I am replacing a head gasket on a 1.9 L SOHC and when you take the timing chain cover off it calls for the use of a oil seal replacement tool SA9104E - can’t find one - do you need it.
Many manufacturers call for special tools…Sometimes they’re needed…MOST of time they aren’t. When I replaced the seals on my Pathfinder…the Nissan manual called for a special tool to remove the seals…I used a screwdriver and a awl.