Quade Report post Posted May 10, 2023 (edited) My 211A has easily a 1mm of backlash in the gear meshing between #4 and #5. I don't really know how much is too much. It would probably be better if I had less backlash but I see no way to adjust it out. The distance between the gears seems fixed. I wonder of the timing adjustment impacts the backlash? I could try moving #4 to the left and right to see if the backlash changes. It sews pretty well. I have almost no up and down in the hook shaft itself. I haven't thrown a dial indicator on it to measure but I could. Have you checked the calibration of your case opener? "Be Sure Hook Driving Gears are Correctly Set with relation to the face of the hook saddle. Use .008" Shim". I'm imagining we use a .008" shim between the gear and the saddle to set end-play? It's not clear from the manual. Edited May 10, 2023 by Quade Quote Share this post Link to post Share on other sites
Coeta Report post Posted May 10, 2023 (edited) I will check out the case opener as that is the only thing I have not really checked, just eye balled it, I can also confirm that there is no up or down movement in the hook and this cannot be adjusted on the 166 As for the statement: Be Sure Hook Driving Gears are Correctly Set with relation to the face of the hook saddle. Use .008" Shim". I'm imagining we use a .008" shim between the gear and the saddle to set end-play? It's not clear from the manual. I am not understanding this .... Edit...got a more english version of the manual and it's more clear now, checking the distance I can confirm it's much more than 1mm I will need to fix this... Edited May 11, 2023 by Coeta Quote Share this post Link to post Share on other sites
Coeta Report post Posted May 11, 2023 Also checking on the parts list for the hook pinion gear, I noticed that there is thrust washer present 224022, that is the part that is missing where I have lifted up the lower bush to take up the free play. Quote Share this post Link to post Share on other sites
Coeta Report post Posted May 11, 2023 Got it fixed but then I adjusted the pressure foot height as I was working with thick leather, then it did sticth anymore doesnot pick up the stitches, so I guess i did not tighten the gear screws enough..at least I know where to fiddle now Quote Share this post Link to post Share on other sites
Quade Report post Posted May 12, 2023 (edited) Looks pretty good. I'd be interested if you come up with some solution for the backlash. I don't believe any of my other machines are that loose. I just checked a Consew 224 with the same shaft and gear arrangement and it has backlash too perhaps marginally less than the 211. The case opener is adjusted so there's "two paper thicknesses" of gap between the case opener arm and the bobbin holder when the arm is all the way to the right. I wish they mentioned the actual thickness so I could throw a feeler gauge on it. I have a feeling the case opener arm reduces the impact of the backlash. Edited May 12, 2023 by Quade Quote Share this post Link to post Share on other sites
