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I have a 25 hp Johnson outboard 89 on a 14' pontoon. Runs good at low speeds and at full throttle but in between it there is quite a bit of side to side vibration. I do not have a history with this outboard. I got it to replace a smaller outboard. Visually the prop looks good does not seem...

I have an 89 25 hp Johnson with electric start. The spring under the starter motor spring is broken into two pieces. The starter still works ok but I figure I should change it. My question is what is the procedure to get the nut off that holds the spring on. I am thinking can just jam...

I recently purchased an 89 Johnson tracker set up for remote controls. Model TJ25ElCEB The ignition key wiring harness has an alarm on it (see picture) My question is does this model outboard use the alarm for anything and if not can I just disconnect it?

I have a small pontoon with a late 80's 9.9 mariner out board. It is a bit on the under powered side from what I would like at least with more than two people in the boat. I can find a couple of 25 hp Mercury outboards 25 hp with electric start but they have a tiller instead of being set up...

I would like to find a carburetor gasket kit for my Mercury 4.5 horse outboard. None of those I see on the Iboats.com site are a match Outboard serial number is 4601604 The carburetor top part is stamped Mercarb 1399-1135 and the lower part Mercarb 1399-5808 If this is not enough information...

I have a Mercury Mariner 9.9 outboard from the mid 90's The Prop nut is a brass nylock nut. What is the torque specification for this nut?