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STARTUP

Always use this startup procedure to ensure that the unit
is started safely and properly.

1.

Check oil levels.

Engine: Add SAE 30 or 10W–30 weight detergent
oil as necessary.

Pump: Add SAE 20 or 30 weight non–detergent oil
as necessary.

NOTE:  This pressure washer is equipped with a

low–oil sensor that shuts the engine off if the
oil level falls below a certain level. If the unit
stops unexpectedly, check both the oil and the
fuel levels. Check the oil level each time the
unit is refueled.

2.

Check fuel level.

WARNING

DO NOT refuel a hot engine. Refueling a hot
engine could cause a fire. Use only fresh, clean
regular or unleaded gasoline. Close the fuel
shutoff valve during refueling.

3.

Turn on the water supply.

CAUTION

Never run the unit dry. Costly damage to the pump
will result. Always be sure the water supply is
completely turned on before operating.

4.

Trigger the gun until water sprays from the tip
indicating that the air is purged from the system.

5.

Open the fuel shutoff valve. Be sure the spark plug
ignition cables are pushed firmly onto the spark
plugs. Put the ignition shutoff switch in the “on”
position and the throttle in the “run” position.

6.

Start the engine.

NOTE:

For easier starting, have one person start the
pressure washer while another person
triggers the spray gun.

If the engine is cold, completely close the engine
choke.  Press the start button. In cool weather, the
choke may have to be kept closed for 10 to 30
seconds before opening it to keep the engine
running. Otherwise, open the choke as soon as the
engine starts.

If the engine is warm, leave the choke open or
partially closed. Start the engine as described in the
preceding paragraph. When the engine starts, be
sure to open the choke completely.

7.

ALWAYS engage the gun’s trigger safety latch
whenever you stop spraying, even for a moment, to
reduce the risk of fluid injection or splashing in the
eyes or on the skin if the gun is bumped or triggered
accidentally.

8.

ALWAYS observe the following CAUTIONS to
avoid costly damage to the pressure washer.

CAUTION

DO NOT allow the pressure washer to idle for more
than 10 minutes. Doing so may cause the
recirculating water to overheat and seriously
damage the pump. Turn off the pressure washer if it
will not be spraying or cleaning at least every 10
minutes. If heated inlet water is used, reduce this
time further.

DO NOT run the pump dry, which will quickly
damage the pump. Be sure the water supply is fully
turned on before starting the pump.

DO NOT operate the pressure washer with the inlet
water screen removed. This screen helps keep
abrasive sediment out of the pump, which could
clog or scratch the pump. Keep this screen clean.

DO NOT pump caustic materials; such materials
may corrode the pump components.

9.

See the chemical injector or sandblaster kit manual
for detailed cleaning information if these
accessories are used.

Summary of Contents for HYDRA-CLEAN 3050 Instructions-

Page 1: ...psi 207 bar OPERATING PRESSURE 3400 psi 234 bar MAXIMUM WORKING PRESSURE HYDRA CLEAN 3540 13 HP ENGINE P N 800 635 Series A P N 800 636 Series A 3500 psi 241 bar OPERATING PRESSURE 3900 psi 269 bar MAXIMUM WORKING PRESSURE HYDRA CLEAN 4043 16 HP ENGINE P N 800 637 Series A 4000 psi 276 bar OPERATING PRESSURE 4300 psi 296 bar MAXIMUM WORKING PRESSURE GRACO INC P O Box 1441 MINNEAPOLIS MN 55440 1441...

Page 2: ...gs injected directly into the bloodstream Consultation with a plastic surgeon or reconstructive hand surgeon may be advisable Pressure Relief Procedure To reduce the risk of serious bodily injury including fluid injection and splashing in the eyes or on the skin always follow this procedure whenever you stop spraying for more than 10 minutes when shutting down and before checking or repairing any ...

Page 3: ... the maximum working pressure of this sprayer DO NOT exceed the maximum working pressure of any component or accessory used in the system Chemical Compatibility BE SURE that all chemicals used in the chemical injector are compatible with the wetted parts of the hose gun wand and tip as given in the Technical Data inside back cover Always read the chemical manufacturer s literature before using any...

Page 4: ...ssure washer to prevent discharging high pressure fluid from the gun TERMS WARNING Alerts user to avoid or correct conditions that could cause bodily injury NOTE Identifies helpful procedures and information CAUTION Alerts user to avoid or correct conditions that could cause damage to the equipment IMPORTANT United States Government safety standards have been adopted under the Occupational Safety ...

