8 of 271
Critical Measurements 262
Introduction 262
Needle Drive Stud to Reciprocator Fit 263
Hook Timing 263
Upper Arm to Lower Bed Alignment 263
Needle to Hook Gap 264
Hook to Rotary Support Gap 264
Take-Up Lever Stroke 264
Take-Up Lever Fit to Shaft 265
Take-Up Lever Endplay 265
Cam Follower Preload 265
Pull Force on Take-Up Lever 266
Color Change Lead Screw 266
Color Change Housing Location 267
Bobbin Tension 267
Presser Foot Adjustment at Bottom Dead Center 268
Thread Feed Forward 200 269
Needles 269
Thread Clean Thread Path 270
Z-Belt Tension 270
X-Cable Tension 271
Y-Axis Timing Belt Tension 271
Proper Lubrication of Moving Parts 271
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