If you have number one piston on the T.D.C. Top Dead Center ) on the firring stroke--- you can tell this by looking down the oil filler hole, while rotating the motor back and forth if the 2 valves rock----- its not on the firring stoke its a 180 degre out ----if the don't rock its on the compression stroke -- right
-- then put the dissie in--- or take a look at the roter and where ever the roter is pointing to that is number 1 piston --one so start you firring order from there -- ask dos the roter turn non clock wise or clock wise---