Full description: the importance of the clutch side

The clutch side seal is subject to special constraints:

1. Separation of fluids: Its role is to prevent the air / essence mixture from the motor to escape, but also to prevent the box oil (XPS) from entering the low engine.

2. Teflon Technology (PTFE): Teflon lip offers a perfect glide. Less friction Here means a higher climb and less heating in the silk level of the crankshaft.

3. Resistance to oils: The FPJ compound is specifically processed so as not to be degraded in contact with gearbox oils and competitive additives.

4. Performance EVO: This seal is the standard for motorizations Rotax Evoensuring constant pneumatic sealing for precise carburation.

💡 Michel's trick

"Attention, that one, it's the 25x38x7, do not confuse it with the ignition side that is bigger! On the clutch side, it is often where one detects an air intake: if your motor smokes white and that it feels the box oil is that this seal is dead. My advice: At the editing, be hyper meticulous. Teflon lip is rigid. If you do it, it turns around or clip, and you can throw it. Uses a small mounting ring or protects the crankshaft grooves with a bit of smooth electrician scotch for not cutting the seal. And we go up that to the place: the spring inside the housing! "

🎓 TUTO: installation and verification

1. Preparation of the crankshaft: Inspect the silk of the crankshaft. It must be perfectly smooth (polished). If it is marked, the new seal will not last long.

2. Setting up: Apply a drop of mixing oil to the inner lip. Present the seal in front of its accommodation in the crankcase.

3. Depression: Use a 38mm installation tool or a long sleeve to push the seal uniformly until it is swallowed the housing (or until it stops).

4. Oil control: Once the engine has been reassembled, if your box of box oil drops abnormally is that the sealing of this seal is compromised.

✅ Features

• Dimensions: 25 mm (interior) x 38 mm (outside) x 7 mm (thickness)

• Material: FPJ / High Performance Teflon

• Location: Right side (clutch / sandy)

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

Note Magickart: Room sold individually. For full renovation of the bottom motor, do not forget to also control the ignition side seal (28x38x7).