How to change lower unit fluid/oil, gearcase oil on outboard

[@erdalunal632]

Hey what is the second screw on the top to the left of top gear oil screw for?

[@MoPotheGreat]

When and why would you use this as opposed to 90 weight gear lube with a pump?

[@StuWNZ]

Glad to see you wearing gloves after seeing a bunch of people with their fingers in petrol and lord knows what!

[@evenseb7574]

Great video! Two questions: 1) I have a 4Hp Tohatsu that stops after a couple of minutes drive. The propeller is not spinning freely and easy like the one in the video, mine has some resistance. Could it be because of the old gear lube? It has not been changed in my time (5 years, maybe it's 8-10 years old). 2) Do I need a pump to get the new oil in, or is it just as ok with the tube he used first in the video?

[@ivarvikigs420milz3]

Yes I would buy gear oil and the pump for it

[@evenseb7574]

I changed the gear oil. Same trouble, it stopped after a minute all the time. I then took the carburator apart, and found a tiny piece of plastic (probably from a rope) inside a nozzle. I picked that out and assembeled the carburator again, and now the motor goes like a dream :)

[@MrSwampdonkey001]

Is there a reason as to why you fill from the bottom and not the top ?

[@houston33344]

Ryan Pearce to make sure all air is pushed out the top. If you fill from top air pockets can form

[@MrSwampdonkey001]

@@houston33344 thanks for the reply but I kinda found that out 2 years ago

[@houston33344]

Ryan Pearce I was not replying for your benefit but for others reading comments. Thanks for pointing out your comment was 2 yrs old, it added a lot of value to the conversation.

[@henryross8148]

Was that lower unit grease if not how do you put new grease in the lower unit

[@thomasmergner4286]

Why fill form the drain hole? Just curious

[@sadsausage2224]

I leaves no air inside

[@outdoorlife6577]

Thanks for sharing I'm trying to be more handy and learn how to do some of these things to save money. I change the top oil. Watching your video now I have enough confidence to change the bottom I bought Quicksilver SAE 90 for my 25hp 4 stroke mercury. Is there a big difference between the squirt bottle and the pump type?

[@MoPotheGreat]

I was wondering the same thing

[@CuriousSoulCanada]

my Mercury/Force engine has three plugs: VENT, FILL, DRAIN. I am removing the VENT first, then the DRAIN, get the old oil out, install the DRAIN plug back, then use the FILL hole to refill the gearcase, then install the FILL plug back once some fluid that comes out indicates that we have filled the assembly with oil, and the last plug to install is the VENT plug. Maybe other motors have a different procedure

[@woronick]

In your description it says this is about the same for every outboard from 4hp to 350hp. I have recently acquired a 2.5 hp Johnson and a 3.5 hp Nissan. Is there a different procedure for smaller outboards?

[@jerryebner159]

do you run the engine to get everything hot before you drain it ?

[@philliangbeihai5388]

WTF....🥴

[@bigdil0069]

Very informative, thank you! I'm about to work on several small motors and this will help.

[@Rowintelplus]

+bigdil0069 Happy to help! Let us know if you run into any trouble in your upcoming projects!

[@kishorebaburevu9980]

Dear sir good morning, I have tohatso 50hp engine but lost day air entered in fuel line engine is not starting. A, B, c, Ligts flashing in indicator, plz share to me air remove trouble resolved vedio. I am waiting for your helf..

[@dcg19800]

Is it the same oil for a 3.3 hp motor?

[@dcg19800]

Excellent video!

[@alejandrozevallos748]

Thanks !

[@eamonnocarroll5866]

Thanks

[@elexmarama7089]

Very interesting