A few questions about a new to me 810 post bed

[Landcruzer94]

Acquired a Yamata 810 machine local to me, sold by a sewing machine repair man and seems pretty well sorted.  I researched this machine for a little while and never came across a casting like this, and it even has an integrated bobbin winder.  The peculiar thing I wanted to ask about was the stitch length wheel.  It seems to only go up to "4", but has an unmarked zone where every other machine I've seen has additional range.  Tuning it to this area seems to be okay, and it can still sew, but want to make sure I wouldn't cause any damage.  Am I good using this range, as long as the reverse bar has more room to move?  

Second, for sewing leather I definitely need a speed reducer.  I'm not seeing much space to work with under the table, how would one route the pulley?

Lastly, any good part resources one would recommend?  I have my eye on a rubber roller but wasn't sure if there were any other cool accessories that are worth looking at.  Thanks!

 

Edited April 17, 2022 by Landcruzer94

[Wizcrafts]

  On 4/17/2022 at 12:14 AM, Landcruzer94 said:

Second, for sewing leather I definitely need a speed reducer.  I'm not seeing much space to work with under the table, how would one route the pulley?

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There is a drop-down speed reducer sold by Toledo Industrial Sewing Machines. It sits under the table in place of your motor, which gets attached to the bottom of the reducer box. I have this box installed on two of my machines. It works great!