Disclaimer: Always verify your engine’s specific Model/Type numbers before performing maintenance. This write-up provides general guidance; refer to the official manual for your exact engine variant.
It also provides the definitive maintenance schedule:
This is caused by carbon build-up on the spark plug or a throttle butterfly that isn't closing fully. The manual suggests: "Run the engine at idle for 30 seconds before stopping. Do not chop the throttle from high speed to stop."
Disclaimer: Always verify your engine’s specific Model/Type numbers before performing maintenance. This write-up provides general guidance; refer to the official manual for your exact engine variant.
It also provides the definitive maintenance schedule:
This is caused by carbon build-up on the spark plug or a throttle butterfly that isn't closing fully. The manual suggests: "Run the engine at idle for 30 seconds before stopping. Do not chop the throttle from high speed to stop."