When it comes to removing and installing pedals there are only a few things you have to know to accomplish the task properly.
Choose the right tool
For most pedals a standard 15mm pedal wrench will be the most universally applicable tool to install and remove pedals. However, many pedals now are coming hex wrench compatible in either 6mm or 8mm sizes. We prefer to use the hex wrench when it comes to our installs and removals as we find it slightly more efficient to quickly thread the pedals on and off.
The left pedal is a reverse thread!
Take note! The left side pedal is always reverse thread on bicycles. So that counter-clockwise to tightern and clockwise to loosen. If you're stuck and not able to figure out why that pedal isn't threading, take a closer look and likely you have the wrong side. Most pedals do come with markings indicating "R" or "L" but if they aren't stamped just compare the thread to each other and you'll notice one looks backwards.
Don't forget to grease
A common step skipped by many. Always be sure to grease the threads before installation. This will prevent the threads from seizing over time. The type of grease is your final decision, we prefer waterproof grease like the one from Maxima. With many other options from TriFlow, Parktools, Shimano, etc. Check your local bike shop to see what's available.
Snug it down
Refer to your manual or manufacturer for a torque spec, but a good rule of thumb is to get it nice and snug, no need to go over the top though.
