some times there on the bottom of the motor, and some times there on the side of motor by the base, if you have a Push mower then it,s likey to be under the deck side at the bottom of the motor,
10w30 will do.
30W for summer
SAE 30W
Go to the drain plug and let some out
1/2 an inch
depending on what type of mower and who makes the motor it can vary. if it is a standard push mower you can either remove the dip stick/oil fill and dump the oil out there or look at the base of the motor for a plug or under the deck with the blade for a plug. if it is a riding mower there will be a plug at the base of the motor that can be removed to drain it
If its got a oil plug its a 4 cycle, 5w-30 motor oil
Find a drain plug or turn it on it side and dump the oil out.
most mowers run fine on 10W-30 automotive motor oil.
The best way to change the oil on a Craftsman Eager One lawn mower - 6.75 HP is to buy a Toro.
No for your lawn mower you will just need regular lawn mower oil.
There is no oil drain on a 650 series lawn mower. You have to turn the mower over and drain the oil from the spout you put it in the engine. Make sure the gas tank is empty