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I have a 1976 Johnson 115 hp outboard. I have no spark at all…

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I have a 1976 Johnson...
I have a 1976 Johnson 115 hp outboard. I have no spark at all but the motor cranks. It supposedly has a new(used )powerpack on it. I have been told it is a bad pack but I would like to know for sure before I drop a cnote on a new pack.
Submitted: 8 years ago.Category: Boat
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Answered in 12 minutes by:
7/21/2010
Marine Mechanic: Jeff G., Marine Mechanic replied 8 years ago
Jeff G.
Jeff G., Marine Mechanic
Category: Boat
Satisfied Customers: 4,729
Experience: 42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
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Welcome,
I will be happy to assist you. If you have a question or need clarification please post back at any time.
Do you have a peak reading voltmeter?
Disconnect the black/yellow wire from the pack, check for spark. if you now have spark the stop circuit has a problem. Key switch or wiring harness.
Using an OHM meter check the stator resistance between the brown and brown/yellow 450-600 ohms disconnected from the powerpack.
Peak volts should be about 150+
Check the voltage from the powerpack to each coil, again about 150+ volts.
post back your results.
Jeff G.
Jeff G., Marine Mechanic
Category: Boat
Satisfied Customers: 4,729
Experience: 42 years experience, Certified Master Technician, All Major Outboards, Sterndrives, Hi-Performance
Verified
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