Graco AquaMax 804594 A Series, AquaMax 804596 A Series, AquaMax 804597 A Series, AquaMax DD6814, AquaMax DD9023 Instructions-parts List Manual

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INSTRUCTIONS–PARTS LIST

309016

This manual contains important warnings and information. READ AND KEEP FOR REFERENCE.

INSTRUCTIONS

Direct-Drive

AquaMaxt Pressure Washers

Model 804594, Series A

AquaMax DD6814 pressure washer with 5.5-hp engine

and 680 liters/hr (3 gpm) pump on Hi-Boy cart with hose, gun, and tips

140 bar, 14 MPa (2000 psi) Maximum Working Pressure

Model 804597, Series A

AquaMax DD9021 pressure washer with 11-hp engine

and 900 liters/hr (4 gpm) pump on Hi-Boy cart with hose, gun, and tips

210 bar, 21 MPa (3000 psi) Maximum Working Pressure

Rev. B

First choice when

quality counts.t

Model 804596, Series A

AquaMax DD9023 pressure washer with 13-hp engine

and 900 liters/hr (4 gpm) pump on Hi-Boy cart with hose, gun, and tips

230 bar, 23 MPa (3300 psi) Maximum Working Pressure

U.S. Patent Patented 1983, Canada and other patents pending

Related Manual

Spray Gun 308511. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Model 804597

9259A

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

Graco Inc. is registered to I.S. EN ISO 9001

Table of Contents

Warnings 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Pump Service

Model 804594 (DD6814) 12. . . . . . . . . . . . . . . . . . . . . .

Models 804596 (DD9023) & 804597 (DD9021) 14. . .

Parts Drawings and Lists

Model 804594 (DD6814) 16. . . . . . . . . . . . . . . . . . . . . .

Models 804596 (DD9023) & 804597 (DD9021) 18. . .

Pump Repair Kits 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Technical Data 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Warranty 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Graco Phone Number 22. . . . . . . . . . . . . . . . . . . . . . . . . .

WARNING

INJECTION HAZARD

Spray from the gun, leaks, or ruptured components can inject fluid into your body and cause serious injury. Fluid splashed in the eyes or on the skin can also cause serious injury.

D Fluid injected into the skin might look like just a cut, but it is a serious injury. Get emergency

medical attention.

Warning Symbol

WARNING

This symbol alerts you to the possibility of serious injury or death if you do not follow the instructions.

Caution Symbol

CAUTION

This symbol alerts you to the possibility of damage to or destruction of equipment if you do not follow the instructions.

D Do not point gun at anyone or at any part of body.

D Do not stop or deflect leaks with hand, body, glove, or rag.

D Do not put hand or fingers over spray tip.

D Tighten fluid connections before starting equipment.

D Engage the gun trigger safety whenever you stop spraying.

D Follow Pressure Relief Procedure on page 5 if spray tip clogs and before cleaning, checking, or

servicing equipment.

D Repair or replace worn or damaged parts immediately.

D Check hoses, tubes, and coupling daily. Do not repair high-pressure couplings: replace entire

hose. Fluid hoses must have spring guards on both ends to prevent kinks and rupture.

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WARNING

MOVING PARTS HAZARD

Moving parts, such as the drive belt, can pinch or amputate fingers.

D Keep clear of moving parts when starting or operating this equipment.

D Do not operate the pressure washer without all guards and interlocks installed and functioning.

HAZARDOUS FLUIDS

Improper handling of hazardous fluids can cause serious injury or death due to splashing in eyes, ingestion, or bodily contamination.

D Know specific hazards of fluid being used.

D Store hazardous fluids in approved containers. Dispose of hazardous fluids per local, state, and

national guidelines.

D Wear protective eyewear, gloves, clothing, and respirator as recommended by the fluid manufac-

turer.

FUEL HAZARD

The fuel used in this unit is combustible and when spilled on a hot surface can ignite and cause a fire. Do not fill the fuel tank while the engine is running or hot.

EXHAUST HAZARD

The exhaust contains poisonous carbon monoxide which is colorless and odorless. Do not operate this equipment in a closed building.

EQUIPMENT MISUSE HAZARD

Misuse of the pressure washer or accessories could cause them to rupture and result in fluid injection, splashing in the eyes or on the skin, or other serious injury.

D Do not alter or modify any part or factory-set adjustment of this equipment.

D Do not exceed the maximum working pressure of any component or accessory in the system.

D Do not use any chemicals that are incompatible with the wetted parts as stated in Technical Data

on page 21.

D Do not alter throttle setting.

3309016

pressure gauge

pump

Setup

spray

gun

hose rack

hose

3/4 in. garden

hose connection

for water inlet

Fig. 1

Check for Shipping Damage

Check the unit for any damage that could have occurred during shipping. Notify the carrier

immediately if there is any damage.

Setup

Connect the high-pressure hose between the pump outlet and the gun inlet. Both of these connections are made with quick couplers.

CAUTION

Up to 100 ft (30 m) of high-pressure hose may be used. Longer hoses might affect pressure washer performance and chemical injector performance.

Install the appropriate spray tip on the wand. See Installing and Changing Spray T ips on page 7. If you are using a sandblaster kit, see its separate manual for installation instructions.

high-pressure hose connection

9259A

Connect to Water Supply

CAUTION

Before you connect to the water supply, check your local plumbing code regarding cross-connection to the water supply. A backflow preventer, Part No. 801133, is available to prevent backflow of contaminated water into the fresh water supply. Install it upstream from the pump.

If inlet water pressure is over 414 kPa, 4.1 bar (60 psi), a regulating water valve, Part No. 800258, must be installed at the garden hose connection.

