I need to change my oil and the engine doesn't have a drain plug. How do get the bad oil out?
Thank You in advance.
Thank You in advance.
Draining oil from a Yanmar Diesel
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Two possiblities: 1/ put a clear plastic tube over a piece of rigid tubing that will fit down the dipstick hole and is long enough to reach the bottom of the oil pan [on my 2GM20F it is purely a "by feel" operation] and connect to a drill or hand motivated pump. 2/ Same set up but clip off the plastic line at an evalucation cannister and pump to create a vacuum in the cannister. Release the clip and it will suck the oil out of the pan and into the cannister. Throw the used oil overboard and blame BP, or be a wimp and recycle it properly.
Best Oil Removal Tube
And yes you do need some sort of oil pump orvacuum extractor.
The largest possible rigid tube will work best. Buy some 5/16" external diameter brake line tube from an auto parts supplier. This tube will only just fit in the dip stick hole on a 3GMF. Whatever rigid tube you use, it needs to have a very slight bend or it will not find its way right down to the very bottom of the oil pan.
And yes you do need some sort of oil pump orvacuum extractor.
Everyone has their favorite oil extractor. Mine is the Pela 2000, never a drop of oil on the sole. It has been replaced with the Pela 2.5 L a larger unit. Here is a link to Amazon but you may be able to find it for a few dollars less somewhere else.
http://www.amazon.com/Pela-Oil-Extractor-2-5-liter/dp/B000221LOA
Hey, found the older Pela 2000 at Wholesale Marine $37 - don't know them -
http://www.wholesalemarine.com/c/410011/Oil+Changers.html?gclid=CL-DmJ_o_qECFRQN2god7AeFEg
http://www.amazon.com/Pela-Oil-Extractor-2-5-liter/dp/B000221LOA
Hey, found the older Pela 2000 at Wholesale Marine $37 - don't know them -
http://www.wholesalemarine.com/c/410011/Oil+Changers.html?gclid=CL-DmJ_o_qECFRQN2god7AeFEg
Transmission Fluid
I syphoned the oil out of my 2GM20F just like you did. For my transmission oil I didn't want to mix the oils so I used some old nasal oxygen tube and a 20cc syringe and sucked it out. Worked well for the transmission in a pinch because there is so little of it. Later I was talking to the people at Mack Boring and they said you can even use the engine oil in the transmission? I wouldn't try it but I guess it means you can use the same drill pump for both fluids. BTW do you know how much $$ you save by changing these fluids yourself?
I syphoned the oil out of my 2GM20F just like you did. For my transmission oil I didn't want to mix the oils so I used some old nasal oxygen tube and a 20cc syringe and sucked it out. Worked well for the transmission in a pinch because there is so little of it. Later I was talking to the people at Mack Boring and they said you can even use the engine oil in the transmission? I wouldn't try it but I guess it means you can use the same drill pump for both fluids. BTW do you know how much $$ you save by changing these fluids yourself?
I will second Paul F on using a n oil extractor. i don't use the one he links to, but I can attest they are great!
Push the extractor tube into the dipstick tube, pump the handle a few times, walk away. when you return the oil is out and in the extractor's tank.
It truly is that easy.
Push the extractor tube into the dipstick tube, pump the handle a few times, walk away. when you return the oil is out and in the extractor's tank.
It truly is that easy.
Years ago Yanmar recommended engine oil in the transmission. They have since changed to transmission fluid as the lubricant. I have two manuals for my engine/transmission from Yanmar. The later one says to use transmission fluid. I am still using engine oil as first reommended but will change to transmission fluid with the next transmission fluid change. As we all know the important thing is to have some 
- Remember to warm up the motor before changing the oil.
- Check your Yanmar manual for the correct motor oil and for the correct clutch unit (transmission) oil. Some clutch units use motor oil and some use automatic transmission fluid. Don't use the wrong oil !!!! Check with a Yanmar dealer if you are not sure.
- Check your Yanmar manual for the correct motor oil and for the correct clutch unit (transmission) oil. Some clutch units use motor oil and some use automatic transmission fluid. Don't use the wrong oil !!!! Check with a Yanmar dealer if you are not sure.
Is what I'm using now
Here is a method that is inexpensive and much less labor intensive, that I am using now. I took a small one gallon garden sprayer. About 10 or 12 bucks at any of the big box stores. Cut the nozzle off. I also removed the valve from mine. Take the end of a shop vac hose and build it up with some self vulcanizing tape to fit tightly into the neck of the sprayer. Now you just stick the nozzle end into the dip stick hole, put the shop vac pick up tube into the sprayer filler/pump hole, turn on the shopvac and go do something else for a little while. Be aware that with this method, or any listed above, you cannot get all the old oil out. Depending on the angle your engine is tilted back, you can leave as much as a quart in the pan. I am going to solve this little problem once and for all by removing the pan and installing a proper drain plug at the rear of the tank. May not be necessary, but the idea of leaving some of the old oil in there is a bother to me.
Here is a method that is inexpensive and much less labor intensive, that I am using now. I took a small one gallon garden sprayer. About 10 or 12 bucks at any of the big box stores. Cut the nozzle off. I also removed the valve from mine. Take the end of a shop vac hose and build it up with some self vulcanizing tape to fit tightly into the neck of the sprayer. Now you just stick the nozzle end into the dip stick hole, put the shop vac pick up tube into the sprayer filler/pump hole, turn on the shopvac and go do something else for a little while. Be aware that with this method, or any listed above, you cannot get all the old oil out. Depending on the angle your engine is tilted back, you can leave as much as a quart in the pan. I am going to solve this little problem once and for all by removing the pan and installing a proper drain plug at the rear of the tank. May not be necessary, but the idea of leaving some of the old oil in there is a bother to me.
Well, I guess that explains why during the two oil changes I've done so far on my 2GM20F, after I add 2 quarts of new oil (a little less than the stated capacity), the level is well over the top mark on the dipstick, and I have to suck some of it out.
--Michael
We have a 2GM20F with a KM2C transmission and the boat was delivered with transmission fluid and the dealer repeatedly stated it was the correct fluid even though we had to periodically add small amounts to maintain the recommended level. We switched to 30W motor oil and have not had to add fluid in the last five years. A transmission is the ideal place to use a sinthetic oil as they are more resistant to temperature breakdown an the oil keeps relatively clean and will last much longer between changes.
Randy, On my Yanmar I use a piece of rubber hose that fits OVER the dip stick tube, then I suck the oil out that way with my pump. FWIW, I always unscrew the oil filler cap before I suck he oil out.
Randy:
This is the best product that we have used. WM has their version too. The hoses are semi rigid plastic so they DO NOT collapse when warm oil is pumped through them.
http://cgi.ebay.com/ebaymotors/ws/e...6fe650597&rvr_id=&ua=WVF?&itemid=220603868987
You should be able to find them from many sources and I think the prices can be as low as about $50.
This is the best product that we have used. WM has their version too. The hoses are semi rigid plastic so they DO NOT collapse when warm oil is pumped through them.
http://cgi.ebay.com/ebaymotors/ws/e...6fe650597&rvr_id=&ua=WVF?&itemid=220603868987
You should be able to find them from many sources and I think the prices can be as low as about $50.
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