Honda Outboard Oil Change

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CAVU

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CAVU
Has anyone used one of those manual vacuum pump things to suck the oil out through the dipstick hole? Would this be practical on a Honda 40HP? My owners manual calls for an oil change every 100 hours. I usually put about 200 hours in a season. It would be handy while on my long summer fishing trip to change the oil with one of those machines. Any thoughts?
 
Ken, I'm sure it'd work but if you keep your boat on a trailer or haul/move it a few times during the season, it's easier to do in the normal way. I'd think that some of the bad stuff would remain behind with the tube method. Just IMHO...

Charlie
 
After changing the oil several times in my twin 40s, I bought one from Boaters World. The drain located in the back of the engines is very temperamental (or is it me?) and easy to spill the oil. Makes for a messy cleanup after. The pump works good for me. Just make sure of how much line you have in the engine, otherwise it will curl up and not get all of the oil. Once I get the pump primed, I let it siphon out- works great.
edit-- well, ok, the pump/tank creates a vacuum and pulls the oil out.
 
Thanks Roger,
I know what you mean about the mess. I have tried every method I could think of to drain the oil and still have to have a stack of newspapers to catch the mess. My thinking was that it would be easy to take along on a trip to do an oil change at the 100 hour point. Last year at Ucluelet I spent 4 weeks there and put over 100 hours on the engines. Which model did you get?
 
I bought the Big Boy

It holds 2.5 gals- plenty large enough for both engines.
 
Changing the oil on my Honda 90 was a messy job until I made a funnel out of an empty water botttle to direct the oil as it bursts from the drain hole. Tilting the engine into the raised position before removing the filter eliminates oil escaping from under the filter gasket. This method works great with my boat on the trailer and all the supporting tools and cleaning products at hand.
Mike 'Levity'
 
I just did the same thing on my 90 with a empty coke bottle. just cut one end off and no more mess. i tilted the engine up for the filter but still got a little mess. i did have a stack of paper towels under the filter to catch it all.
 
Based on the position of the oil filter on our carburated 2004 honda 90s, it looks like I could do a filter change while the oil is full. It seems like the sump is lower than the filter but but I don't know the shape of those internals. Does anyone know the answer to this. I just did an oil change but I have a couple of filters as well but forgot my wrench and couldn't change them with the oil. It says I don't need new filters at this interval but I would like to have them.

I don't mind having to top up the oil a bit if I loose some. I could also vacuum pump some out as well.

Anyone tried it? With the motors level of course.
 
I was hesitant about changing oil via the dip stick tube, but after cleaning up mess after mess, purchased the Tempo oil extractor. No more mess and I change all of my boats oil while on the lift or at the dock without worry of a slick. I do tilt the engines when removing the oil filter to keep from making a mess at the bottom of cowling. Changing my riding mower's oil is no longer a hassel either...
PS, the dealer uses the same type of system on my car that has a 10K oil change interval with no worries about getting all the old oil out, as they must stand behind the factory warranty.
 
Greg, I've never changed the filters on my 96 carburated honda 40s without doing the oil at the same time but it looks like it would be perfectly ok to do so without having any oil leakage seems like it would be very low risk to try .
 
I just changed the oil on my Honda 150 in my slip yesterday, since the boat is hardly ever out of the water. I used the West Marine 6.9 liter oil extractor and it worked great. There was a little mess changing the oil filter but was easily handled with a few old rags.

By the way, I think West Marine has the oil extractor on sale this weekend for $59.99.

Thanks, Dick
 
The extractors are great and that's what I use already but I'm still wondering what will happen if I remove the oil filter without draining the oil while the engine is level.
 
Aurelia":1qvvzrzp said:
The extractors are great and that's what I use already but I'm still wondering what will happen if I remove the oil filter without draining the oil while the engine is level.
Click to expand...

I'd cut a coffee can open and the right shape. Slip it under the filter (if there's room and back the filter off a little. I'm betting that you will not spill much, if any. But then it's your oil spill, not mine.. :shock: :roll:

Let us know if it works and how much the fine was if it didn't. :cry:

Charlie

Oh, and do it at night... :mrgreen:
 
I have a Yamaha OB and se plastic sandwich or freezer bag over the filter and oil drip pan from auto parts store. Also have pump in a 5 gallon bucket and plastic tubing that works fine
 
I like the ziplock bag idea and I will just go for it in the next few days and keep a pile of rags and towels at the ready. I will post the results here.

Greg
 
Did it today and used a quart ziplock bag tucked under the filter to catch any leakage. The motors were tilted up initially and I did the first one after is was back down for about 30 minutes. About 1/4 cup came out and the bag caught it with no problem. I let the other one settle for another hour and it dripped just a couple of drops. So yes, you can change the filters on one of these motors whether the oil is in or out.

Changed the plugs as well and ready for our trip next month.

Greg
 
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