F6TC Spark Plug For Small 4‑Stroke Gasoline Engine

F6TC spark plug is common ignition part for small 4‑stroke gasoline engines. Copper‑core electrode delivers good conductivity. Heat range 6 is hot‑type design for frequent start‑stop and intermittent‑use equipment. Thread specification M14×1.25 with 19mm reach, gasket‑seat construction fits many small gasoline engines. Worn or carbon‑fouled spark plug causes hard starting, rough idle, weak power and higher fuel consumption. Inspect gap regularly; replace plug when heavily fouled or electrode eroded. Widely used on generators, water pumps, tillers and pressure washers for intermittent light‑medium duty. Check and adjust electrode gap before installation. Hand‑thread first then torque properly with socket wrench, do not over‑tighten to avoid ceramic or thread damage. Though dimension matches F7TC, heat range differs, long‑term cross‑use is not recommended. Confirm engine‑required spark plug type before ordering.