Should not be an issue...they just slide in and no special position. The O-ring on the housing can give you fits sometimes. Lube it with some silicone grease. Do check that you have the right starter. 2012+s won't fit the older ones I hear.I have a 2006 750 BF and trying to change the starter. I have the old one out and am trying to align the splines on the new one to install. Are there any tricks to alinging the splines? I am having a hard time doing so.