Have Serial Number, need help

josephkbeard · ‎12-09-2019

I have an older 150 HP (I believe, by looking at the intake manafold) Johnson. The model plate is unreadable. The serial number on the freeze plug is G3797397. Can you tell me what year this engine would be? And confirm if it is a 150HP? Thank you for your help.

BluewaterBill · ‎07-14-2011

@josephkbeard wrote:

I have an older 150 HP (I believe, by looking at the intake manafold) Johnson. The model plate is unreadable. The serial number on the freeze plug is G3797397. Can you tell me what year this engine would be? And confirm if it is a 150HP? Thank you for your help.

You may want to post some pictures of the motor cover with decals if possible, or at least views of the powerhead from both sides, top front and back or double check the serial number.

It seems that serial number G3797397 is a 1995 225hp Johnson (J225TXEO) produced on September 29, 1994.

"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.

josephkbeard · ‎12-09-2019

Thank you for your quick response. I will try to get photos of the motor, however all the decals have been removed and the hood has been painted sometime in the past. I believed it was a 150HP because of the intake manifolds. There are two, one for each bank. Each manifold has 3 carburetors. That is what I see illustrated for the 150hp motors. Would a 225hp have only two manifolds (vertical), or would it have three doubles (horizonal)?

BluewaterBill · ‎07-14-2011

A 225 would have 6 black plastic-looking single barrel carbs behind the air box and an exposed flywheel and starter motor.

A 1991 or later 150 has covers over the flywheel and it is not visible or accessable. Only the bottom half of the starter can be seen.

Older 150s have 3 2bbl carbs with an aluminum body.

"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.

feednfish · ‎11-04-2020

i have same problem 88spl with numbers on block , reads 186691 28cp then below that 321902 any help would be so grateful thanks

BluewaterBill · ‎07-14-2011

@feednfish wrote:

i have same problem 88spl with numbers on block , reads 186691 28cp then below that 321902 any help would be so grateful thanks

A serial number is 7 digits and can be found stamped on the 1" silver disc on the engine block that looks like a core plug.

"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.

feednfish · ‎11-04-2020

HI BILL this is the only number i can find on top of block between cylinders, there are no numbers on plugs

feednfish · ‎11-04-2020

this is only number i could find nothing on my silver caps on top , my 76 115 had those stamped.this is a 88spl w/tilt trim, electric start dark metalic blue with grey on top cowling only numbers i could come up with are e88tsleoc or e88 tslers 94,95?

BluewaterBill · ‎07-14-2011

@feednfish wrote:

this is only number i could find nothing on my silver caps on top , my 76 115 had those stamped.this is a 88spl w/tilt trim, electric start dark metalic blue with grey on top cowling only numbers i could come up with are e88tsleoc or e88 tslers 94,95?

e88tsleoc would be a 1995

e88 tslers would be a 1994

Almost every available maintenance part is likely the same as they did not change much over the years plus they are the same cylinder block as the popular V4 90 hp and share almost all parts with few exceptions

"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.

feednfish · ‎11-04-2020

thanks for the help bill your are rare find on this forum.

Have Serial Number, need help

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Re: Have Serial Number, need help