How to remove the handwheel on a 1703 (and maybe others but not sure) To remove the handwheel on an 1703 you need to remove that light colored circle in the center of the handwheel. Take a pin or needle and put it in the tiny hole you'll find along the edge of that circle and lift off. Under it is a screw
to loosen to remove the handwheel.
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The machine has two belts, one from the motor to a transfer pulley and the second from that pulley to the handwheel. You have to loosen the motor mount (one large screw/bolt) to release tension on the transfer pulley which in turn releases tension on the handweel belt. You will have to take the belts off the transfer pulley to slide the handwheel off (assuming you have already removed knob in the center of the handwheel)
Don't forget to lubricate the shaft of the transfer pulley while you have the end cover off. If this runs dry you will have a problem.
If the drive belt is not off or broken, then check hand-wheel setting. On some models the hand wheel can be pushed in (to engage) and pulled out (to disengage) for using bobbin winder. If it is disengaged the hand-wheel will spin freely. On older models there is a smaller wheel that has to be hand tightened in order to engage rest of machine. Hope this helps.
Unfasten the top, bottom, side and handwheel covers, using a screwdriver. Set the covers aside.
Remove the plate that covers the
thread bobbin. If it is screwed in place, use a screwdriver. If it is
held by a clip or magnet, use a small flathead screwdriver to pry up the
Thoroughly clean inside all the
openings, using a vacuum with crevice attachment. Remove any stubborn
lint, and use tweezers to take out any thread that is wound around the
Clean the teeth on the gears, using the tip of a round toothpick to loosen the grime. Vacuum to remove it.
Lubricate all the moving parts. Use white lithium grease on the gears, and sewing machine oil on the other parts.
Reassemble the machine and plug it in.
Tightening or replacing the drive belt
Remove the top cover, bottom cover and handwheel cover, using a screwdriver to take out the screws.
Inspect the drive belt. If it is
slack, use your screwdriver to loosen the screws that hold the motor in
place, then follow step 4, below, to increase the belt's tension. If
the belt is cracked or broken, get a replacement from your sewing
Install the new belt. Loosen the
motor-mounting screws, and shift the motor toward the handwheel so you
can slip the belt over the parts.
Shift the motor away from the
handwheel to increase the belt's tension, then tighten the
motor-mounting screws and check the tension. The belt should flex no
more than 1/2 inch (12 mm). If it is too loose, increase the tension.
Check the centre of the handwheel, there will either be A) an inner wheel or B) push/pull device to disengage the needle arm when bobbin winding....it needs to be A) tight, or B) pressed in to re-engage the clutch for sewing......your manual will probably have a diagram,
I could not find a picture of this model, so unsure of the exact mechanism, but it is in the middle of the handwheel
Actually,timing of needle vs, shuttle is not very easy job several factor you should check on.There is belt ot sometime a shafting with worm gear and helical gear under machine w/c drive the shuttle with the bobbins in timing order,Any one of them is present on the timing adjustment can be done by releasing the belt or the helical gear,besure machine is unplug then set all mechanism on low dead center meaning the needle move to utmost lower position catching this by the shuttle and bobbins at center position.No motion applied if this was set up,engage the belt with pulley and the bobbins link holder tigh allenscrew besure the needle is lower dead center at the center of shullle bobbins catching needle without motion when setting back at original position.If this was made manually move it on handwheel going up and side down the needle gradually if the needle move freely several time and it was catching this by the shuttle hook bobbins.if ok put thread bobbins and upper thread dial tension with the needle.Move machine on handwheel try to catch the bobbins thread,If this so your machine is ready to sew again if problem occurs on alignment repeat adjustment on perpect alignment,besure all parts on upper casing of machine specially two drive gear are in normal alignment.
NEVER force a newer model machine. Everything inside is plastic and WILL break. Remove the needle, bobbin, bobbin case, and unthread the machine. See if the handwheel turns. If it doesn't, several things could be wrong. The lower end machines won't have belts to come off, they will be fully gear driven. If it is a better machine, it might be a belt problem. Small pieces of thread could be stuck in a gear mesh somewhere. A gear could be broken. It is possible for a gear to break on the first use.