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

Zenoah K369991975 replacement spark plug

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.

Fitting and tuning guidance

Install with the engine cooled, using the correct spark plug socket to avoid damaging the ceramic insulator. Hand-start the thread to prevent cross-threading, then snug with a wrench; avoid excessive torque. After installation, verify idle stability and adjust carburetion or needle settings as required for your model and fuel setup. Regular inspection of the electrode and insulator is recommended to identify fouling, overheating, or mechanical 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.