@Mauser308 sums it up IMO. Definitely store in the fully vertical position if possible , we were living in Arnhem Land on the coast on & off for 12 years, the local community traditional land included a island chain off the coast .They had 14 community owned Yamaha 150's & about the same 25-40's for their tinnies. Yamaha would fly in their top technicians from Oz HO & use it as a field training work shop for their Mech's after having had been caught out with bad service work under warranty before (community was cut off by road during Wet season & only small charter plane access or once a month Barge for supply) . These motors did a lot of hard yards in the humid tropics & long trips along the remote coast line ,from memory they were turned over under contract every 2 yrs or from memory l think it was 2000hrs , but a lot of that was because the heat & humidity played hell with the electrics. We ran a ex community 150 l was given by my "uncle" on my dive boat & the tech always swore by dosing up & vertical storage when in storage once the cyclone season & trade winds hit ,so l have always done the same using Saltaway.
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