Baby Lock Pro Line BL4-838D Instruction Book

Also see for Pro Line BL4-838D: Service manual

Contents

Baby Lock Pro Line BL4-838D Instruction Book Manual pdf 34 page image

18 TROUBLE SHOOTING GUIDEBefore taking your machine in for service, check the following:* Machine fails to start …1. Are electrical plugs properly connected?2. Is the power switch turned on?3. Check household circuit breaker or fuse.* Thread breaks…1. Is machine threaded correctly? Check each thread guide, all tension discs.2. Did you unthread the needles before rethreading the lower looper?3. Is the needle inserted correctly?4. Is the needle blunt?5. Is tension adjusted too tightly?6. Is tension adjusted to accommodate thickness of thread being used?7. Are you using inferior quality thread?8. Is thread feeding off spool/cone freely?9. Is the needle size correct for the type fabric being used?* Fabric will not feed into machine…1. Is the presser foot down?2. Are the knife blades sharp?3. Are the knife blades clean of lint?4. Is the presser foot properly adjusted?5. Are the feed dogs and presser foot free of lint?6. Are the knives properly set and is the upper knife against the lower knife?7. Is stitch length set properly?* Seam unbalanced…1. Is the serger threaded correctly?2. Is the needle tension too loose for type fabric being used?3. Are the looper tensions properly adjusted?4. Is the thread in the tension disc?5. Have you changed to specialty threads are not made tension adjustments to accommodate thread thicknessvariation?33Downloaded from www.Manualsoncd.com

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