
Small diameter shafts in planing hulls is one of the reasons ZF's two-speed boxes have not been as popular in Australia as in Europe and the US, because most owners here don't want to upgrade the shafts to handle the additional torque when the gearbox is in "low" gear.
For more information on the Yanmar 6LPA-STP, contact Michael Blair at Power Equipment, tel (03) 9764 0711 or email power.equipment@yanmar.com.au.