This is a scan of page 15 of the original Owner's Manual

MAINSHEET (Drawing 3 above):

ATTACH THE mainsheet ratchet block to the base.

TIE-DOWN the traveler bridle to the eyestraps on both sides of the cockpit floor with the lower mainsheet block in the center of it.

TIE-DOWN the mainsheet to the becket of the upper mainsheet block on the boom, run it down through the lower mainsheet block and up again through the upper mainsheet block and exit it throught the ratchet block.

ADJUST THE position of the cam cleat on the ratchet block for your convenience (usually it is in the uppermost position).