2006 Johnson SD 3.5 HP 2 Stroke Outboard Service Manual, PN 5006562, Page 105Get this manual
GEARCASE WATER PUMP
WATER PUMP
Disassembly
Remove gearcase from exhaust housing as described in REMOVAL AND INSTALLATION on p.103Remove driveshaft tube and coupler
Remove the impeller housing and impeller by sliding them up and off the driveshaft001289