Re: Johnson 70hk -88
Remove the bolts holding the lower unit to the powerhead. 4 on top on the plate above the prop and then the one on the "Fin" on the bottom of the lower unit and then with a deep socket, there is another one up inside where you removed the Fin.(6 bolts, altogether) The lower unit should drop a little(1/2"). If so, remove the shift rod linkage and remove the lower unit. Hopefully the LU is not stuck on by the driveshaft splines and will come right off. The impeller sits in a housing right on top of the lower unit. Can't miss it! This is a start, anyway.. If I missed anything, others will correct me.