Compatibility - For FS90 FS100 FS110 FS90R FS100R FS110R Trimmers (3365) Key benefits - Reliable ignition and smooth starting - Helps prevent weak sparks and misfires - Restores clean ignition for your gardening tools and improves cutting or trimming performance - Improves combustion efficiency of the fuel air mixture - Better engine response and reduced hesitation during load changes - Easy starter performance for cold starts or restarts during operation - Reduces pulling or crank effort for a quicker, more efficient start cycle What it delivers - Function: spark plug designed for compatibility with the listed FS trimmers - Compatibility: tested for FS90, FS100, FS110 and their R versions (3365) - Performance: supports reliable starts, cleaner ignition, and improved overall engine behavior during cutting and trimming Use scenarios - Routine maintenance on FS90/FS100/FS110 series trimmers to ensure reliable starts - Cold starts on cool mornings or after storage, when starting can be more difficult - Restart during operation after a stall, minimizing downtime and effort while resuming trimming work