RE: magnum .91 4 stroke advice needed
yes , sorry all I mean is as follows.
Remove plug , and add some after run oil , add some oil to the carb , very gently turn the prop , allow the oil to works it way in . WIth the plug removed hold the engine upside down and allow it to drip out so that you dont have it pressure lock .
I added oil before every break in run , then after run , allowed to cool added some more and hand turned the engine . I ran three tanks , let it rest and came back the next day and added the after run oil and started the process agian ,you lean it out as you go