Hi, I just recently purchased a Mercury 75 (7.5hp) outboard motor from one of my dad's friends. It has been setting on a flat bottom for about a year or so now and when I fired it up it didn't pump water very well. So I replaced the impeller and now it pumps fine. We also had to replace the gas line on the inside of the motor because it was leaking. Now when I run it, it takes more than it should to get it started and refuses to idle. I'm thinking I need to replace the spark plug among other things. So could anyone tell me what kind of spark plug I need? The serial number is 2634501 and the front has a shiny part that says "lightning ignition". Also I read that I might have something wrong with my fuel pump diaphragm. Should I try to replace this too? if so where can I get the parts I need? thanks!
alright i'll give that a shot when next time im home (at college right now). Another thing i just remembered. When i had it warmed up pretty good and tried to get it to idle, it would backfire quite a bit, and then die shortly if not immediately after. Still sound like a carburetor problem?
I talked to my dad and he said that when I take apart the carb to clean it i should have rubber gaskets and diaphragms to replace when i clean it. Is this true? where can i get these and what kind do i need? thanx!
Mercury 75 spark plug
Linear Mode
