Zenoah K369991975 Replacement Spark Plug NGK CMR6H for G230RC, G240RC, G260RC, G270RC, G290RC, G231PUM, G260PUM, G290PUM  [K369991975]

Replacement NGK CMR6H for Zenoah glow engines

This replacement spark plug fits Zenoah two-stroke RC engine models listed in the product name and uses the NGK CMR6H designation shown by the original manufacturer. It is an RC-scale ignition component intended as a direct-service part for glow engines used in model cars and similar hobby platforms.

Use this plug when restoring firing reliability after fouling or when replacing worn ignition parts during routine engine maintenance. The item is a like-for-like replacement option that preserves the original NGK CMR6H reference within Zenoah service lists.

Mounting and routine checks

Fit the plug only when the engine has cooled. Protect the ceramic insulator by using a correct socket and hand-starting the thread to avoid cross-threading. Tighten to a firm seat without overtorque, then confirm idle and running quality and adjust needle or carburetor settings as required. Inspect the electrode and insulator regularly for signs of fouling or damage.

• Compatibility: Matches the listed Zenoah engine model codes in the product name.
• Service tip: Replace when electrode wear or persistent fouling affects ignition.
• Tuning role: Maintains consistent ignition for needle-valve and timing adjustments.