The 490 has three generations and two pumps. The original Ultra Max II 490 (249911, 249913, 249914) uses bolted pump 246428. Both 490 PC Pro generations use 17C487 on the ProConnect mount. The sharper difference is the motor: the first two generations are brushed and the current 17E852 and 17E853 use a MaxPower brushless motor with no brushes to replace. Maximum tip on all of them is 0.023 in, and the minimum generator is 3,500 W.
- Three Generations of 490
- The Pump Question: 246428 or 17C487
- The Motor Change That Ends Brush Replacement
- Main Assembly Callout Reference
- The Repair Kit: 244194 and 18B260
- Filtration and Fluid Path
- Power, Generators and Cords
- Tip Size: The 490's Real Ceiling
- Symptom Diagnosis
- Which Manual Applies
- Frequently Asked Questions
The 490 sits in the most crowded part of Graco's electric range. It shares a parts manual with the 395, the 495 and the 595, shares a pump with some of them and not others, and has been through three distinct generations without changing its name. Searching for 490 parts therefore returns a mixture of components from machines that only resemble yours.
The useful starting point is not the parts list. It is working out which of the three machines you are holding, because that one answer resolves the pump, the motor and most of the troubleshooting path at once.
1. Three Generations of 490
Gen 1: Ultra Max II 490
249911 · 249913 · 249914Documented in the shared 395/495/595 manual. Conventional bolted pump.
- Pump 246428
- Brushed motor
- Rebuild the pump in place
- Shares the pump with the 395 and 495
Gen 2: 490 PC Pro
17C327 Stand · 17C332 Hi-BoyProConnect arrives. The pump becomes a swappable lower rather than a rebuild in place.
- Pump 17C487
- Brushed motor
- Endurance pump lower
- Also fits 390 PC and 395 PC
Gen 3: 490 PC Pro
17E852 Stand · 17E853 Lo-BoyCurrent production. Same pump as Gen 2, completely different motor and control.
- Pump 17C487
- MaxPower brushless motor
- SmartControl 3.0
- Stand 34 lb, Lo-Boy 59 lb
Performance is close enough across all three that it is not a useful way to tell them apart: 3,300 psi, 0.54 gpm, a 0.023 inch maximum tip and a 1.0 horsepower motor rating. What differs is how you service them.
Look at the pump mount first. A quick change collar that releases the pump without tools means ProConnect, so Gen 2 or Gen 3. A bolted pump means Gen 1 and part 246428. To separate Gen 2 from Gen 3, look at the control: SmartControl 3.0 and a model number beginning 17E places you in current production with a brushless motor. If the label is readable, the model number settles it outright.
2. The Pump Question: 246428 or 17C487
This is the expensive decision, and the fit lists overlap in a way that makes it easy to order the wrong one.
| 246428 | 17C487 | |
|---|---|---|
| Mount | Bolted, tools required | ProConnect, no tools |
| Fitted to | Ultra Max II 490 Gen 1 | 490 PC Pro Gen 2 and Gen 3 |
| Also fits | Ultra 395, Ultra 495, Ultra Max II 495, Ultra 595, Ultra Max II 595 | 390 PC, Ultra 395 PC, Ultra Max II 495 and 595 |
| Service | Rebuild in place with a packing kit | Swap the lower, rebuild off the machine |
| Callout | 41 in manual 309675 | Separate PC Pro documentation |
Both pumps rebuild with the same packing kits, covered in section five. That is the part worth knowing: the pump body differs, the wear parts inside do not.
ProConnect is genuinely faster, but there is a case for Gen 1 that rarely gets made. The 246428 is shared across six machines, which means a shop running a 395, a 490 and a 495 services one fluid section rather than three. That is one packing kit on the shelf covering the whole fleet. If you are buying used and the choice is between a tidy Gen 1 and a tired PC Pro, the parts commonality is worth real money.
3. The Motor Change That Ends Brush Replacement
This is the finding that matters most for anyone troubleshooting a 490, and it is almost never stated plainly.
Brushed or brushless, by generation
The repair path for a motor fault is completely different depending on which you have.
Gen 1 & Gen 2 BRUSHED Gen 3 BRUSHLESSOn Gen 1 and Gen 2, worn brushes are a routine, inexpensive repair and a sensible first thing to inspect on a motor that runs weakly or intermittently. Gen 1 motors appear in the parts manual as 287014, 287015 and 248184 depending on configuration. On Gen 3 the MaxPower brushless motor has no brushes, so a search for 490 motor brushes will produce parts that cannot be fitted. A weak or intermittent Gen 3 motor is a control, wiring or supply problem until proven otherwise.
The practical consequence is that half the 490 troubleshooting advice online is aimed at a machine you may not own. Before buying anything electrical, establish which generation you have.
