00 Mercury 25 big foot 4 stroke

[brim_buster]

Here is the problem. 95 percent of the time I can hit the key and it fires right up. Day after day. Then go out and hit the key and nothing. Replaced key ignition and starter solenoid. Tilt and trim works great. Strong battery. It has left me on the river last year. Trying to get this ready for the river. Any ideas on what to trouble shoot or how. Thanx in advance for the help.

 

[Scott Danforth]

look for a loose connection

 

[brim_buster]

Well I bit the bullet for 170 bucks bought a new control box with a 8 pin harness. Problem solved