1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 137Get this manual
Tools for Powerhead Repair Part No91-52344 91-24161 91-73687A1 91-90455 91-24697 91-74607A1 91-77109A1 91-812549 Tool Description Flywheel Holder Protector Cap Flywheel Puller Lifting Eye Piston Ring Expander Piston Pin Tool Locking Installation Tool Powerhead Stand
Powerhead Component Removal
1Remove Front Cowl Bracket before removing air box cover, by removing bolts, cable retainer, and fuel connectorBushings normally remain in bracketsCowl and bracket sealsbushings stay attached to respective locationsIf seal replacement is necessary, remove old seals at time of replacement
SEALANTSLOCTITESR NEEDED Loctite 271 (Obtain Locally) Master Gasket Sealant Kit QuicksilverR No92-12564 (Loctite Kit) QuicksilverR Perfect Seal No4 (92-34227-1)