carb adjustments

[cobweb]

how do you adjust the 70 h. p. Chrysler, and what would the fuel oil mixture be..Thanks

 

[steelespike]

Re: carb adjustments

Really need a model number to be sure what you have.
Most likely fuel mix is 50:1 Idle mix screw should be one turn out from gently bottomed.Final adjustment done warm at idle in gear. Final adjustment should be slightly toward rich.High speed is a fixed jet.

 

[steelespike]

Re: carb adjustments

Lets start with the model number.Then you should really get a saervice manual.Sometimes you can find them at the library.You can buy right here at iboats among many other sources on the web.Let us know what your boat is and your typical load and activities.Start with a compression check at least 100 lbs.specs are 130-140 psi at cranking speed.