Well, I always know that the hottest part is under the most stress. That would be the bottom right corner or exhaust valve area. Start above it at that side at 60 in-lbs, move across opposite the same, up to the same, across to the same (bottom right), and continue in a back-and-forth motion around the head in a clockwise direction (kinda) until done. Now redo at 120 in-lbs, and finally at 165-185 in-lbs. See the272262 manual linked below (it is over 10 MB though):
The torque sequence for a single cylinder Briggs and Stratton engine horizontal shaft head is increments of 2's for hp and 1's for head bolts. That makes 11 head bolts for an 18 hp.
220 in-lbs
Get the model # and click the link I will post.
160 inch/pounds
220 in. lbs.
Cylinder Head Torque is 190 inch pounds or 22.0nm
122inch lb
It is important to know the head bolt tightening sequence and the torque of a vehicle. For the Fiat Punto it is 20nm, 30nm, 90 degree turn, 90 degree turn, then in order 8,6,2,5,10,7,3,1,4,9.
I would recommend that you consult a repair manual for torque values as well as tightening sequence
What_are_the_torque_settings_and_tightening_sequence_for_the_cylinder_head_bolts_on_a_Rover_200_K-series_engine
185 in/lbs. or 15.5 ft/lbs.
5/16 bolts 25 ft/lb