Class 80800 PM

1. (Cont'd) When the machine is out of operation the oil flow can be stopped by tilting lever, D, Figure 1, on the sight feed oiler. IMPORTANT! The oil flow has to be switched on again before operating the machine.
   

2. Next check the machine for proper threading, Figure 2. Improper threading can and will cause skipping and improperly formed stitches. Also check the condition of eyelets, tension discs and other thread handling parts.  
   

3. Check the crankshaft for end shake. If some shake is detected, first check the hand wheel pulley attaching screw for tightness, A, Figure 3, Then check collar, B, Figure 3. Adjust as needed.  
   

4. Check the feed drive components, looper drive and looper thread control components for wear and proper adjustment, Figure 4. Also check looper tip and needle tip for burrs and damage. Repair or replace as required.  
   

5. With the needle and feed dogs in their lowest position make sure the presser foot is flat on top of the threat plate, Figure 5, and there is a gap between the presser foot lifter lever stud and the presser bar lifter collar, Figure 6,  If the presser foot is hung, the material will not feed properly.  
   

6. All other adjustments and correct parts can be found in catalog #137M for older 80800 E, F & H styles. And catalogs #285 for newer style machines.

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