(3) Rotax Cap Ø20 DIN443

Full description: what is the purpose of this piece?

Even if it seems discreet, this small steel cup ensures key functions:

1. Total sealing: Once implemented, this cap prevents oil vapor leaks from low engine and forbids foreign body inlet (dust, sand, gum) in the internal cavities.

2. Friction maintaining: Its slightly curved shape allows for strength insertion (press-fit) which ensures that it remains in place despite the extreme vibrations of the engine at full load.

3. Thermal resistance: Made in a treated steel, it supports the high temperature rise of the housing without expanding excessively or dislodge.

4. Origin compliance: This is the exact room used by the BRP-Rotax To guarantee the integrity of your engine block Max or Dd2.

? Michel's trick

"This little cap is what is called a 'safety shutter'. If you notice that he oozes a little or he took a shot, do not leave him like that. If he jumps, it's the door open to all dirt in your lower engine! My advice: To install it correctly, uses a socket of the same diameter (Ø20) to type flat with a small mallet. If you tap in the middle with a screwdriver, you will deform it, it will flee and it will eventually fall. A fitting clean, it's the key for a motor that remains dry!"

? Tuto: installation and replacement

1. Housing cleaning: Before laying a new cap, clean the edge of the orifice perfectly with a degreaser. No trace of fat must remain on the contact area.

2. Presentation: Place the hood straight on the orifice. The curved side must be directed outward.

3. Emptyment: Using a bronze jet or a 20 mm bushing, hit gently and evenly. The cap must descend until you flush the housing or reach its abutment.

4. Verification: Once posed, check that it is blocked. He should not be able to turn on himself by hand.

✅ Specifications

• Diameter: 20 mm

• Standard: DIN 443 (shutter cup)

• Material: Zincled or treated steel

• Compatibility: Rotax 125 Max, Junior, Senior, Master, DD2

Note Magickart: Room sold individually. Indispensable when a complete renovation of housing or following a shock that damaged the original shutter.