What is the purpose of this piece?

The adjustment screw is the key component to refine your control according to the path of the circuit:

1. Preload management: Its role is to compress more or less the standing spring.

   • By screwing: You compress the spring, the valve offers more resistance and opens later (more "coupleux" at the bottom).

   • By unscrewing: The spring is more free, the valve opens earlier (more "bright" engine in the towers).

2. Clicks lock: The screw is designed to provide notches (clicks) perceptible. This allows the driver or mechanic to memorize specific settings and return to a known basis from one session to another.

3. Ergonomics: Its knurled shape allows a quick hand adjustment, even with gloves, without the need for tools, ideal for adjusting its engine behavior directly in the stands or the pre-grid.

💡 Michel's trick

"Listen well, that's where the tenths earn! The standard setting is often between 12 and 14 clicks Starting from the closed position (screwed thoroughly). But beware: if you unknown too much, the screw can end up jumping with the vibrations. My secret? Always make a small white felt mark on the top of the screw to see at a glance if it turned alone during your sleeve! "

🎓 Tuto: how to adjust your valve screw?

1. Basic setting: Screw the knob with a clockwise direction (without forceing like a beef to the end so as not to mark the plastic).

2. Adjustment: Unscrew the desired number of clicks.

   • Sinuous / slow track: Screw more (Farm Valve) to prevent it from opening too early in tight turns.

   • Fast track / long straight line: Unscrew (flexible valve) for the engine to "take turns" as soon as possible.

3. Verification of the seal: Make sure the small O-ring located under the screw is in good condition. If he is dead, the screw can loosen alone or let out the pneumatic pressure.

4. Cleaning the thread: If the screw becomes hard to turn, do not force. Disassemble it and clean the thread of the cover and the screw, because the gum dust often lodges there.