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Terrapin replied to the thread 1987 Johnson 15 HP J15RCUD Lost Spark.

Racerone, You Called It! I replaced the Power Pack and the engine fired right up! I'm happy I was in the 90% club for the above...

Thursday at 8:31 AM
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Terrapin replied to the thread 1987 Johnson 15 HP J15RCUD Lost Spark.

I performed a Stop Switch Test and checked the Ignition Coil, Charge Coil, and Sensor Coil resistance measurements. All resistance...

Thursday at 8:26 AM
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Terrapin replied to the thread 1987 Johnson 15 HP Choke Linkage Hanging Up.

Racerone, yes, since this 1987 is new to me, I successfully rebuilt the fuel pump given the diaphragm may be 38 years old.

Thursday at 7:56 AM
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Terrapin replied to the thread 1987 Johnson 15 HP Choke Linkage Hanging Up.

Will do! I ordered these from McMaster Carr.

Thursday at 7:51 AM
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Terrapin replied to the thread 1987 Johnson 15 HP Choke Linkage Hanging Up.

This is a 1987 Johnson 15 HP engine (J15RCUD). Model number confirmed on transom bracket sticker and engine block Welch Plug. This was...

Jun 28, 2025
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Terrapin replied to the thread 1987 Johnson 15 HP Choke Linkage Hanging Up.

I will attempt to explain my concern. The first image below (Choke Closing / image 1) is taken when moving the longer lever arm (moved...
Jun 28, 2025
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Terrapin posted the thread 1987 Johnson 15 HP Choke Linkage Hanging Up in Johnson & Evinrude Outboards.

This 1987 has the early carburetor on it, not the later carb with plastic top. My choke linkage occasionally hangs up in the closed...

Jun 27, 2025
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Terrapin replied to the thread Water Pump Kit P/N 394711 for 9.9 & 15 HP Johnson.

OK, thanks for the explanation. I don't have a groove around the top of my 1987 15 HP driveshaft. I just wanted to make sure I wasn't...

Jun 25, 2025
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Terrapin posted the thread Water Pump Kit P/N 394711 for 9.9 & 15 HP Johnson in Johnson & Evinrude Outboards.

This kit comes with an O-Ring (item 5) with an internal diameter of approximately 3/8". Where does this O-Ring go? I can't find it...

Jun 25, 2025
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Terrapin replied to the thread 1987 Johnson 15 HP J15RCUD Lost Spark.

OK, I will order a new powerpack. Also, once I get the Klein CL800, I will try and use it to measure peak voltages for the cranking...

Jun 24, 2025
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Terrapin replied to the thread 1987 Johnson 15 HP J15RCUD Lost Spark.

I believe the black kill wire is the "E" terminal on the 5 pin Amphenol connector. If I understand, you are suggesting the "Stop Circuit...

Jun 23, 2025
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Terrapin replied to the thread 1987 Johnson 15 HP J15RCUD Lost Spark.

I have the “CU” 9.9 thru 30 Service Manual and performed the following tests: Stop Switch Test – R and TE Models: Meter correctly shows...

Jun 23, 2025
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Terrapin posted the thread 1987 Johnson 15 HP J15RCUD Lost Spark in Johnson & Evinrude Outboards.

New to me 1987 Johnson 15 HP engine J15RCUD. I was told this engine hasn’t been run for 4 years. This engine has the newer style fuel...

Jun 22, 2025

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