1st off thank you for all the previous info. What i would like to know is about a prop and am having trouble navigating this website so i apologize if i ended up in the wrong catagory. I may need to replace my prop due to a spun hub on a merc 115 blue band my # is 48 77344 a40 17p a guy has a prop off a i/o mercruiser his # is 48 788120 a40 19p will this work ? I also was told how 2 check & see if my hub was spun by marking the prop & hub,launch my boat,run it & pull it out & see if the marks are off I do not disagree with that ,but another guy (not from this site but an experienced driveway marine mechanic ) says no need to launch boat just c-clamp the prop in a way to impede it"s ability to rotate , start the boat and just slip it into gear and if it keeps running my hub is spun i was cocerned about additional damage but he says it will stall the engine & that it's just slip it into gear and no more . This sounds alittle hinky to me,but once again i am back to see what y'all think. It usually would not be that big a deal to launch my boat,but ( not going for a sob story here ) i watch my three grand daughters during the day and my 4 year old has lukemia and has been in and out of the hospital the last couple of weeks and has been throwing up and running a fever so if i'm needed i don't want to be out testing my boat hence the thought of testing it at home has it's appeal. Once again i apologize for being long winded but would like to try & have my boat ready this weekend as i have a 15 year old at home that is chomping at the bit to take the boat out fishing & i told him he could start learning how to operate the boat already started him on launching & loading the boat Thank you for your input AND your patience
