RC Champion RCJ7Y Spark Plug K369990032 for G620PU G800BPU - Zenoah  [K369990032]

Champion RCJ7Y plug and installation guidance

This Zenoah K369990032 Champion RCJ7Y spark plug is a compact replacement component compatible with G380PU, G450PU, G620PU and G800BPU engines. It corresponds to part number 163073110 and is intended as a direct replacement when the original plug shows signs of wear or erratic firing.

In operation the plug supplies the spark path into the combustion chamber, using a nickel alloy electrode to transfer the ignition spark. In model use its role is to sustain dependable ignition timing and to aid fine-tuning of idle and throttle response during routine engine maintenance.

Fitment steps: make sure the engine is cool, clean around the plug to keep debris out of the cylinder, remove the worn plug carefully to avoid cross-threading, inspect plugs seat and threads, verify electrode gap and condition before installing the replacement, hand-start the threads and tighten securely without over-torquing, then check ignition and idle after installation. This product is designed only for RC model engines.