1986 Johnson Evinrude 15hp / 9.9hp Thermostat Replacement

How to fit a thermostat to a mid to late 80s model Johnson Evinrude 9.9/15hp Outboard motor.
Impeller / water pump kit amzn.to/3SaeuiK (Amazon)
Thermostat amzn.to/3tMJKu0 (Amazon)

[@anthonybartomeo9027]

Thank you for showing us how you actually did this!

[@marksmith9295]

Those thermostats are expensive but at least changing out is much easier compared to the older 9.9/15 OMCs where the thermostat were on the bottom. Those required removing 7 bolts and the hood latch. An 87 9.9 I am fixing needs the thermostat replaced because it was shattered by an impeller key I found lodged inside it. Thanks for sharing and cheers from Canada:)

[@MrBambinomino]

Hi Glenno, thank you for this video it's very helpful. I have what looks like the exact same engine (recently bought second hand) and have just taken the thermostat cover off, unfortunately like yours it was completely empty. I have managed to find the part number for the assembly and spring, but I'll be damned if I can find a spring available that ships to Europe. Do you know how exact they have to be if I just purchase a spring of a similar rough diameter and length? Or do you happen to have one laying around you could measure for me by any chance? I know it's not ideal, but I'm really don't want to be paying $40 + $40 shipping for a tiny little spring :'( Many thanks

[@glennosgarage]

@MrBambinomino No sorry I can't be much help. I dont own this engine anymore. Many people do run them with no thermostat. The water will be continuously pumping, so really, the engine will run cooler. It's not that big of an issue to run with no thermostat, in my opinion. I like to, as that's how the engine was designed to operate.

[@matthewreyell2787]

I have a 1978 seahorse johson and it wont pump water could it be thermostat

[@glennosgarage]

Could be, but the impeller needs to be in good condition. If the impeller / water pump is old or you don't know how old it is, it's best to change it. See my other video on that.

[@glennosgarage]

kzbin.info/www/bejne/h6baYpadns5gfM0

[@BradleyWall-f6r]

Where can I find the same end cup and spring I was able to order thermostat but can't find plastic cup and relief spring

[@glennosgarage]

Both parts are still available at marineengine.com

[@BradleyWall-f6r]

Any chance you still have the part numbers it won't let me search by name of parts

[@BradleyWall-f6r]

When I type my model number in it can't find model

[@BradleyWall-f6r]

J15BACCS

[@glennosgarage]

No sorry mate. Try searching by year, hp, model. Or try Crowley marine website.