Replies

1. 
   Don01 | Jan 25, 2010 11:45am | #1

   On the back of the upper frame, there should be a star knob which control the vertical angle of the upper wheel.

   With no blade, back off this adjusting rod so the upper wheel can tilt freely in either direction. Place a straight edge across the lower wheel so it makes contact on both edges and passes as close to the center as possible. If you cannot make 2 point contact with the upper wheel, the two wheels are not coplanar. If you cannot achieve 4 point contact, you will have to shim either the upper or lower wheel to get it close. Don't get to hung up on getting it perfect. Anything less than 1/8" is not likely going to cause any issues.

   With very light tension on the blade, go through the same straight edge procedure. The straight edge should make at least one point of contact on the upper wheel. Adjust the tracking knob until you get two points of contact on both wheels.

   Increase the tension appropriately and make a cut. If the tracking is off and you cannot cut a straight line - drift, adjust the tracking until it does.

   Check alignment and clearance of guides, condition of tires etc. Start with new blades and makes sawdust.

   If you have access to back issues of FWW or an online membership, here are a couple of excellent resources.

   https://www.finewoodworking.com/ToolGuide/ToolGuidePDF.aspx?id=24093

   https://www.finewoodworking.com/SkillsAndTechniques/SkillsAndTechniquesPDF.aspx?id=2795

1. 
   gmberkley | Jan 25, 2010 11:59am | #2

   thank you very much for the reply, tonight I will do exactly as you recommend.

   thanks again, Gregg

2. 
   WillGeorge | Jan 25, 2010 12:11pm | #3

   Sorry.. I could find nothing on the model JBS-14 stock number 70852...

   .... however, the bottom tire is level

   .... top tire is angled away from the bottom tire by 3/8" minimum

   I do not have a Jet but I would 'think' that the top wheel is normally used for blade tracking..

   See this link.. Maybe like your saw? See page 18.

   http://www.rockler.com/tech/WMH/M_708115K.pdf

   And then again maybe the rubber? tires are messed up?

1. 
   gmberkley | Jan 25, 2010 12:28pm | #4

   Thanks for the link, I will print it out and see if is my machine, or at least similar. thanks again, Gregg