04-23-2021, 10:56 AM
If you don't pull down first you are starting the measurement with some slack (or droop) in the top run... so the total slack isn't taken up for the lower measurement. If you remove the chain guard to see the upper run and put it in neutral, you will see that the total droop is split between the upper and lower runs. The chain will push up to the same height for either method, so you aren't measuring the total slack unless you pull down first.
