Need diagram where oil plugs are to change oil on a 1998 harley electrc glide classic

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How to Change the Fork Oil on 2012 Harley Davidson Street Glide Cycles Capacities and Fluid Requirements Fork Filling Quantities

It's on the bottom of the transmission. The oil tank for the engine is there.

The oil pan is on the bottom of the transmission. Look under the transmission and you'll see two drain plugs. The one closest to the front left corner is the engine oil drain. The one closest to the center is the transmission drain.

Good Luck
Steve

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if your looking under the bike your oil drain plug will be the one facing forward on the oil pan and it will take a 5/8" wrench to remove it, there is also an identical drain plug facing down that is for draining the transmission oil.

Everyone has their favorite spark plugs and oil. As for spark plugs, I like NGK plugs because I've had less problems with them than any other plug I've ever run.

As for oil, it depends on whether you're talking petroleum based or synthetic. Aftermarket petroleum based, I like RevTech. Aftermarket synthetic Mobil V-Twin.

the crankcase drain plug is under the engine, but the skid plate is covering it, thats why you dont see it. oil changing is done by removing the drain plug of the oil tank

No oil pan plug, it is a sump system. Just find the oil tank, drain it, change the filter.