[markatmfasis]

I recently inherited a this little Mercury and have plans to use it on my dink. It is in surprisingly good shape so I decided that I would start fresh by cleaning and rebuilding the the carburetor and changing the water pump impeller and lower end oil.

I should start by stating that, prior to doing any work, I took it out for a spin to see if it ran. It started up immediately and idled nicely with full choke. The only problem that I encountered during this test was when, after letting it warm up, I tried to open the choke. The motor would die. I was able to start it up no problem as soon as I applied full choke again. I was able to gradually open the choke while, at the same time, increasing the throttle. Is this normal behavior?

I decided to go ahead and rebuild the carburetor, after reading my repair manual. The rebuild went smoothly. I also cleaned out the fuel tank. The spark plug looked fine. The interesting thing is that, after all this work, the motor ran exactly the same. It displayed the same symptoms I listed above.

I can only see three things on this carb that can be adjusted:

1. float valve - I installed a new needle valve seat, needle valve, float and float hinge as they were included in the rebuild kit. I adjusted the float as per the instructions in the manual.

2. low speed idle screw - I cleaned this and set it back to its original position. Low speed idle appears fine.

3. What the parts diagram calls the jet needle - I replaced this as well as the e-ring. According to the manual, raising the e-ring will give a lean mixture and lowering will give a rich mixture. I placed the e-ring in this same position it was in prior to the rebuild. After the initial test where the motor displayed the same symptoms, I raised the e-ring. This did not seem to make anything better.

Is it normal to have to adjust the choke open while increasing the throttle?

On my 9.9 evinrude I was able to open the choke after the motor warmed up sufficiently and operate the throttle normally.

Any help is much appreciated.

Mark

[Salluste]

I have the same motor. To start it I have to leave the choke at the close position and once it is going I just give it more gaz. But I have another problem.
You know the cover on the carburator, the throttle cover . The is gaz leaking at the bottom of the cover. The previous owner seems to have put some kind of sillicone to stop the problem. Do you have the same problem ?