Hello,<br /> First, I'd like to say that this is a really great forum. I searched for my questions, so if they have been covered before, sorry 'bout that! <br /> I've got a '90 model 60 hp Johnson Tracker pro on a 24 ft. pontoon. I've ordered a manual for it but, until it gets here I have a few questions. <br /> I drained the lower unit grease and it was really black and smelled almost like diesal. What gives?<br /> I was checking the plugs and found that they were barely tight. The crush rings on them weren't even crushed at all. It looks like oil has been running down from the top plug down the engine. The other plugs had some oil around them too but not actually on the working area of the plug. The gap was 030. on them.<br /> I'd like to check the compression. What should it be?<br /> I'd also like to verify the tach. What's easiest/best way to do it? Thanks.<br /><br />Dan
