Mikatesi FS91/FS91R Air Filter Tune Up Kit for Stihl Trimmers – OEM 4180-141-0300 & 4180-007-1005

Refresh your Stihl trimmer with the Mikatesi FS91 FS91R Air Filter Tune Up Kit, crafted to support smooth operation and reliable starts. This kit brings together essential parts for a straightforward maintenance routine, helping you stay productive between jobs without sacrificing performance.

The package references the OEM air filter and valve clearance components, making it a practical choice for quick refreshes on a range of STIHL engines commonly found in handheld trimmers. The design emphasizes a straightforward fit and simple installation, so you can refresh critical parts without scouring for replacements.

Compatibility and included parts

• Air Filter replace number: 4180 141 0300
• Valve Clearance Setting Kit replace number: 4180 007 1005

• Air Filter fits STIHL KM91R KM111R KM131 KM131R BT131 HT102 HT103 HT132 HT133
• Air Filter fits STIHL FS89 FS89R FS91 FS91R FS111 FS111R FS111RX FS131 FS131R FS311 FR131T FC91 FC96 FC111

Quality you can rely on is built into every order. The kit undergoes 100% inspection before shipment, and our support team is ready to assist during the trial period if you have questions or need guidance.

• 3 x Air Filter
• 2 x Fuel Filter
• 1 x Spark Plug
• 1 x Clearance Setting Kit

In real-world use, a fresh air filter can contribute to easier starts and steadier idle, while new fuel filtration helps keep fuel delivery clean during longer cutting sessions. The included spark plug supports reliable ignition, and the valve clearance kit offers a practical option for fine-tuning performance as needed.

To get the most from this kit, follow your trimmer’s service guide when replacing parts and consult our support team if you are unsure about model compatibility or installation steps. The Mikatesi kit is designed to be a practical, helpful maintenance aid that supports routine upkeep, rather than a guaranteed outcome.

How to use

1. Power off the trimmer, let it cool, and disconnect the spark plug.
2. Open the air intake housing and replace the air filter with Mikatesi part 4180 141 0300.
3. Replace old fuel filters with the kit’s fuel filters; replace the spark plug if needed.
4. Use the valve clearance setting kit to check and adjust the valve clearance per your model’s service guide.
5. Reassemble, refuel, and test start in a safe area before resuming work.

Summary

With this Mikatesi kit, you gain a practical, all-in-one maintenance solution that supports compatibility across common STIHL models and offers a straightforward replacement path for essential parts.