4. Main Assembly Callout Reference
These are the reference numbers from Graco's shared parts manual 309675, which covers the Ultra 395, 495 and 595 alongside the Ultra Max II 490, 495 and 595. If you are working from that document, this is the key.
| Ref | Component | Part | Notes |
|---|---|---|---|
| 41 | Displacement pump | 246428 | Gen 1, bolted |
| 16 | Fluid filter, 60 mesh | 246384 | Reusable, clean rather than replace |
| 35 | Drain valve | 235014 | Common failure point |
| 38 | Pressure control transducer | 243222 | Check before the control board |
| 40 | Gear reducer | 287057 | |
| 42 | Drive housing | 287055 / 287899 | Two variants by production |
| 43 | Connecting rod | 287053 | |
| 54 | Motor, 120 V | 287014 / 287015 / 248184 | Configuration dependent, brushed |
| 56 | Power cord | 15B119 / 15B258 / 15D029 | Configuration dependent |
| 58 | Toggle switch | 195429 | |
| 60 | Suction tube / kit | 246386 / 246387 / 15B506 | Stand and Hi-Boy differ |
| 46 | Hose assembly | 240794 | BlueMax II, 1/4 in x 50 ft |
References 42, 54, 56 and 60 each list more than one part number because they change with configuration and production date. These are the four places a 490 order goes wrong. For any of them, give us the full model number from the label rather than ordering from the callout number alone. A drive housing that is nearly right is a drive housing you will be sending back.
Graco 490 Parts
−28%
Graco
Graco 17C487 Endurance Chromex Piston Pump replaces Graco 17C721
Part #: 17C487
(1)
$295.63
$410.00
Save $114.37
−30%
Graco
Graco 18B260 Pump Packing Kit for Graco 290 to 595 Sprayers
Part #: 18B260
(1)
$74.62
$106.00
Save $31.38
5. The Repair Kit: 244194 and 18B260
These two kits cause more confusion than any other part on this family, and the confusion is unnecessary. They do the same job.
| Kit | What it is | Stated coverage |
|---|---|---|
| 244194 | Standard pump packing repair kit | 390, 395, 490, 495, 595 |
| 18B260 | MaxLife packing repair kit | Graco 290 through 595 |
Both rebuild the same pump. The choice is between the standard packing set and the longer life version, not between two different fits. Our 18B260 pump packing repair kit listing covers the MaxLife option.
Whichever you fit, the honest advice is the same one we give on every pump: rebuild at the first sign of throat weeping rather than waiting. A packing kit is a fraction of the cost of a pump, and a pump run on failed packings takes the rod and cylinder with it. The detail on seal selection and orientation is in our guide to Graco o-rings, seals and packing kits.
6. Filtration and Fluid Path
Fluid filter 246384 is a 60 mesh reusable element. Reusable is worth emphasising because these get thrown away when they should be cleaned, and more importantly they get left in beyond the point where they were protecting anything.
Drain valve 235014 is the quiet troublemaker on this family. When it stops sealing, the machine loses prime between uses and the symptom presents as a pump problem. It is an inexpensive part and the check is simple: with the machine pressurised and the valve closed, nothing should return to the bucket.
On a 490 that will not hold pressure, the order to check is drain valve, then fluid filter, then gun filter, then pump packings. The first three cost a small fraction of the fourth and resolve the majority of cases. We would rather sell you a 235014 today than a pump you did not need.
The fluid outlet is 1/4 in npsm across all three generations, so hose and whip assemblies carry forward without the thread trap that catches people on the GMAX 5900 IronMan.
7. Power, Generators and Cords
The 490 draws 12 amps at 120 volts, and Graco specifies a 3,500 watt minimum generator. That number is worth writing on the machine.
An undersized generator will usually start a 490 and then fail under spraying load. The symptoms look electrical in the worst possible way: the machine cuts out, the pressure wanders, the control appears faulty. Technicians have replaced control boards over this. Check the generator plate before you check anything inside the machine.
Extension cords cause the same class of fault. A long run of undersized cord drops voltage at the motor and produces identical symptoms. Power cord callout 56 has three part numbers (15B119, 15B258, 15D029) because the machine shipped with different cords, so confirm which yours takes before replacing it.
8. Tip Size: The 490's Real Ceiling
The maximum tip on a 490 is 0.023 inch. That is the specification, not a conservative recommendation, and it follows directly from 0.54 gpm.
Fitting a larger tip does not produce more output. It produces a starved pattern with heavy tails, which looks exactly like a worn pump or a failing pressure control. This is one of the most common misdiagnoses on the machine, and it is the reason a parts order sometimes arrives when a tip change was the answer.
A 490 with a 0.027 tip fitted is not a 495. If your work has moved toward heavier coatings or larger orifices, the honest answer is a 495 or 595 rather than a parts order. We would rather tell you that than sell you a pump that will be back in the same condition. Orifice selection by coating is covered in our spray tip size chart.
Not Sure Which 490 You Have?
