If you're trying to fix a rattle or a feed issue, finding a solid dewalt 733 planer parts diagram is basically the first step toward saving your sanity. There's nothing quite like the feeling of taking a tool apart, getting halfway through, and realizing you have no clue where that one specific washer came from. I've been there more times than I'd like to admit. The DW733 is a classic "lunchbox" planer, and honestly, even though it's an older model, it's still one of the most reliable machines you can have in a small shop. But like any piece of machinery that spins at high speeds and eats wood for breakfast, things are going to wear out eventually.
Why the diagram is your best friend
When you look at a dewalt 733 planer parts diagram, it might look like a chaotic mess of lines and numbers at first glance. However, it's actually a roadmap. These "exploded views" show every single nut, bolt, and gear in the exact order they're supposed to be assembled. If you're a visual learner, this is a lifesaver.
The beauty of the 733 is its simplicity compared to the newer three-knife models, but it still has a lot of moving parts tucked away inside that yellow plastic housing. Most people dive into a repair thinking they'll remember where everything goes, but three days later when the replacement part finally arrives in the mail, that memory has usually gone out the window. Keeping the diagram open on a tablet or printed out on your workbench saves you from that "leftover screw" anxiety.
Navigating the carriage assembly
The carriage is the "head" of the planer—the part that moves up and down. This is where most of the action happens and, consequently, where most of the wear and tear occurs. If you check your dewalt 733 planer parts diagram, you'll see the cutterhead assembly right in the middle of it all.
One thing that often trips people up is the height adjustment mechanism. There are four threaded posts that keep the carriage level. If your planer is snipping wood or the head feels loose, you might need to look at the nuts and brackets shown in that section of the diagram. It's also where the scale and the pointer live. If your cuts aren't matching what the little red needle says, you might just need to adjust a screw, but seeing how that needle connects to the frame helps you understand why it's off.
Dealing with the feed rollers
This is probably the most common repair area for the DW733. If your boards are getting stuck or you're having to push them through manually, your rollers are either filthy or the rubber has started to degrade. Looking at the dewalt 733 planer parts diagram, you'll notice two main rollers: the infeed and the outfeed.
They are held in place by some fairly beefy springs and bushings. Over time, sawdust gets packed into these spots, and the rollers can't move up and down freely. When you pull the side panels off, use the diagram to locate the "E-clips" or retaining rings. Be careful with these! They have a habit of flying across the room and disappearing into a pile of shavings. The diagram will show you exactly which way the sprocket and chain assembly sits on the end of those rollers. If you put the chain back on with too much or too little slack, you're going to hear some pretty scary grinding noises.
The drive belt and motor brushes
If the motor is screaming but the blades aren't spinning, your drive belt has likely snapped or slipped. The dewalt 733 planer parts diagram will show you the relationship between the motor pulley and the cutterhead pulley. Replacing the belt is actually one of the easier jobs, but you have to make sure you get the tension right.
While you're in there, it's worth checking the carbon brushes. On the diagram, these are usually found near the back of the motor housing under two small plastic caps. If your planer is sparking a lot or starting to lose power, the brushes might be worn down to nubs. It's a five-minute fix that can make the machine feel brand new again.
Tips for a smooth disassembly
Before you start unscrewing everything in sight, take a second to prep. Even with a good dewalt 733 planer parts diagram, repairs go a lot smoother if you stay organized.
- Take photos: Use your phone to snap pictures at every stage. The diagram shows where things should go, but your photos show how they actually looked before you touched them.
- Muffin tins are great: Use a muffin tin or an egg carton to organize the screws and small parts. Label each section based on the part of the diagram you're working on (e.g., "Side Cover," "Table Extensions," "Motor Mount").
- Clean as you go: Planers are dust magnets. Since you've already got the covers off, grab a shop vac and a brush. Getting the old grease and packed-in sawdust out makes it much easier to see what the diagram is actually pointing to.
Finding the right part numbers
One of the most useful things about a dewalt 733 planer parts diagram isn't just the picture—it's the parts list that usually comes with it. DeWalt has several "types" of the 733 (like Type 1 and Type 2). It is super important to check the nameplate on your machine to see which version you have.
Sometimes a screw or a bearing changed between versions, and if you order the wrong one, it might not fit. The diagram will give you a specific reference number (like "Item 42"), which matches a manufacturer part number. Use that part number when searching online to make sure you're getting the exact OEM replacement or a compatible after-market part.
Common parts to keep on hand
If you use your planer a lot, there are a few things you might want to keep in a drawer so you don't have to stop a project halfway through:
- Extra knives: Obviously. Dull knives make the motor work harder and produce terrible finishes.
- A spare drive belt: These don't last forever, and they always seem to break on a Sunday afternoon when the hardware store is closed.
- Brush sets: They're cheap and easy to swap.
- Feed roller springs: Sometimes these lose their "boing" after twenty years of use.
Reassembling without the leftovers
Putting it back together is usually where the dewalt 733 planer parts diagram proves its worth. Follow the diagram in reverse, but pay close attention to the orientation of parts. For example, the cutterhead bearings usually have a specific way they need to seat. If they're slightly off-kilter, you'll get vibration that ruins your wood and eventually kills the machine.
Don't over-tighten the screws into the plastic housing. It's easy to strip the threads if you're using a power drill. I usually start them by hand and then give them a snugging up with a screwdriver.
Keeping your DW733 running forever
The DW733 is a workhorse, but it isn't invincible. Periodic maintenance using your dewalt 733 planer parts diagram as a reference can keep it running for decades. Every few months, I like to open the side panels, blow out the dust, and put a tiny bit of dry lubricant on the chains and gears. Avoid using oily greases if you can, because they just turn into a sticky paste once the sawdust hits them.
If you treat the machine well and use the diagram to troubleshoot small issues before they become big ones, you'll find that this planer is one of the best investments you've ever made for your shop. It's loud, it's messy, but it's incredibly effective at turning rough-sawn lumber into beautiful, flat boards. Happy fixing!