What is the proper chain tension for cold operation?

• A. The chain should be pulled tight so it cannot rotate.
• B. There should be no slack at all.
• C. The chain should be visibly loose and sagging.
• D. There should be a small amount of slack so the chain can rotate freely without sagging or binding.

Answer: (D)

In cold operation, the chain should have a little play to accommodate how materials change with temperature. A small amount of slack lets the chain rotate freely when it’s cold, without binding or sagging, and it also anticipates tightening that will happen as the chain and bar heat up during use. If it’s pulled tight or has no slack, it can bind once the saw warms; if it’s visibly loose and sagging, it can derail or come off the bar. So the best approach is a small amount of slack that allows free rotation without sagging or binding.