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Old 09 July 2013, 13:40   #1
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Evinrude ETEC 90HP Maintenance

I have a Evinrude ETEC 90HP in its first year of real use and after every use the engine gets thoroughly flushed and washed down with soapy water.

The first service is not due for 2.5 years but when it is stored (outside although whole boat will be plastic wrapped) what other maintenance should I do?

Thanks.

BTW the engine has been fantastic and compared to previous engines I have had (admittedly 30 yrs ago) I cannot believe the power to weight ratio. It looks more like a 40HP we used to have and my old 90HP Mercury was twice the size. I had toyed with a 115HP but as the RIB came with the 90HP I stayed with it and it has been fine.
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Old 09 July 2013, 13:58   #2
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Remove the prop & grease the propshaft with triple guard grease. Check the propshaft oil seal for fishing line. Remove the drain plug from the gearbox & check for water in the oil & metal particles on the magnetic drain plug. That's about it. If you want to dig deeper you can start removing the thermostat & checking the plugs, but if you're not having any problems I'd leave well alone. After you have flushed it through, remove the cowl & rinse the power head down with fresh water on a low pressure spray, I use the garden watering spray on the end of the hose. The Corroguard spray is the dogs for protecting the engine, best £10 quid you'll spend.

Enjoy it & drive it like you stole it
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Old 09 July 2013, 15:04   #3
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Enjoy it & drive it like you stole it
Or even less guilt when "like you RENTED it"

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Old 09 July 2013, 15:08   #4
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Remove the bolts that hold the gear box on one by one (including the one under the trim tab) grease them and refit. After three years they can seize and cause big headaches when a new impeller needs fitting...

Spray oil around the bottom of the engine every few months to prevent corrosion. The best way to do this is to remove the side cowlings but you may not feel happy doing this. Otherwise just get in their with the WD40.
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Old 10 July 2013, 05:31   #5
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Quote:
Originally Posted by Pikey Dave View Post
Remove the prop & grease the propshaft with triple guard grease. Check the propshaft oil seal for fishing line. Remove the drain plug from the gearbox & check for water in the oil & metal particles on the magnetic drain plug. That's about it. If you want to dig deeper you can start removing the thermostat & checking the plugs, but if you're not having any problems I'd leave well alone. After you have flushed it through, remove the cowl & rinse the power head down with fresh water on a low pressure spray, I use the garden watering spray on the end of the hose. The Corroguard spray is the dogs for protecting the engine, best £10 quid you'll spend.

Enjoy it & drive it like you stole it
Thanks for the advice - just to clarify are you saying to change the lower gearbox oil ie when you say to remove the drain plug for the gearbox and check no water in the oil?
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Old 10 July 2013, 05:35   #6
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Quote:
Originally Posted by Chris View Post
Remove the bolts that hold the gear box on one by one (including the one under the trim tab) grease them and refit. After three years they can seize and cause big headaches when a new impeller needs fitting...

Spray oil around the bottom of the engine every few months to prevent corrosion. The best way to do this is to remove the side cowlings but you may not feel happy doing this. Otherwise just get in their with the WD40.

Thanks Chris - just to be sure what you are suggesting: On the bolts I guess do one at a time in order to not completely remove the gearbox?

When you say spray oil around the bottom of the engine. Again I guess you mean the power head under the top engine cover cowl?

You mention removing the side cowlings are these the ones either side of the leg?
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Old 10 July 2013, 05:39   #7
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Hi do you know where I can purchase Corroguard in the UK and hopefully post to France?
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Old 10 July 2013, 06:05   #8
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Thanks for the advice - just to clarify are you saying to change the lower gearbox oil ie when you say to remove the drain plug for the gearbox and check no water in the oil?
No need to change the oil, just remove the lower gearbox bung just enough to allow a dribble of oil out & check the condition of the oil. If it's milky, or worse if water runs out instead of oil, then it's worth changing the oil. If it's clean, just replace the bung. If there is un-emulsified water present, I'd get the gearbox pressure tested.

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Hi do you know where I can purchase Corroguard in the UK and hopefully post to France?
You'd be better off sourcing it locally as posting aerosols can be awkward, it's a BRP part so any Evinrude dealer will carry it. If you get stuck I can post you a can out.
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Old 10 July 2013, 06:10   #9
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Great I will try my local Evinrude dealer in La Rochelle. Also thanks for the offer ref posting and supplying. regards Nigel
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Old 03 August 2013, 09:40   #10
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Have not managed to source Corroguard. If you sell it can I buy 2 x cans of it and let me know cost and postage if that is alright with you. Also the best way to pay you ie Debit card, Bank transfer or Paypal. We live near La Rochelle, Bois Plage en Re. (Fully understand if you are unable to do this easily as do not want to put you out.)

Many thanks
Nigel
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