When to turn the pilot screw out on a jet?
Turn out 1/4 turn at a time (wait 15 seconds between each 1/4 turn adjustment to give engine time to adjust) until highest RPM idle is obtained. Normally do not turn the pilot screw out more than 2.5 turns. If you must turn it out more than 2.5 turns go up to the next larger pilot jet. If you have an air screw it will be just the opposite.
Can you go up one pilot / slow jet at a time?
Go up 1 pilot/slow jet at a time, don’t skip sizes. After installing a larger pilot/slow jet, re-adjust the pilot screw. Now take it out and test ride at 1/4 throttle. If the pilot/slow jet is correct it will be easy to maintain a steady speed.
What to consider before ordering a rejetting jet?
Confirm jet dimensions before ordering. The first thing to consider before rejetting is get all jets from 1 place that is strict about the quality of their jets. Our goal is consistent jetting results. All our jets have been manufactured in the same plants since we opened.
When to increase the size of the main jet?
A general rule is to increase the main jet as long as each jet causes the engine to run as well as or better than the smaller jet in it before. When there is no longer any additional performance gain from the larger jets the jet size is too big – go back down one size. Note that the long piece below is not the main jet:
Turn out 1/4 turn at a time (wait 15 seconds between each 1/4 turn adjustment to give engine time to adjust) until highest RPM idle is obtained. Normally do not turn the pilot screw out more than 2.5 turns. If you must turn it out more than 2.5 turns go up to the next larger pilot jet. If you have an air screw it will be just the opposite.
What should I consider before rejetting a jet?
The first thing to consider before rejetting is to get all jets from 1 place that is strict about the quality of their jets. Our goal is consistent jetting results. All Jetsrus jets have been manufactured in the same plants since we opened. That means if you need a jet 1 size up or down that is what you will get from us.
Go up 1 pilot/slow jet at a time, don’t skip sizes. After installing a larger pilot/slow jet, re-adjust the pilot screw. Now take it out and test ride at 1/4 throttle. If the pilot/slow jet is correct it will be easy to maintain a steady speed.
Why are jetsrus Jets made in the same plant?
Our goal is consistent jetting results. All Jetsrus jets have been manufactured in the same plants since we opened. That means if you need a jet 1 size up or down that is what you will get from us. If you buy from a different store today, and need more jets in the future they may not be correctly sized.
