Reply To: Power Head Compression

[Seahawk]

Thanks for the clarification and explanation. This must be some sort of quality control test during the manufacturing process of the piston rings with a specialized jig. Would be interesting to hear from someone who has experience in this type of measurement and what tool was used to obtain the measurement. In the manual the lower hp models have lower values while the higher hp models have greater values. In the manual there is a 35 hp rated motor which has two different ranges for different models. Might be an engineering change since the follow year models kept the higher rating.