Hi,

What Year is our outboard made?


If it is unknown when Your outboard was last serviced I suggest You have it serviced including a new impeller installed so You know the impeller will work some seasons without trouble for You. Does not cost much to have a new impeller installed.

It is not unusual for the tell tale house to get clogged with mud or similar so try to clean the inside of the house and see if it helps (I had it clogged with mud once on a Suzuki DT65 I had before).


Also try the forum:

Mercury Outboard & Mariner Outboard Troubles/Repair

since this is a Mariner "Trouble"