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Hi, I have a 2017 Yamaha Ex Sport with the Tr-1 engine. I am planing to do a oil change on it soon and have some questions. I have seen on the internet that by some that not all the oil should be filled in the dip stick hole. Some people suggest pouring ½ in the valve cover and ½ in the dip stick hole. Will it not all fit in the crankcase? I am planing on purchasing a service manual and reading up on that. Another question. When I check the oil level should I screw in the dipstick or push it in without screwing it in all the way.
 

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The engines them selves do not hold the oil. It is a dry sump system. To check the oil level, the engine must be at operating temp and the dipstick fully seated. proper oil level is in the middle at operating temp.
 

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So I think the dipstick hole is the oil fill. It is the type that screws in. Are you familiar with this engine? I’m not sure if I should add all of the oil into the dipstick hole (one the crankcase) or half in the valve cover (there is a black cap on the top) and half in the dipstick hole. Shouldn’t it all fit into the dipstick hole?
 

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The reason they are adding some oil to the engine is to prevent a dry start on initial start up I guess, but I don't see a need for it. You will not get all the oil out of the system. Some will remain in the engine as you are only pumping oil from the tank. The dipstick is in the oil tank, and that holds the necessary oil volume. The engine does not have a oil pan like a car does to hold all the oil. The excess in the engine will get pumped back into the tank. Note that to much oil in the engine can cause seals to get blown out, oil in the intake system, or in extreme cases, hyrolock.
Look at page 47 of the owners manual.
http://cdn.yamaha-motor.eu/owner-manuals/Waverunners/PF3YF819970E.PDF

Here's another video. Only thing I would do different is not fill it full until it is at operating temp (as the manual states). Bring it to about half way.

I would run the engine for a couple of minutes before the oil change to get as much oil in the tank as poss.
 

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Thanks, I thought that sounded Odd to have to pour the oil in two different places. One more question. I haven’t found a clear answer on if while checking the oil I have to screw in the dipstick All the way before reading the level or just push it in before the threads?
 

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Hi, I have a 2017 Yamaha Ex Sport with the Tr-1 engine. I am planing to do a oil change on it soon and have some questions. I have seen on the internet that by some that not all the oil should be filled in the dip stick hole. Some people suggest pouring ½ in the valve cover and ½ in the dip stick hole. Will it not all fit in the crankcase? I am planing on purchasing a service manual and reading up on that. Another question. When I check the oil level should I screw in the dipstick or push it in without screwing it in all the way.
I would add it to both areas. The second time I changed the oil on my EX I got allot of it out and I replaced it with the same amount that came out. When I was filling it through the dipstick hole it overflowed. I turned the motor over with the starter without firing it up and that allowed me to add the rest. I would think that adding half through the valve cover would solve that problem. Add half through the dipstick hole and then the rest through the valve cover. I'm sure Yamaha spent the money to put the valve cover oil fill in for a reason. I will try that when I change it in June. FYI, the first time I changed the oil I had a oil extractor that did not work well for this application so I did not get as much out and I did not have the overflow problem when I refilled it. I then got a West Marine manual oil changer which was much easier to work with and I also used the hose connected to the bottom of the motor to get more oil out. Let us know what works for you. If you think the TR1 is a pain with oil changes, the MR1 in my FX140 is worse. In the FX140 the filter is near the bottom of the motor and you can not get nearly as much oil out of it when you do a oil change.
 
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