Any step by step “How to winterize Scarab jet boat”

[Bohdiez]

It’s that time of year where I struggle with going to the dealer or saving some money and do it myself. Does anyone have any vids on how to do this step by step? Antifreeze or not is another debate I’ve been reading.
Any help be great fellas

Cheers

 

[Bohdiez]

Guess nobody likes to dabble in this topic. Lol

 

[nolessthen8]

It’s that time of year where I struggle with going to the dealer or saving some money and do it myself. Does anyone have any vids on how to do this step by step? Antifreeze or not is another debate I’ve been reading.
Any help be great fellas

Cheers

What I've read and heard from my dealer is that the exhaust is self draining and should not require any antifreeze pumped into it. Most dealers do that as a precaution. The engines are not fogged because blocks and cylinder heads are aluminum.

 

[kcumjc]

I'm over in Cleveland, Ohio and store my boat outside under a pole barn, but the outsides are open.

My winterization process is quite simple. Inspection, then I run a gallon of the pink antifreeze through each engine's exhaust (2 gallons in total). When I blow out the exhausts there is quite a bit of water that comes out, before the pink comes out. I have the wife give a few shots of throttle while I'm pouring through the flush ports. It's very simple and quite easy with a second person. I will also test the green anti-freeze and make sure it is still good.

Besides cleaning it up, that's all I do. In the spring, I'll run it to op temp, then change the oil & filter. Then, I'll clean and reoil the air filters. Easy peasy on these scarabs.

 

[MarkJanocha]

What I've read and heard from my dealer is that the exhaust is self draining and should not require any antifreeze pumped into it. Most dealers do that as a precaution. The engines are not fogged because blocks and cylinder heads are aluminum.

I don't understand this statement at all. If "blocks and cylinder heads are aluminum" are they not more likely subjected to scoring upon startup after prolonged storage? Also, a marine dealer said that fogging the engine will damage emission sensors. So what's the deal here? I risk serious damage to the engines in order to save the sensors? I've spent decades winterizing other gas engines and fogging them under the assumption that piston rings can do severe damage after 6 months of sitting, especially if there's no fogging oil to coat the cylinder walls. I can't seem to get a straight answer with any logical reasoning behind it.

 

[nolessthen8]

I don't understand this statement at all. If "blocks and cylinder heads are aluminum" are they not more likely subjected to scoring upon startup after prolonged storage? Also, a marine dealer said that fogging the engine will damage emission sensors. So what's the deal here? I risk serious damage to the engines in order to save the sensors? I've spent decades winterizing other gas engines and fogging them under the assumption that piston rings can do severe damage after 6 months of sitting, especially if there's no fogging oil to coat the cylinder walls. I can't seem to get a straight answer with any logical reasoning behind it.

The reason you got an engine is to prevent surface rust which does cause scoring upon start up. The "fog" is basically just oil. So because the aluminum blocks won't rust, no need for oil.

Also the dealers just charge for exhaust winterizing and its not needed. I have yet to do it over 4 years in Jersey winters