Page 5: ...hose may be used Longer hoses may affect sprayer performance and chemical injector performance if used Install the appropriate spray tip on the wand See Installing and Changing Spray Tips If you are using a sandblaster kit see its separate manual for installation instructions Connect to Water Supply CAUTION Before attaching to the water supply check your local plumbing code regarding cross connect...

Page 6: ...e the engine choke Press the start button In cool weather the choke may have to be kept closed for 10 to 30 seconds before opening it to keep the engine running Otherwise open the choke as soon as the engine starts If the engine is warm leave the choke open or partially closed Start the engine as described in the preceding paragraph When the engine starts be sure to open the choke completely 7 ALW...

Page 7: ... Spray Tips WARNING To reduce the risk of serious bodily injury including fluid injection or splashing in the eyes or onto the skin use extreme caution when changing spray tips ALWAYS follow the procedure below 1 Follow the Pressure Relief Procedure 2 Point the gun and wand away from yourself and anyone else 3 Without holding your hand over the spray tip A pull back the quick coupler ring B Remove...

Page 8: ... pressure washer with a clean damp cloth 3 Perform the appropriate maintenance See maintenance chart MAINTENANCE Observing regular maintenance intervals helps ensure that you get maximum performance and life from the pressure washer There is a break in period for the engine and pump After changing the oil in these components following their respective break in periods the interval between required...

Page 9: ...alves Even a small particle can cause the valve to stick Restricted inlet Worn inlet or discharge valves Leaking high pressure hose Replace with tip of proper size Clean Check more frequently Check filter Replace packings See PUMP SERVICE Check water flow rate to pump Tighten or replace use correct belts and replace both at same time Clean inlet and discharge valve assemblies Check filter Check ga...

Page 10: ...63 5 63 5 76 48 45 5 47 82 80 81 22 83 84 79 5 78 21 24 1 2 5 5 6 12 5 2 25 17 13 14 16 5 23 71 72 73 74 31 70 33 34 35 36 29 2 5 28 20 19 18 51 32 30 89 92 90 91 39 77 46 1 2 2 48 50 49 4 5 6 7 62 37 37 57 58 52 53 61 60 9 58 57 56 59 55 54 11 10 8 64 15 76 77 87 88 87 86 85 89 3 38 27 65 40 87 26 42 69 ...

Page 11: ...4 800 392 GUN WAND ASSEMBLY incl 42 65 66 67 68 69 1 45 100 023 WASHER Flat 5 16 used on 800 635 only 1 803 526 SPACER used on 800 636 only 1 46 801 217 BUMPER Rubber 1 REF PART NO NO DESCRIPTION QTY 47 177 144 LABEL Belt Guard 1 48 803 535 SCREW Cap Hex hd used on 800 635 only 1 801 559 SCREW Cap Hex hd used on 800 636 only 1 49 803 942 SHEAVE Pump 1 50 801 898 HUB Engine 1 51 801 135 HUB Pump 1 ...

Page 12: ...5 47 82 80 81 22 83 84 79 5 78 21 24 1 2 5 5 6 12 5 2 25 17 13 14 16 5 23 71 72 73 74 31 70 33 34 35 36 29 2 5 28 20 19 18 51 32 30 46 1 2 2 48 50 49 4 5 6 7 62 37 57 58 52 53 61 60 9 58 57 56 59 55 54 11 10 8 64 15 76 77 87 88 87 86 85 89 3 38 45 66 68 43 69 26 42 41 75 67 44 27 65 2 26 42 69 ...

Page 13: ...0 1 42 803 157 QUICK COUPLER Female 3 8 incl 26 2 43 801 568 QUICK COUPLER Male 3 8 2 44 800 429 GUN WAND ASSEMBLY incl 42 45 65 thru 69 1 45 802 851 HANDLE Tee 1 REF PART NO NO DESCRIPTION QTY 46 801 217 BUMPER Rubber 1 47 177 144 LABEL Belt Guard 1 48 803 535 SCREW Cap Hex hd 1 49 803 944 SHEAVE Pump 1 50 801 898 HUB Engine 1 51 801 135 HUB Pump 1 52 801 959 TERMINAL PROTECTOR Black1 53 801 945 ...

Page 14: ...43 69 26 42 41 44 75 66 63 5 76 45 5 47 82 80 81 22 83 84 79 5 78 21 24 1 2 5 5 6 12 5 2 25 17 13 14 16 5 23 71 72 73 74 31 70 33 34 35 36 29 2 5 28 20 19 18 51 32 30 77 46 1 2 2 48 50 49 4 5 6 7 62 57 58 52 53 61 60 9 58 57 56 59 55 54 11 10 8 64 15 3 38 27 65 37 26 42 69 ...

