Head bolt torque for single cylinder diesel

[Oil pan 4]

I have a single cylinder yanmar diesel with aluminum block and head with copper bore gasket, 4 bolts 10x1mm thread I can't find the exact engine manual I know the torque pattern, for a single 4 bolt it's stupid easy. But I don't know the torque, I'm thinking based on other engines do about 85nM or about 63 foot pounds. Probably in 3 steps, 1/3 torque, then 2/3 and 3Rd step go full torque. It's not like I'll get out of order or I'm worried it will take too long.
How's that sound?

 

[North Idaho Wolfman]

Sounds good to me, as the bolts are 55ft lbs to 75ft lbs

 

[Oil pan 4]

I chickened out and only did 55 ft lb and it runs great.