Re: '59 Johnson 35/2 questions
Hi dostoy<br />Remember, you need to dial in the high speed needle first. In order to do this correctly the motor needs to be at full throtle. This is almost impossible to do in a test tank with out a test wheel. Now, the high speed needle meters the amount of fuel for the high speed circut (the main nozzle), it also meters the amount of fuel available to the low speed circut. The low speed needle controls this available fuel. The low speed circut will only function when the throtle valve (the butterfly) is fully closed. So in order to adjust the low speed needle the throtle valve must be closed. At 24:1 these older motors will smoke a bit more than the newer ones. How ever it isn't all that much and at high speed it should be barely noticable if at all. The reason you have too much smoke is there is something wrong. To adjust the needle valves the rest of the fuel system has to be in order as well. AS paul suggested you my have crud in your low speed circut. Remove the needle and clean the passages with spray cleaner and compressed air. You may have an air leak at the connector,the needle packing,etc. This would tend to cause a too lean condition. The float may be out of adjustment. Remove the knobs and linkages to the needles when setting and making adustments. Use your bars fingers, This will help prevent getting false readings. When you lightly seat a needle it will be seated and not against a stop on the knob,etc. Be sure the packing nuts are just snug. this prevents the needle from virbrating loose and causing excessive wear. Remember too much smoke equals too much fuel and not enough air, not too much oil, usually. I have had fella's who's math skills were something to be desired. I think they forgot to add the gasoline to the tank. I have also seen many chain saws with the fuel tanks full of bar oil.
