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Old 20 June 2018, 16:45   #1
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Evinrude bolts use which thread pattern?

During an impellor change I snapped 5 of 6 gearcase bolts I now need to replace them

luckily for me one was missing so I have a good bolt hole to test various sizes and pitches

I know which bolt it is I need, Evinrude 0341206

But I am looking at 50+ for 6 bolts

a step for a hint would be good.

its a mid 90's 15hp 2stroke
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Old 20 June 2018, 16:54   #2
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If they are course thread they will likely be unc if they are fine then unf
Consult a thread chart for the core diameter of your bolt hole to determine between 5/16" 3/8"or possibly 1/2"
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Old 20 June 2018, 17:08   #3
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They are stainless fine. 3/8 so probably a 5/16 bolt size
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Old 20 June 2018, 17:20   #4
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I assume it’s the bolts that have a 3/8 head if That’s W the ones you mean are 1/4 whitworth. If your coming to DUNDEE soon go to the non ferrous waste recycling centre at the West dock gate. I just weighed in 3 ton of alloy pics. (All outboards) there are atleast 3x 9.9/15 up in the heap. Try find a long shaft they have 6 bolts like what you need! There would have been more but Beamishken was over last night and took 5 engines.
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Old 21 June 2018, 03:22   #5
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wow Davie. next time call me too! Its a big ask to go for 6 bolts. If I knew there was a similar hood or exact engine to rob parts I would make the trip.


its the same as this one



cheers for the info guys
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Old 21 June 2018, 05:46   #6
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Pm your address and I will post you out 6 bolts.
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