300 hours - clean combustion chamber, clean and lap valve seat surface

   / 300 hours - clean combustion chamber, clean and lap valve seat surface
  • Thread Starter
#21  
Agreed.

The only issue I've ever had with this engine is the same it's had since new, it nearly ALWAYS backfires after shutdown. No matter what games you play with throttling back and waiting first, it will always backfire on shutdown, unless almost dead-cold. Idle and max RPM's were right on the money last time I checked, probably at 600 hours, made no difference.
 

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