Fuel tank cap set for STIHL petrol chainsaws of the MS640, MS650 and MS660 series (--BIEMMEDUE

Is your large-displacement STIHL chainsaw experiencing fuel cap problems, such as leaks, loosening, or loss? A damaged cap can lead to fuel evaporation and oil loss, resulting in wasted fuel and safety hazards. This high-quality fuel cap kit is specifically designed for large chainsaws like the STIHL MS640, MS650, and MS660 and effectively restores the tank's seal. Why should you replace your fuel cap? Aging seal: Over time, the rubber seal inside the cap can harden, shrink, or crack, causing leaks. Worn clips: Frequent opening and closing can wear down the clips, making them difficult to tighten or causing them to loosen and fall off easily. Blocked vent valve: A blocked vent valve can create a vacuum in the tank, affecting fuel delivery and oil pump flow. Faded color: Prolonged exposure to sunlight can discolor the cap, making it difficult to distinguish between the fuel and oil caps and increasing the risk of refueling errors. Accidental loss: The fuel cap can be accidentally lost during fieldwork or transport. Key features: Color-coded indicators to prevent misfueling: Fuel cap: Light/Beige/White, corresponding to the fuel tank location, indicates to the user that premixed fuel is required. Oil cap: Dark/Black, corresponding to the oil tank location, indicates to the user that chain oil is required. This color coding allows for quick and accurate identification, even during operation, and prevents engine damage from incorrect fluids. Oil-resistant seal: The fluororubber or nitrile rubber seal offers excellent resistance to fuel and oil. It does not expand or contract, even after prolonged immersion, ensuring an optimal seal. Reinforced fastening system: The thread on the edge of the cap is reinforced, ensuring a tight fit on the tank opening, smooth rotation, and a secure hold after tightening. Safety clip (on some versions): Certain models are equipped with a safety clip that allows the cap to be secured near the tank opening, preventing accidental loss in the field. Specifications: Item name: Fuel cap set (fuel cap + oil cap) Compatible models: STIHL 064, STIHL 066, STIHL MS640, STIHL MS650, STIHL MS660, STIHL 084, STIHL MS880 (Partially compatible, please check interface) STIHL MS461 (Partially compatible)