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General| Brand | Riccar |
|---|---|
| Model | RL-333 |
| Category | Sewing Machine |
| Language | English |
Machine must be used on a flat, horizontal surface or sewing machine table.
Connect controller connector to machine, then plug to power source. Disconnect when not in use.
Operate pedal for speed control. Lift foot to stop.
Machine speed is 1300spm. Motor runs in opposite direction to domestic machines.
Motor may get hot with continuous use, but it won't affect performance. Sparks are normal.
Check belt tension by pressing the center; it should flex about 10mm.
Lightly oil indicated points before use. Oil bushings and moving parts 1-2 times a month.
Slide looper cover lever in arrow direction to swing open.
Push cover towards machine until it snaps shut.
Ensure correct threading for a well-formed seam. Thread looper threads first.
General threading steps starting with the left looper.
Step-by-step guide for threading the right looper after the left looper.
Step-by-step guide for threading the needle after loopers.
Insert test material, hold threads, turn pulley, check interlocking, and sew slowly.
Proper stitch formation is shown. Tension varies by cloth and thread type.
Adjust tension using dials. Describes scenarios of loose/tight needle or looper threads.
Sew off about 5cm thread chain, cut near fabric, leaving 3cm chain.
Tie thread chain end. For knits, use latch needle to pull thread into seam.
Sew off 5cm chain, turn fabric, sew back along seam to prevent unravelling.
Adjust pressure for fabric weight. Push center to increase, outer rim to decrease.
Adjust upper and lower knife carriers to change seam width.
Narrow seams can be sewn by changing the needle plate.
Hold pulley, loosen feed regulator nut with screwdriver to allow adjustment.
Align regulator nut with number. Higher number for longer stitch, smaller for shorter.
Tighten feed regulator nut and close side box after making adjustments.
Turn pulley clockwise, loosen needle clamp screw, pull needle out with tweezers.
Push needle fully into holder, ensure long groove faces forward, tighten screw.
Loosen upper knife guide screw and remove knife upward.
Loosen lower knife clamp screw and remove knife downward.
Cause: Presser foot pressure too weak. Adjustment: Increase pressure.
Cause: Bent/damaged needle, incorrect fitting. Adjustment: Replace/refit needle.
Cause: Incorrect threading, tangled thread, tight tension. Adjustment: Re-thread, check thread.
Cause: Bent/damaged needle, incorrect fitting, threading. Adjustment: Replace/refit needle, re-thread.
Cause: Incorrect thread tension. Adjustment: Adjust thread tension.
Cause: Strong thread tension, incorrect threading. Adjustment: Reduce tension, re-thread.
Procedure for changing the needle plate to perform fold-over hemming.
Adjust the feed regulator nut to setting No.1 for fold-over hemming.
Chart for setting thread tensions for normal sewing based on materials.
Chart for setting thread tensions for narrow sewing based on materials.
Chart for setting thread tensions for fold-over hemming based on materials.
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