I installed a conversion kit on my hatachi 120 and now it either Boggs the motor down or kills it !!! Not knowing if I should add shims or remove them ??? But other than that it solved my original problem
Good day The attached may help you follow the ssytem. Kind regards Uffex
@Donnyd , I think when you install the manual kit, you have to unplug the pump computer as it is all bypassed now. I read that on another thread here somewhere that did Hitachi manual conversions.