Chrysler 20 and 30 HP Outboard Motors Service Manual OB 3435, Page 144Get this manual
ELift crankshaft from cylinder and remove the rest of the main bearing rollers and the other bearing race half from bore in cylinder9Remove crankshaft bearings as followsASlide upper main bearing from crankshaft BSlide lower main crankshaftbearing seal collar from
C Remove crankcase seal ring from middle of crankshaftFigure 31
CAUTION
Mark pistons so you know which cylinder they came from10Push connecting rod and piston assembl ies of of cylinder 11 Disassemble pistons as followsARemove piston rings from piston using piston ring expanderSpecial Tool NoT 8926Figure 32 PILLOW BLOCK
Figure 33Removing Piston Pin1Remove carbon from exhaust ports and all exhaust passagesusing cleaning solution or rotary brush Special Tool NoT 2991
Carbon build up restricts exhaust gases and greatly reduces engine performance 2Clean all dried cement off gasket surfaces with lacquer thinner