Jeanneau403

The machine I purchased is also a H4. Manual for the 545 lists needle sizes based on models A, B C etc, maximum thread size is not the issue. The Gortex Tenera thread is similar to v-92 thread. They recommend (Tenera) a smaller needle #14, #16 when using the thread.. Pfaff manual says model “c” minimum needle size is #18. Is this based on thread tensioner, needle bar, what?? Model B minimum needle size is listed as a #12. pfaff 138 sews with the Tenera and sunbrella well, but purchased the 545 for the walking foot, not sure if I have purchased a machine that won’t work with the needle & thread recommendations and the use of the specialty Tenera thread for prolonged outdoor UV exposure.

Hello, I have purchased a 545 model C, it appears most folks have asked the question how thick of material can be sewn, my question is kind of the opposite. I have purchased the machine for doing boat canvas (sunbrella) work. I have been sewing with a pfaff 138 with Tenera thread and #14 needles. With the Tenera thread the smaller needle diameter works better. It appears a number #14 needle is smaller than recommended for the model c 545, is this a thread tension spring issue? Thoughts? I am asking on this forum as this forum has the most information on the practice use of the 545. Thanks in advance for any insight.