Page 15: ...8 PUMP ASS Y see page 16 1 41 801 571 HOSE High Pressure 3 8 x 50 1 42 801 569 QUICK COUPLER Female 3 8 incl 26 2 43 801 568 QUICK COUPLER Male 3 8 2 44 800 392 GUN WAND ASSEMBLY incl 42 65 66 67 68 69 1 REF PART NO NO DESCRIPTION QTY 45 803 526 SPACER 1 46 801 217 BUMPER Rubber 1 47 177 144 LABEL Belt Guard 1 48 801 559 SCREW Cap Hex hd 1 49 801 004 SHEAVE Pump 1 50 801 898 HUB Engine 1 51 801 13...

Page 16: ...el 3050 3500 4000 psi used on Models 3540 4043 65 67 66 64 63 55 50 49 48 57 58 59 60 61 62 46 47 44 45 10 9 8 7 6 5 4 1 3 2 10 9 11 52 51 54 53 13 14 18 19 56 20 12 43 42 16 17 40 15 41 14 39 12 21 23 22 24 26 33 32 28 29 30 31 27 25 34 35 36 31 37 38 11 44 45 ...

Page 17: ...109 RING Long Life 48 801 526 BRACKET Pump 2 49 802 305 SCREW Cap socket hd 4 50 802 304 WASHER Lock 2 51 801 482 PLUG Hex 1 52 801 483 WASHER Flat 1 53 801 484 PLUG Hex 1 54 801 485 WASHER Flat 1 REF PART NO NO DESCRIPTION QTY 55 801 624 PUMP 3000 psi 1 803 508 PUMP 3500 4000 psi 1 56 803 083 LABEL Keep From Freezing 3000 psi 1 803 517 LABEL Keep From Freezing 3500 4000 psi 1 57 802 085 NIPPLE 1 ...

Page 18: ... seals 3 Carefully examine each plunger for any scoring or cracking and replace as necessary Servicing the Plungers NOTE Plunger repair kit P N 801 474 or 803 510 is available to replace retainers o rings washers and backup rings for three cylinders 1 Loosen the plunger retaining screw five to six turns using an M10 wrench Push the plunger towards the crankcase to separate the plunger and retainin...

Page 19: ... paint Requires a spray tip which is not included in kit 3245 uses 801 667 4040 uses 801 600 ANTI FREEZE FLUSH KIT 802 327 For flushing system with 50 anti freeze solution prior to transporting or storing pressure washer in below freezing temperatures INLET PRESSURE REGULATOR 800 258 Regulates inlet water pressure to 60 psi 4 bar maximum TECHNICAL DATA Model 800 681 Model 800 635 Model 800 636 Mod...

Page 20: ...ade at a reasonable charge which charges may include the costs of parts labor and transportation DISCLAIMERS AND LIMITATIONS THE TERMS OF THIS WARRANTY CONSTITUTE THE PURCHASER S SOLE AND EXCLUSIVE REMEDY AND ARE IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE AND OF ANY NON CONTRACTUAL LIABILITIES INCLUDING P...

Page 21: ...sembly 00045 ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ Replaced by 805 547 ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 800 315 ÁÁÁ ÁÁÁ 34 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Tip assembly 15045 ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ Replaced by 805 548 ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 800 316 ÁÁÁ ÁÁÁ 35 ÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁ Tip assembly 25045 ÁÁÁÁÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁÁÁÁÁ Replaced by 805 549 ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ ÁÁÁÁÁ 800 31...

Page 22: ...R Lock 6 34 KIT 6 or 107 WASHER Flinger 3 35 801 490 PLUNGER Ceramic 3 803 502 PLUNGER Ceramic 3 36 KIT 6 or 107 RING Backup 37 KIT 6 or 107 WASHER 38 KIT 6 or 107 SCREW Piston 39 803 295 COVER Crankcase 1 803 505 COVER Crankcase 3500 4000 psi 1 40 803 296 SHIM 2 41 KIT 3 SEAL Oil 42 KIT 28 or 112O RING 43 KIT 28 or 112RETAINER Packing 44 KIT 28 or 112PACKING Kit 8 or 109 45 KIT 28 or 112RING Head...

Page 23: ... WASHER SCREW Piston 1 1 1 1 1 109 803 511 Packing 4000 psi 44 47 PACKING RING Long life PACKING 3 3 3 112 803 512 Packing Retainer 4000 psi 42 43 44 45 46 47 O RING RETAINER packing PACKING RING head RETAINER packing RING Long life PACKING 1 1 1 2 1 1 1 The following changes apply to the page17 parts list for pump asssembly of Models 3540 and 4043 only Assembly No Series Letter Change Part That C...

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