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I was the winning bidder for the 70 off ebay..$3400. Have it mounted and running after having to pull the vapor separator assembly due to no high pressure fuel. It seems the engines are run and drained of engine oil but not fuel...after sitting 10 years in a cradle the pump had stuck. I soaked it in a mixture of acetone and brake cleaner overnight and it broke loose. Now it runs but I am getting a code 31 which has something to due with the CTP switch. I dont have control cables connected yet and am running it using the lever with the cowling off. It idles down to a very low speed. Could the code 31 be from not having the cables connected or do I have another problem in the throttle body? I purchased the engine without warranty even though it is new. thanks

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I don't know the codes. Hopefully someone else here can tell you or contact a Evinrude dealer and ask them.

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I'm not sure if this will help you or not, but this the error codes for System Check:
12 See Dealer - code 12
13 Throttle cable adjustment at idle - code 13
14 Throttle cable adjustment at WOT - code 14
15 EMM problem - See dealer - code 15
16 Crank sensor problem - See dealer - code 16
17 Low injector voltage - code 17
18 High injector voltage - code 18
22 Engine overheat - See owner’s manual - code 22
23 See Dealer – code 23
24 See Dealer - code 24
25 ECU/EMM overheat - code 25
26 Low battery voltage
27 High battery voltage
28 Shift assist problem – See dealer code 28
29 Engine shutdown – ECU temp – See dealer – code 29
31 Engine shutdown - Eng temp – See dealer – code 31
34 Oil system problem - See dealer immediately - code 34
35 Oil pressure loss - See dealer immediately - code 35
37 Water in fuel - See owners manual - code 37
38 No oil feedback – See dealer – code 38
39 Oil prime failure – See dealer – code 39
45 See Dealer - code 45
46 See Dealer - code 46
48 Low air temp - code 48
49 High air temp - code 49
51 #1 Fuel injector problem - See dealer - code 51
52 #2 Fuel injector problem - See dealer - code 52
53 #3 Fuel injector problem - See dealer - code 53
54 #4 Fuel injector problem - See dealer - code 54
55 #5 Fuel injector problem - See dealer - code 55
56 #6 Fuel injector problem - See dealer - code 56
57 Engine Malfunction - Do not restart engine – Seek
assistance to return to port – code 57
81 #1 Ignition coil problem - See dealer - code 81
82 #2 Ignition coil problem - See dealer - code 82
83 #3 Ignition coil problem - See dealer - code 83
84 #4 Ignition coil problem - See dealer - code 84
85 #5 Ignition coil problem - See dealer - code 85
86 #6 Ignition coil problem - See dealer - code 86
Other SystemCheck messages
Low oil level – Add oil to the oil tank
Page

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Any update, did you get it running?

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The engine is running great now..code 31 is engine overheat and was set because the impeller had gotten rigamortis from sitting for 10 years. Another factor was not enough water going into the muffs in my shop. I removed the small intake screen from the bottom side of the cavitation plate and found a 1/2" hole that leads to the water pump. I installed a cut off section of washing machine hose into this hole and supplied the engine with water thru the muffs and this hose. Now with a new impeller and lots of water supply, it really pees a stream and no code or lights. Installing the new impeller was alittle scary having never done this and the fact it is a new engine but it turned out to be simple.