Help. I need to drain the oil from my PR600y21RP mower but cannot figure out where/how to drain the oil!!!

The oil drain plug is usually on the bottom of the engine. ,if not you may have to turn the mower on it's side and drain the oil out the fill tube.

on push mower i run them out of gas turn it on its side and drain it from the dip stick tube

see if the oil smells like gas the carb maybe sticking and gas gets into the oil washing the oil out this will make hard starting and smoke if so the needle valve is not sealing if you caught in time without major engine damage a sign is the oil being over full and smelling like gas

Hi,
Many of the newer lawn mower engines do not have a drain plug anymore... to drain the motor you will need to dump them upside down and run the old oil out of the fill pipe....yeah, it's dumb, but I bet 95% of the people never drain their oil....

heatman101

Hi patsy hale...
You need to drain the over fill of oil out of your mower, if not it could damage the engine, if it has not already done so.
If you have a drain plug it will be on the bottom of the engine under the mower housing.
Remove and drain out until you reach the right level the oil should be at.
If you do not have a drain plug under the mower then you will have to tip the mower over on its side with the oil fill plug out and drain the excess oil that way till you reach the proper level.
I hope you have not done permanet damage already, if it still smokes after a a few minutes of running then you do have major problems.
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Hi stnstomper...

Look under the mower for a square plug or allen wrench type plug, this will be your oil drain for the motor.
Some of Briggs & Stratton motors do not have an oil drain plug...
If you do not have an oil drain plug then you will have to run the mower to get it warm, then remove the oil fill plug and tip the mower towards the oil fill plug to drain out the oil thru the fill plug hole.
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Hi pt--
If you are certain the oil is overfilled, then yes, this should be the problem. Single cylinder engines have little tolerance for excess oil in the crankcase. Since you're at it, you may as well change the oil in the mower while you have this all apart. In order to do this safely, be sure you have disconnected the spark plug wire from the top of the plug. You do not want the mower to start while you are under it. If you are unsure, ask someone who knows how to do this safely. You should also do this on a cool mower, as gasoline could leak from the tank or carburetor and pose a burning and fire risk. That said:

To change the oil on a single-cylinder lawnmower:
1) Gather materials.
--You'll need a pan or an old bucket to catch old oil, preferably one that has enough capacity for the old oil while also allowing the mower to be positioned with all four wheels on the ground.
--Some rags.
--A set of wrenches or a socket set.
--Two fresh quarts of new motor oil of the recommended viscosity for your particular lawnmower.
2) Disconnect the spark plug from the ignition wire. You'll see a cable running to the top of the spark plug. Grab it firmly at the boot that sits atop the plug and pull firmly. If it doesn't come off easily, be sure you are pulling at the right spot.
3) Tip the mower either backwards or on its side and look underneath the cutting deck. Be careful, as gasoline may spill from the engine's tank. You should see a small square-head or hex-head plug directly below some point of the engine. That is the engine's oil-drain plug. CAUTION: You may need to rotate the cutting blade to gain access to this plug. Be aware that the blade can cut you and that if the mower starts now it can cause serious injury to yourself.
4) Locate the correctly sized wrench or socket that mates to the drain plug.
5) Using a correctly sized wrench or socket, carefully and slowly loosen the drain plug until it turns freely by hand.
6) Position your drain pan beneath the engine's drain plug.
7) Unscrew the drain plug by hand until the oil drains free. Setting the mower down on level ground with all four wheels will ensure the most old oil drains from the engine at this point. Go ahead and open the engine's oil fil cap at this time, as this also allows the oil to drain freely.
8) When the oil has stopped draining from the engine--usually a slow drip is ok--you can replace the drain plug by hand. Be sure the plug turns freely by hand--do not crossthread the plug as you will create a costly repair for yourself.
9) Tighten the plug snug--NOT samson tight--with the correct wrench or socket and wipe any oil present at the plug or surrounding area clean with a rag.
10) Remove the pan from below the mower and rest your mower on all four wheels.
11) Slowly fill the mower's cranckase to full with fresh motor oil. Often, less than a single quart is necessary. Go slow and do not overfill.
12) Tilt the mower backwards again and check for oil leaks at the plug. You may need to snug up the oil drain plug one more time before the first after-oil-change start.
13) Lower the mower, reconnect the spark plug, and start the mower. Let it run for about a minute and listen to the mower for any "bad" sounds. If you hear anything out of the ordinary, shut off the mower immediately and recheck the mower for abnormalities.
14) Shut the mower off.
15) Check the oil level. You may have to top off the fluid level again, as running the engine tends to let the fluids settle out.
16) Disconnect the spark plug once more.
17) Tilt the mower and check the drain plug one more time for leaks. Snug it up as necessary.
18) Let the mower back down to the ground and reconnect the spark plug to the ignition wire.
You should be ready to mow again. Remember to be aware of any oil drips as push the mower around after a recent change--that may indicate the plug is leaking. There is a great picture of what a mower's drain plug looks like in the link below. Just scroll down to the part where you see the picture labeled 'oil drain plug.'
http://floridagardener.com/misc/tuneup.htm
--Hope this helps, Joe.

Todays walk-behind mowers are designed to drain the oil right out of the fill tube. Position you catch pan beside the mower and tilt the mower over the pan.Be sure the air filter is on the "up"side. Once all the oil is drained uot add the proper amount of oil,let the mower set for a few hours and you're good to go!

Like the other guy says drain the oil out. Disconnect the spark plug wire (for safety). Place the mower onto a stable platform to work from. To remove the drain plug usually you need a 3/8 ratchet and I use a short extension so I don't skin my knuckles. Put the extension end into the drain plug and remove. Have a drain pan to catch the used oil. Clean the area around drain plug first. When oil is drained replace the drain plug and tighten. Add your new oil. ONLY ADD ABOUT 15 OUNCES. Use SAE 30 motor oil. Once you get the oil in set it on a flat surface and check for the proper level. Add if needed. Usually the push mowers only use about 16 ounces. I start with 15 because it is easier to add than remove the oil. Replace the spark plug wire, prime and start. It may smoke awhile to get the old oil burnt up.

Most mowers have a drain plug on the bottom of the engine on the side. Look for a drain plug with a square head - this is also usually how you check oil level (in many mowers). this is applicable to both riding and push mowers.