Send us the model number from the label, or a photograph of the pump mount, and we will confirm the right pump and motor before you order
Ask Our Parts Team Call +1 713-931-41029. Symptom Diagnosis
Will not hold pressure between uses
Primes fine, loses it after a pause or overnight.
Check in order: Drain valve 235014 not sealing → suction tube connection drawing air → inlet ball and seat → pump packings. The drain valve is first because it is cheap and it is the most common answer.
Pattern tails and will not fill out
Heavy edges, thin centre, worse at the top and bottom of the fan.
Check first: tip size against the 0.023 inch maximum, then tip wear. Then: fluid filter 246384 and gun filter. A tip above specification is the single most common cause and costs nothing to rule out.
Pressure wanders or the machine cuts out under load
Fine at low pressure, unstable when spraying.
Check first: generator rating against the 3,500 W minimum, then extension cord gauge and length. Then: transducer 243222 before the control board. Supply problems account for a large share of control board replacements that did not need to happen.
Motor weak or intermittent
Runs, but without conviction, or stops and restarts.
Gen 1 and Gen 2: inspect the brushes first. They are inexpensive and they wear. Gen 3: there are no brushes. Check supply, cord, switch 195429 and control before considering the motor itself.
Fluid weeping at the pump throat
Paint appearing where the rod enters the pump.
Cause: worn throat packings. Gen 1: rebuild in place with 244194 or 18B260. Gen 2 and 3: swap the 17C487 lower and rebuild the removed one off the machine. Do not defer this one.
Knocking from the drive
Audible knock under load, or visible play at the connecting rod.
Inspect: connecting rod 287053, drive housing 287055 or 287899, and gear reducer 287057. Before ordering: confirm which drive housing variant your model takes, because both numbers appear against the same callout.
10. Which Manual Applies
| Manual | Covers | Use it for |
|---|---|---|
| 309675 | Ultra 395 / 495 / 595, Ultra Max II 490 / 495 / 595 | Callout numbers and exploded views for Gen 1 |
| 310643 | Displacement pump repair, this family | Rebuild procedure and torque figures |
| PC Pro documentation | 490 PC Pro Gen 2 and Gen 3 | ProConnect machines, SmartControl |
Manual 309675 lists the Gen 1 model numbers on its cover: 249911, 249913 and 249914 for the 490, alongside the 395, 495 and 595 sets. If your model number is not on that cover, the callout numbers inside do not describe your machine. That single check prevents most of the part number errors on this family. Our manuals and data library has the documents.
11. Frequently Asked Questions
What pump does a Graco Ultra Max II 490 use?
There are two. The original Ultra Max II 490, models 249911, 249913 and 249914, uses displacement pump 246428, which is bolted in place and shared with the Ultra 395, Ultra 495 and Ultra Max II 495. The 490 PC Pro uses 17C487, an Endurance pump lower on the ProConnect quick change mount, which also fits the 390 PC, Ultra 395 PC and the Ultra Max II 495 and 595. The two are not interchangeable because the mounting system is different.
What is the maximum tip size for a Graco 490?
0.023 inch. The Ultra Max II 490 delivers 0.54 gallons per minute at up to 3300 psi, and 0.023 inch is the largest orifice it will support properly. Fitting a larger tip produces a starved, tailing pattern that is frequently misdiagnosed as a worn pump. If the work needs a bigger tip, the machine needs to be a 495 or 595 rather than a 490 with a larger tip fitted.
Which pump repair kit fits a Graco 490?
Kit 244194 is the long-standing packing repair kit for this pump family, covering the 390, 395, 490, 495 and 595. Kit 18B260 is the MaxLife equivalent and is listed as covering Graco 290 through 595 machines. Both rebuild the same pump, so the choice is between the standard packing set and the longer life version rather than between two different fits.
What generator size do you need to run a Graco 490?
Graco specifies a 3500 watt minimum generator for the Ultra Max II 490 PC Pro. The machine draws 12 amps at 120 volts. A smaller generator may start the sprayer and then fail under load, which produces symptoms that look like a motor or control fault. Check the generator rating before diagnosing anything electrical.
Can you replace the motor brushes on a Graco 490?
It depends on the generation. The original Ultra Max II 490 and the earlier 490 PC Pro use brushed motors, and brush replacement is a routine repair on those machines. The current 490 PC Pro, models 17E852 and 17E853, uses a MaxPower brushless motor, which has no brushes to replace. If you are searching for brushes for a machine that has none, the fault is elsewhere.
Which Graco manual covers the Ultra Max II 490?
Manual 309675 is the parts manual covering the Ultra 395, Ultra 495, Ultra 595 and the Ultra Max II 490, 495 and 595 together. Manual 310643 covers displacement pump repair for this family. The 490 PC Pro generations have their own documentation, so check that the manual cover lists your exact model number before working from its callout numbers.
Running 395, 490 and 495 Together?
The 246428 fluid section spans all three, so one packing kit covers the fleet. We can build you a spares list keyed to your actual machines
Wholesale & Fleet Pricing 490 Manuals