the machine. 4. Unplug the motor sensor connection. 53
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23, Grease – Put a small amount of grease on the following: #15 The thread cutter linkage (under bottom cover). 21
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30, FEED LIFTING CAM TIMING 1. When the tip of the needle is lowered into the needle plate about .4mm, the feed dogs should be just about even with the surface of the needle plate. 2. If an adjustment is needed lay the machine on it’s back and locate the feed lifting cam. Loosen the two hex set screws with a 2.5mm hex tool and rotate the cam either up or down in order to set the correct timing. 28
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29, FEED CAM TIMING 2. If you need to adjust the feed cam timing lay the machine on it’s back and locate the feed cam and loosen the two hex set screws with a 2.5mm hex tool and turn the cam until the feed dogs do not move. Re-tighten the hex set screws. 1. In order to check feed cam timing for proper sewing, remove the foot, turn the stitch length dial to 6. Bring the needle to the highest position. Start to lower the needle and stop a little below 17.5m…
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41, THREAD CUTTER ADJUSTMENT (1 of 2) 1. Turn the hand wheel to bring the needle down to it’s lowest position and continue to bring the needle up and stop about 6mm above the needle plate. It would be the distance of where the presser foot would be when raised. Since the needle plate is off you will have to estimate the 6mm above the plate. 2. Lay the machine down and push up on the link body while turning the hand wheel. As you do this the thread cutter will start to move Thread cutter Static cutter Thread guide 39 …
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45, STATIC CUTTER BLADE 43 1. Turn the hand wheel to bring the needle down to it’s lowest position and continue to bring the needle up and stop about 6mm above the needle plate. It would be the distance of where the presser foot would be when raised. Since the needle plate is off you will have to estimate the 6mm above the plate. 2. Lay the machine down and push up on the link body while turning the hand wheel. As…
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47, 4. If an adjustment is needed remove the two screws that hold the hook cover plate. 5. Loosen the hex screw with a 2.5m hex tool on the opposite side of the small steel gear on the lower shaft. After loosening the first screw, reset the machine as in step 1, 2 and 3. 6. Loosen the second screw on the small steel gear after resetting the thread cutter linkage. **The hook race has to be held tight as soon as the second screw is loosened on the gear.** While holding…
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34, 32 NEEDLE TO HOOK TIMING & CLEARANCE (4 of 5) 4. If an adjustment is needed, lay the machine down (remove the bottom baseplate cover if it has not already been removed). Locate the back of the hook race. There are three black slotted screws that hold the hook race tight. Loosen the three screws.
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58, 4. Place the motor into it’s position and slip the belt over the hand wheel. 5. Place the two screws in and tighten them. When you tighten the motor, you will also have to find the proper tension of the belt. If you lift the motor up and tighten you will have a lot of slack. It should be about 5mm of deflection. 5mm 6. Take a zip tie and wrap it around the motor bracket and the motor wire and secure it. Cut off the excess ta…
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26, handi quilter HQ STITCH 510 24 PRESSER BAR HEIGHT 1. To check the presser bar height lift the presser bar lifter up. Take the gauge and place it underneath the foot. The presser foot should rest on the fourth step which is 6mm. 2. If it is not correct locate the hex screw that is on the presser bar block. Take the 2.5 hex driver and insert it through the front set plate and the arm thread guide and into the block. Loosen the screw and …
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54, NEEDLE STOP POSITION 1. Note: When the needle up/down button is pressed the needle should stop just before the take-up lever is at the highest position with green up arrow illuminated or the needle at the lowest position with the red down arrow illuminated. If not hold down the needle up/down button and the bobbin winder button at the same time and turn on the machine. 2. Lower the needle bar by turning the hand wheel towards you and stop when the red and green a…
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46, 44 NEEDLE TO CUTTER CAM TIMING (1 of 2) 1. Turn the hand wheel to bring the needle down to it’s lowest position and continue to bring the needle up and stop about 6mm above the needle plate. It would be the distance of where the presser foot would be when raised. Since the needle plate is off you will have to estimate the 6mm above the plate. 2. Lay the machine down and push up on the link body while turning the hand whee…
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53, handi quilter HQ STITCH 510 INSTALLING THE A-BOARD 1. Install the A-board in the casing and attach the two Philip's head screws. 2. Attach the machine socket, transformer and driving motor wires into the A-board first. 3. Place the black cover on top and make sure to guide the wires through their respective opening and replace the two screws. Make sure not to pinch any wires. 4. Guide the wires through the top of the black cover. 5. Plug the remaining plugs back into the A-board 51
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32, handi quilter HQ STITCH 510 30 NEEDLE TO HOOK TIMING & CLEARANCE (2 of 5) Feed dogs removed for easier viewing 3. When the bottom hairline on the needle bar matches the bottom edge of the needle bar bushing the tip of the hook should be on the near or right hand side of the needle as shown. (See next page for larger hook point view) Hook point at near edge of needle
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62, CHECK SPRING STROKE AND PRE- TENSION DIAL 1. Thread the machine up to the thread guide. Make sure the foot is down. Grab the thread on the other side of the thread guide and mark it mentally. 2. Pull the thread and the check spring will swing down. The thread from where you marked before to the thread guide should be about 11- 15mm. Starting point 11-15mm 3. To adjust the tension stroke locate the screw under the beehive tension …
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52, A-BOARD REMOVAL 1. Unplug the 12 connectors from the A- board. (7 plugs are empty: 3 white, 3 black and 1 blue). Carefully remove the wires from the black cover attached to the right side of the A-board casing. 2. Remove the two Philip's head screws holding the black cover to the A-board casing. 3. Unplug the three remaining plugs. 4. Remove the two screws that hold the A- board into the casing. 5. Remove the A-board. 50
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28, handi quilter HQ STITCH 510 FEED DOG ALIGNMENT 1. When the stitch length dial is set to 0 (knob turned all the way clockwise) the feed dog in the center slot should be 4.2 – 4.8mm from the front edge of the slot opening of the needle plate. 2. The lateral gaps for the feed dogs should also be even. 3. If you need to adjust the feed dogs, lay the machine on it’s back and locate the feed rock arm and loosen the two hex set screws with a 2.5mm hex tool. *Use bottom part of gauge QM394…
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2, handi quilter HQ STITCH 510 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 Re…
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7, handi quilter HQ STITCH 510 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
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27, 25 FEED DOG HEIGHT 1. Turn the stitch length dial to 6 (all the way counterclockwise) and turn the hand wheel to bring the feed dogs to their highest position. When the feed dogs are at their highest position they should be about .8 – 1.0mm above the plate (you should just be able to see the full tooth above the needle plate and no more). Use the small #202007308 feed A/B feed dog height gauge. When A is up the gauge should move and when B is up it should not. 2. If they are not the c…
