andrey_2004
Cadet
- Joined
- Jun 3, 2011
- Messages
- 12
I have a 1995 or a 1997 Evinrude 40 hp outboard - 2 cyllinder 2 stroke, carbs, electric start.
Used to work fine until a year ago I had to turn the throttle about 1/5 of full travel to keep it at idle, otherwise it would shut off.
Re-built the carbs, needle turned to factory (2.5 rotations out). Both are opening at the same time, although the start to open after my throttle is turned about 35% of full travel.
Then I checked the timing, and at idle, it was at about ~ -10 degrees and at full throttle it would only get to about +4-6 degrees. In order to make it idle at about -2 degrees and +16 degrees at wide open, I had to turn the adjustment linkage about .5" clockwise, which basically maxed out the adjustment screw (closed the gap on adjustment linkage) and so when my throttle is at max, then the timing advance is at its max, I made sure that it doesn't break that timing adjustment device off. Anyway, I haven't tried it on water, but my questions are:
Is it normal that I had to adjust the timing advance so much? Is it possible that something got twisted mechanically? Is it possible that the marks are not displaying the correct timing? I don't know much about this, and I couldn't find this information in the manual I used from my local library (online resource) It just said to adjust it so that its at about +18-20 degrees at full throttle.
Will my timing be different with load on it when it will be in water?
Many thanks!
Used to work fine until a year ago I had to turn the throttle about 1/5 of full travel to keep it at idle, otherwise it would shut off.
Re-built the carbs, needle turned to factory (2.5 rotations out). Both are opening at the same time, although the start to open after my throttle is turned about 35% of full travel.
Then I checked the timing, and at idle, it was at about ~ -10 degrees and at full throttle it would only get to about +4-6 degrees. In order to make it idle at about -2 degrees and +16 degrees at wide open, I had to turn the adjustment linkage about .5" clockwise, which basically maxed out the adjustment screw (closed the gap on adjustment linkage) and so when my throttle is at max, then the timing advance is at its max, I made sure that it doesn't break that timing adjustment device off. Anyway, I haven't tried it on water, but my questions are:
Is it normal that I had to adjust the timing advance so much? Is it possible that something got twisted mechanically? Is it possible that the marks are not displaying the correct timing? I don't know much about this, and I couldn't find this information in the manual I used from my local library (online resource) It just said to adjust it so that its at about +18-20 degrees at full throttle.
Will my timing be different with load on it when it will be in water?
Many thanks!