Understanding the Weber
Posted: Mon Aug 25, 2014 12:26 pm
I have finally got round to having a go at adjusting the Weber. It has always seemed sluggish at low RPM and the plugs are always fairly black although I have done very few miles on it as I am only occasionally re-united with the bike. I have now adjusted the float height to 42mm. I don't remember what it was previously but it was greater than that.
When I read the manual it suggests (as does the diagram) that the air adjusting screws are higher (towards the petrol tank) than the idle mix adjusting screws. From the diagram these are the ones that can reached with the air filter in place. Indeed the idle mix adjusting screws seem to be the ones that are at 45 degrees to the carb. Once the air filter box is on it is impossile to adjust what it calls the idle mix screws unless the air filter element is taken out and the rubber caps are removed. This would make a mockery of setting the idle mix. Is the manual wrong and has confused which is which.
Once I know which screw is which I will let you know how many turns mine were out.
Thanks.
When I read the manual it suggests (as does the diagram) that the air adjusting screws are higher (towards the petrol tank) than the idle mix adjusting screws. From the diagram these are the ones that can reached with the air filter in place. Indeed the idle mix adjusting screws seem to be the ones that are at 45 degrees to the carb. Once the air filter box is on it is impossile to adjust what it calls the idle mix screws unless the air filter element is taken out and the rubber caps are removed. This would make a mockery of setting the idle mix. Is the manual wrong and has confused which is which.
Once I know which screw is which I will let you know how many turns mine were out.
Thanks.