Hi Farmall47, I looked in my Operator manual:
Points - 0.014,
Plugs - 0.024 to 0.026
Tappet(Hot) - 0.022
And for timing consult IH but I searched this site and found:
Your BC144 engine does not have a timing chain. Set points as .014" Static timing (non running or idling)for early engines is 5 degrees BTDC. Timing at high RPM at full advance is 39 degees BTDC. Timing marks are on the crank pulley.
Hope this helps