"check my last post, i think i
"check my last post, i think it is the top cyl. it has been years since i have messed with the fuel pump.
checking the timing... when you set your timing and you want the thing to run as good as it should, you need to do it at WOT. pulling the plugs and spinning it with the starter is okay to let you know it will run, hut you need to do it with the motor running AND IN WATER, don't do it with muffs... aside from over reving it has to have the back pressure and be under a load. go to the bay or lake which ever, leave your boat on the trailer and leave the back of the boat tied off to the trailer just like when you hauled it down there, then let the motor warm up, after it has warmed up you can put the timing light on it and run it at WOT without a problem. this is the best method i have found, some people will tie off to a dock but on the trailer gives you the best plateform to work from and it is safe, don't try and do this with the boat moving it is to hard to do any kind of a good job with the boat moving. just leave it on the trailer and after you set the timeing just pull up a little and un tie it and put it back in the water and take it for a test run. make sure you know where the timing should be, it isn't always on the timing marks shown at the flywheel. they have changed the timing from the original settings on several models so make sure you know what it should be timed at. just like with the carb adjustment, if you have it to far advanced, it may run a little better but it will also run a little hotter and that is not a good thing"