Where is the oil drain cork located in the g3025 models

under the Gearbox, there is a drainage cork. so you have to screw it out by using an L-key so that the old Oil can drain and close it again after the oil is empted and on the side of the box there is an inlet cork where you use to put CC oil ( Gearbox oil ) by screwing it out.

Could be the gasket for the whole oil pan that's leaking. That would let oil run down the oil pan, to where the drain plug is.

Fig. 1: Oil filter and drain bolt locations on 4-cylinder models
Fig. 2: Oil filter and drain bolt locations on 6-cylinder models

cork maybe

you will need a cork(wine bottle cork works best) shave the cork to fit the drain plug hole, drill a hole in the center of the cork to fit a manual air hose, place it in the hole hold firmly and hit the trigger

On many Tecumseh engines, there is a crankcase breather located under the flywheel. It has a cork gasket to seal the top plate of the breather. Either the rubber breather housing is cracked, or the cork gasket needs replaced.

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You can buy an oversized drain plug that will cut new threads. There is no need for replacement of the pan.

Any auto parts store should be able to sell you one.

Drain the transmission oil, then remove the side cover that is on the opposite side from the rear drive sprocket. You should see the clutch at that point. Remove the cover screws (count the turns) and start pulling disks and metal plates out of the hub--keep track of the order of removal. You need to replace only the cork faced plates, the metal disks hardly ever wear out. Count how many cork plates you need to purchase. There may be competition replacements that have better 'bite', but are not as smooth to operate. Be sure to replace with fresh oil when you are done and use a new gasket for the cover. Check the release rod in the center of the hub for straightness. Good luck!

then you need to replace the gaskets drain oil from oil pan take all bolts out and drop the pan as far as valve pan covers buy rubber gaskets not cork they are a lot more pliable and less prone to leak

Lose the Honda transmission oil. It may have swollen the cork on the friction plates. Go with 10w40 in the gearbox. Any major brand; Mobil, Shell, Quaker State, Pennzoil, etc.. Try the new oil and give the cork a week to shrink back down > if they will. You may need to put in a new set of plates.