craftsman 3.7 by roper sprocket

[gosaw]

My $5 auction saw needs a new sprocket. The old one is a 3.25 - 8 tooth 7 spline that is worn out . I have a new oregon 3/8 standard chain that I got for it before I got the sprocket off and saw it was 3.25. The ID measures 3/4 inch and the sprockets on ebay say large or small ID but don't give the actual size . Does oregon make a 3/8 standard 7 spline 3/4 ID sprocket and how do I know I'm ordering the right size sprocket ? I appreciate any info Thanks

 

[Pepster]

Edit: Sorry I misread...

 

[Pepster]

Oregon SM is small
SD is Standard
SD 6 may be what your looking for (LARGE).
You should download the Oregon PDF, it comes in very handy with crank sizes, bearings/seals...

 

[gosaw]

Oregon SM is small
SD is Standard
SD 6 may be what your looking for (LARGE).
You should download the Oregon PDF, it comes in very handy with crank sizes, bearings/seals...

Thank you. Mine is 19mm,