I've been having an idle problem with my 93 50 Evinrude so I got a Clymers manual from the library. (I know..I know...factory manuals are better.)
I thought I would tinker with the idle and linkages to see if I could improve the idle. The manual shows that the roller on the spark cam follower should line up with the 2 arrows the cam itself. Mine doesn't. I checked the starting default distances marked in the manual for the throttle control rod, spark control rod, and idle speed screw in the link/sync procedures. The control rods were right on and the idle speed screw was a little less than the book shows.
I can't figure out why the arrows on the cam are so far off the cam follower roller. I took a picture and was going to post it but I could not find my cable for my camera. (I looked for it for over an hour!) Anyway, I found a photo on one of tashasdaddy's posts so I "borrowed" it for this post. (I hope you don't mind tashasdaddy.) I believe this is the same motor.... it looks exactly like mine. In this photo, the situation is just about exactly like mine. The arrows do not line up with the follower. (You have to look close for the arrows on the cam... look about 3/8" or so below the bushing) Is the manual I have wrong or is it normal for these arrows not to line up with the follower bushing?
I tinkered with it and got it to idle better but I still think I need to check the timing (I don't own a timing light yet.) and perhaps do the full link/sync procedure. It still doesn't seem quite right to me but it will idle without dying now. The tach shows around 900 at idle in gear and I know it should be a little less. When I adjust the idle screw any further, it will die.
If anyone can explain the arrow problem on the cam, I'd appreciate it.
By the way, my cam follower bushing is starting to break away on the back side. It isn't affecting anything (yet) but I thought I should replace it. I checked the price on-line and it lists for 13.36. (part# 432572) That seems ridiculous for a plastic bushing. I know outboard parts are high but that is kind of crazy. When I looked it up, I was expecting it to be 3.00-4.00 and I even thought that was high for what the part is. Has anyone ever tried to use any thing else for one of these parts? (Like a standard bushing of some sort found at a hardware or auto parts store?)
Thanks for the help.
I thought I would tinker with the idle and linkages to see if I could improve the idle. The manual shows that the roller on the spark cam follower should line up with the 2 arrows the cam itself. Mine doesn't. I checked the starting default distances marked in the manual for the throttle control rod, spark control rod, and idle speed screw in the link/sync procedures. The control rods were right on and the idle speed screw was a little less than the book shows.
I can't figure out why the arrows on the cam are so far off the cam follower roller. I took a picture and was going to post it but I could not find my cable for my camera. (I looked for it for over an hour!) Anyway, I found a photo on one of tashasdaddy's posts so I "borrowed" it for this post. (I hope you don't mind tashasdaddy.) I believe this is the same motor.... it looks exactly like mine. In this photo, the situation is just about exactly like mine. The arrows do not line up with the follower. (You have to look close for the arrows on the cam... look about 3/8" or so below the bushing) Is the manual I have wrong or is it normal for these arrows not to line up with the follower bushing?
I tinkered with it and got it to idle better but I still think I need to check the timing (I don't own a timing light yet.) and perhaps do the full link/sync procedure. It still doesn't seem quite right to me but it will idle without dying now. The tach shows around 900 at idle in gear and I know it should be a little less. When I adjust the idle screw any further, it will die.
If anyone can explain the arrow problem on the cam, I'd appreciate it.
By the way, my cam follower bushing is starting to break away on the back side. It isn't affecting anything (yet) but I thought I should replace it. I checked the price on-line and it lists for 13.36. (part# 432572) That seems ridiculous for a plastic bushing. I know outboard parts are high but that is kind of crazy. When I looked it up, I was expecting it to be 3.00-4.00 and I even thought that was high for what the part is. Has anyone ever tried to use any thing else for one of these parts? (Like a standard bushing of some sort found at a hardware or auto parts store?)
Thanks for the help.
