G'day Kevin.

Power Torque and Full crank roughly the same as Norm Mentioned see pic below.

There are sites that you put the bolt grade in and bolt size and TPI and it gives a torque setting .

Victa bolts are probably Grade 2 low-strength

I would just put in UNC to look up the torque ,just use UNC that is the closest equivalent to BSW that Victa use when looking
up tensions.
https://www.portlandbolt.com/technical/bolt-torque-chart/

Also if you get inch pound specs you can convert to Foot pound if you only have a foot pound tension wrench.

https://www.thecalculatorsite.com/conversions/common/inch-pounds-foot-pounds.php

The threads per inch here https://www.engineeringtoolbox.com/unified-screw-threads-unc-unf-d_1809.html

Cheers
Max.

Attachments
Victa Engine Parts List and Manuals.png (2.84 KB, 28 downloads)
Bolt Torque Chart - Portland Bolt.png (29.37 KB, 24 downloads)