ok, i measured my spark plug on my 74 550 and an 18mm socket fits on the plug. the socket wont fit to reach the 2-3 plugs so i know i need a spark plug wrench...didnt wanna pay $20 at Honda for a wrench, so I bought a kimpex spark wrench for $5 off babbits or one of those sites. and its too big. says fits 18 and 14mm plugs. wont even clear the rockers to get to the head. whats my problem here?
prob. shoulda just went with the $20 honda one to begin with. duhhh.