Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 151Get this manual
Powerhead Disassembly 1Remove flywheel and electrical componentsRefer to Section Part A2Remove timing beltRefer to Section Part A3Remove the drive gear components
5Remove crankcase cover bolts from locations shown
aBolts (10)
6Insert screwdriver at the pry points between the crankcase cover and block to separatec a