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Os Max GT22

Old 07-22-2021, 12:54 AM
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danijelc
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Join Date: Aug 2005
Location: Zagreb, CROATIA (HRVATSKA)
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Default Os Max GT22

Hello,

I found broken piston ring on new engine. It used only 5 liters of fuel, ratio was 1:20 with Bel Ray H1R oil. Now I have damaged ring, liner and piston. I am wondering what is the reason for this failure, it happend during taxi at low power, slightly more then idle. There is no warranty any more, engine was on shelf for some period. This is first problem with OS in last 20 years. I sow on other forums similar problems…do you have info regarding broken piston ring or similar malfunctions.
My second question : Is there any specific pocedure for carb tuning? Manual has slightly strange procedure.
How is possible to detect too lean mixture on gasser, before problems start?

Thanks

Danijel










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