A while back someone told me an external fuel tank adapter kit is/was available for Nissan-Tohatsu 2.5HP. Seems that it may be possible to do the same for a 3.5HP, based on external tank parts for 2.5HP. <br /><br />Apparently the convert procedure is in Tohatsu manual for a 2.5HP - block is same as 3.5. I'm told that a specific Tohatsu flow restrictor is needed and that an in-line fuel filter should be installed. Mention was made of using an OMC diaphragm pump (size of silver dollar) that uses crankcase pulse vacuum. Unless there's a removable plug, I guess drill & tap for installing a crankcase fitting would be needed. The internal tank can either be removed or maybe have a 3-way valve to switch between internal & external tank.<br /><br />Any comments and/or specifics on this possible conversion would be appreciated.
