IJSBA · Fuel

Carb jet kit, needle valve, needle valve spring

The rebuild/tuning tier that stays legal in closed-list classes.

---

This is one body's answer, not the sport's. You are bound by whichever body sanctions the event you enter, and where both govern you, you are held to the stricter of the two. The differences are set out in the rulebook comparison.

Where it stands, class by class

20 classes, grouped by the answer rather than listed one by one, because an answer that holds for a class usually holds for every class that borrows its rules.

Not permitted, not listed in the rules Our reading, not a rule we can quote at you. This class requires the craft to stay stock except where the rules allow otherwise, and this part is not on the list.

Not permitted, not listed in the rules 4 classes

Not listed in this class document. Illegal under the closed-list principle.

• Four Stroke Ski Lites · FSKL
• Ski Modified · SKM
• Runabout Limited · RAL
• Ski Superstock · SKSS

The rules do not say 1 class

Not addressed in this class document.

• Runabout Open / GP · ROP

Legal 8 classes

Explicitly permitted by this class document.

• Vintage Ski Limited · VSKL
• Runabout Naturally Aspirated · RNA
• Vintage SC · VSC
• Vintage X2 · VX2
• Vintage Ski · VSK
• Freestyle · FREST
• Ski Grand Prix · SKGP
• Sport GP · SPGP

Legal 1 class

FSSK.4

• Fixed Steering Ski Stock · FSSK

Legal 1 class

RRL.4.2

• Runabout Rec Lites · RRL

Legal 1 class

Where a carbureted craft applies. · SSK.4

• Ski Stock

Legal 1 class

RAS.6

• Runabout Stock · RAS

Legal 1 class

Changes to replaceable-type jets, needle valve and needle valve spring. · SKL.4.1

• Ski Lites

Legal 1 class

Rejetting and de-choking explicitly allowed on all models including the · HX

• Sport Spec

Legal 1 class

RSS.5.6

• Runabout Superstock · RSS

---

Carb jet kit, needle valve, needle valve spring: if the rule your class applies reads differently to you, or the rulebook has changed since this was read, ask. We answer with the section we read it from, or that we have not read it. Ask a rules question.

Every IJSBA class · where the rulebooks differ · signed checks on parts the shop sells.