STIHL products generally feature a 2-year limited warranty for residential use, covering defects in materials and workmanship, with shorter 3-month or 6-month terms for commercial or rental applications. Gasoline-powered tools can often double their warranty period by purchasing STIHL oil or premix fuel. Specific product coverage, such as 10-year, 5-year, or 3-month warranties, varies by tool type and usage, particularly for lawnmowers. 

Key STIHL Warranty Details:

• Residential/Consumer Use: Most handheld tools (chainsaws, trimmers, blowers) have a 2-year warranty.
• Commercial/Rental Use: Generally 3 months to 1 year depending on the product.
• Double Warranty Option: Buying a 6-pack of STIHL HP Ultra Oil or at least one gallon of STIHL MotoMix® at the time of purchase can double the limited warranty on select gasoline-powered products.
• Battery Products: Generally 2 years, excluding specialized, top-handle, or high-end models, which may vary.
• Lawnmowers (RM Series): Ranging from 3 years (household) to 1 year (commercial) or 10 years on specific polymer bodies.
• What is Covered: Manufacturer defects in materials or workmanship.
• What is Not Covered: Misuse (e.g., using fuel with >10% ethanol, wrong fuel mixture), improper maintenance, or normal wear and tear.