How to winterize a 4 stroke outboard?
I just bought a new boat with a 4-stroke outboard and I'm new to boat maintenance. With winter coming, I need to know the correct procedure for winterizing a 4-stroke outboard engine.
5 answers
6 months ago
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For 4-stroke outboards, changing the engine oil and filter is crucial before winter because used oil contains acids that can damage internal parts. Also, remember to treat your fuel tank with stabilizer to prevent varnish buildup.
4 months ago
Our boat uses a 4-stroke and my dad always makes me help him drain the coolant. We just run fresh water through it first using earmuffs, then make sure all the water drains out completely so nothing freezes and cracks.
6 months ago
Look, don't leave old oil in a 4-stroke over the winter months. Change both the engine oil and the lower unit gear lube now. It is a simple job that will save your expensive engine from corrosion.
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6 months ago
Just like keeping blood sugar stable requires a careful routine, preserving your engine needs a systematic approach. Clean the fuel filters and add a fuel conditioner to protect the fuel injectors from gumming up over winter.
6 months ago
Be careful with general advice you find online for these complex marine engines. Refer strictly to your specific manufacturer's guide regarding fogging 4-strokes, as some models have electronic fuel injection that requires different procedures.