Repair help for Janome/New Home - Memory Craft 6000
My wife has had a Memory Craft 6000 since it was under the New Home brand (now owned by Janome). She bought it back in the 1980's. It's been a rock solid machine for decades with occasional service. It gets a lot of use as she quilts and has taught many people to sew and quilt on that machine since it was purchased.
The problem is the last shop that worked on these anywhere near us closed a few years back during COVID. I do have the factory SERVICE MANUAL, and 2 spare machines that I had the forethought to acquire, one working and the other not (parts donor - as many components are no longer available).
The main drive belt broke on her primary machine this week. It had not been cleaned since the local shop closed about 5 or 6 years ago, so being very mechanically inclined and in possession of the service manual and a myriad of YouTube video's I took on the task of a deep cleaning while waiting on a belt (and a spare) to arrive.
The problem is I have a eccentric cam base (not round) adjustment screw that I found loose inside the lower drive area. Specifically near and to the left of the "stitch length stepper motor" assembly inside the case. I don't know if it was already there or if it fell out of it's position as I removed some of the base plate from the feed mechanism for the cleaning and re-lubrication.
I've been looking everywhere for a possible location where this screw belongs and just don't see a place. I've gone through the exploded diagrams in the service manual, and since the screw has a slotted adjustment type head even looked at all the alignment instructions in the service manual and don't see anything that fits.
Any help on what this is and where it goes would be appreciated.
This is the screw (I call it a screw since it has a small slotted head, but it's really not as the slotted head turns the eccentric base that would appear to be a pressure or tension adjustment for some other part. It appears to be hardened steel but there is no visible signs of wear so I don't think it rides against a moving part, just applies a set pressure on another part from the eccentric cam base. It is really small. The tape measure in in US inches.