I have an 1986 28 hp SPL. Due to a broken stud hole, I'm replacing the front part of the crankcase. I haven't been able to find the torque specs to use for putting it back together. Also the torque specs for the intake manifold. Any help with them or a link to where I can find them, would be appreciated.
12-19-2019 10:47 - edited 12-19-2019 10:49
The crankcase halves are a matched set that are machined together. That is why they use tapered alignment pins. They are not made to be interchangeable with another crankcase half.
1/4-20 bolts - 60-84 in lbs.
5/16-18 bolts 120-144 in lbs
3/8-16 bolts - 14-26 ft. lbs.
"There is never just one thing wrong with a boat";
-- Travis McGee, main character in a book series by John D. McDonald
The factory recommends that a properly trained technician service your Johnson or Evinrude outboard motor. Should you elect to perform repairs yourself, use caution, common sense, and observe safety procedures in the vicinity of flammable liquids, around moving parts, near high-temperature components, and working with electrical or ignition systems.
The information offered here is only general in nature and should not be construed as complete factory approved procedures, techniques, or specifications. Always use the proper service manual for your motor, up-to-date service literature, the correct tools, and have an understanding of how to proceed with troubleshooting and repair methods. If you are unsure or uncomfortable with a procedure, a situation, or a technique, enlist the services of a factory trained technician.
Thank you for the info. I was unaware they were a matched set. Here is a picture of the broken piece. It's the stud that holds part of the starter bracket. I don't know anything about what can and can't be welded. Do you think there may be a fix for the break?
If you cancenter a drill bit, there is a product called a Time-Sert which would work in this case. It is a thread repair product, unlike heli-koil, it adds material to the the taped hole.