PERFECT FIT AND COMPATIBILITY: This carburetor is specially designed for Stihl FS235, FS235R and FR235 models, so it is highly compatible. Optimization of fuel efficiency : With advanced fuel mixing technology, this carburetor is able to precisely control the mixing ratio of fuel and air to optimize fuel combustion efficiency. < /p> Improved machine performance: The power, starting speed and cutting efficiency of the Stihl FS235, FS235R and FR235 lawn mowers and brush cutters are significantly improved when equipped with this carburetor. p> EASY INSTALLATION AND MAINTENANCE: The carburetor has been designed for user convenience and the installation process is relatively simple. Likewise, its maintenance is relatively easy, since it only requires cleaning and regular inspection of the main components for it to function properly. This saves users time and energy, allowing them to start using the machine more quickly and with fewer maintenance issues down the road. DURABILITY AND