Winterising small engines

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Zasso Nouka
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Winterising small engines

Post by Zasso Nouka »

Thought I'd already posted a topic on winterising small engines but can't seem to find it.

So as our kusakariki's and other small engines aren't likely to be used for a while now is a good time to winterise them, particularly 2 stroke engines but it doesn't do any harm to also do small 4 stroke engines as well. The process is the same for any small engine tool, chainsaws, pumps, etc.

So pop the engine up on a bench and take the cover off to expose your spark plug and remove it

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Spray some light oil (any of the oil sprays from your local home centre will do the job) in there while pulling the starting cord to turn the engine over. This ensures oil is spread along the entire length of the cylinder and piston. Just spray a little oil in there, we're not trying to flood the cylinder just ensure an even light coating to prevent rust over the winter.

While you've got the spark plug out inspect it for wear and damage and replace if too old or clean it up with a bit of wire wool.

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Make sure to remove any wire wool that may remain on the plug before putting it back in the engine.

While we've got the engine on the bench might as well check and clean the air filter. If it's dirty or dusty clean it, for paper filters use your compressor to blow dust off. For foam filters wash them in warm soapy water and allow to dry, then spray with the oil spray, foam filters catch small dust particles by them adhering to the oil. This filter below is damaged and will need replacing with a new one.

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For kusakariki's it's worth greasing the bearing near the cutting disc, clean out any old grease and then reapply either with a spray or squeezy tube.

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One other point, which probably most people are already aware of but just in case if not. Never put your kusakariki or other small engines away with any fuel left in the tank. The alcohol added to modern petrol attracts water which can degrade the petrol and cause gums and rust to build up in your engine damaging it always run the tank dry or tip out the remain petrol with the engine still running. Be really cautious if tipping excess fuel out of the tank with the engine running because if your engine has a faulty spark arrestor or doesn't have one at all you could get a fire, if in doubt let the tank run dry on it's own. Never use old gasoline or store it more than a few weeks unless you have a stabiliser in there.

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Winterising small engines

Post by Shizuman »

Thank you for the reminder mate!

Also tip out any priming water in engine pumps so it doesn't freeze.

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Zasso Nouka
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Winterising small engines

Post by Zasso Nouka »

Shizuman wrote:
Wed Dec 30, 2020 9:07 am
Also tip out any priming water in engine pumps so it doesn't freeze.
Good point man, I'd completely forgotten to mention that. It's also a good idea to spray some oil into the parts where water circulates to stop any rust build up over winter.