I need to know whic thermostat goes into which hole on the BF135.The reason for asking is thati was told that the two T-stats operate at different temps.
The cylinder block thermostat has 3 grooves on top of center plunger, cyinder head thermostat has 2 grooves on top of plunger.
If you standing with waterhose on thermostat housing facing away from you then the 3 groove one goes on left side and 2 groove one on right side hole in block.
BF135 Thermostat Identify
Linear Mode