Do not exceed 70_ C (160_F) inlet water temperature.

Connect a hose with at least a 3/4 in. (19 mm) ID from the water supply to the unit’s 3/4 in. garden hose inlet. The supply hose should not be more than 50 ft (15 m) long.

NOTE: The water source at the unit must have a minimum flow rate equal to that of the unit. See Technical Data on page 21.

4 309016

Operation

Pressure Relief Procedure

WARNING

INJECTION HAZARD

The system pressure must be manually relieved to prevent the system from

starting or spraying accidentally. Fluid under high pressure can be injected through the skin and cause serious injury. To reduce the risk of an injury from injection, splashing fluid, or moving parts, follow the Pressure Relief Procedure whenever you

D Are instructed to relieve the pressure D Stop spraying for more than 10 minutes D Check or service any of the system equipment D Install or clean the spray nozzle

1. Engage the trigger safety latch.

2. Turn the engine off.

3. Pull the plug wire off the spark plug.

4. Shut off the water supply.

5. Disengage the trigger safety latch, and trigger the gun to relieve pressure. Then engage the trigger safety latch again.

If you suspect that the spray tip or hose is completely clogged or that pressure has not been fully relieved after following the steps above, disengage the trigger

safety latch, and trigger the gun to relieve pressure. Wrap a rag around the hose end coupling, and very slowly loosen the coupling to relieve pressure gradually, then loosen it completely, and clear the tip or hose.

Operating Cautions

Always observe the following CAUTIONS when operating the pressure washer to avoid costly damage to the pressure washer.

CAUTION

Do not allow the pressure washer to idle for more than 10 minutes. Doing so could cause the recirculating water to overheat and seriously damage the pump. Turn off the pressure washer if it will not be spraying for 10 minutes. If heated inlet water is used, reduce this time further . Do not operate the pressure washer with the inlet water screen removed; the screen helps keep abrasive sediment out of the pump, which could clog the pump or damage the cylinders. Keep the screen clean. Do not pump caustic materials through the pump; such materials could corrode the pump components. However, it is safe to pump antifreeze through the pump for cold-weather transport and storage.

Trigger Safety Latch

WARNING

To reduce the risk of serious bodily injury, including fluid injection and splashing in the eyes or on the skin, always engage the trigger safety latch when you stop spraying, even for a moment. In the engaged position, the trigger safety latch prevents the gun from being triggered accidentally by hand or if it is dropped or bumped. Be sure the latch is pushed fully down to prevent the gun from being triggered. See Fig. 2.

WARNING

PRESSURE INDICATED ON GAUGE

The pressure gauge (shown in Fig. 1) indicates the spraying pressure when the gun is triggered and the bypass pressure when the gun is not triggered. Pressure at the gun may be significantly higher than the bypass pressure indicated on the pressure gauge. Therefore, always follow the Pressure Relief Procedure above regardless of the pressure indicated on the gauge.

trigger safety engaged

Fig. 2

trigger safety disengaged

04612

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Operation

Startup

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

1. Check the oil levels.

NOTE: All units are 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 the oil and the fuel levels. Check the oil level each time the unit is refueled.

WARNING

FIRE HAZARD

Do not refuel a hot engine. Refueling a

hot engine could cause a fire. Use only fresh and clean regular or unleaded gasoline. Close the fuel shutoff valve when refueling.

2. Check the fuel level.

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.

6. Pull the starter rope to start the engine. Brace one foot on the pressure washer cart, and pull the starter rope out quickly. Pull and return the rope until the engine starts.

CAUTION

Do not allow the starter rope to snap back against the engine. Return it gently to prevent damage to the recoil mechanism.

NOTE: For easier starting, have one person start the engine while another person triggers the spray gun.

If the engine is cold, start the engine with the choke completely closed. In cool weather, you might have to let the engine run with the choke closed for the first 20 to 30 seconds, then open it completely. In warm weather, open the choke completely as soon as the engine starts.

If the engine is warm, start the engine with the choke completely open or partially closed. When the engine starts, open the choke completely.

Chemical Injector Operation

NOTE: See manual 308513 for detailed chemical

injector operation and service instructions.

3. Turn on the water supply.

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 cable is pushed firmly onto the spark plug. Put the switch in the ON position, and put the throttle in the RUN position.

2. Insert the chemical filter (attached with clear tubing to the chemical injector) into the container of chemical.

3. Install the black, large-orifice chemical tip (see Installing and Changing Spray T ips on page 7).

The large orifice of the chemical injector tip causes a drop in pressure that actuates the chemical injector. Changing back to a small diameter spray tip deactivates the chemical injector and produces high pressure for rinsing. The chemical filter can be left in the chemical container during high-pressure use. To regulate the flow rate of the chemical, turn the chemical adjustment knob on the injector. Maximum chemical flow is two full

turns counterclockwise from the closed (clockwise)

position.

Relieve the pressure.

See page 5.

6 309016

Operation

Installing and Changing Spray Tips

Tips are stored in storage holes on the cart of the pressure washer.

WARNING

To reduce the risk of serious bodily injury, including fluid injection and splashing in the eyes or on the skin, use extreme caution when changing spray tips. Always follow the procedure below.

2. Select a spray tip appropriate for your application. Spray tips are stamped with 4- or 5-digit numbers. The first two digits denote the spray angle. The following table lists the spray tips.

NOTE: The chemical injector tip is brass and has a large opening and a black plastic cap.

Spray Tip Number Spray Pattern Fan Angle

00XXX 0_ blaster (red)

15XXX 15_ (yellow)

25XXX 25_ (green)

40XXX 40_ (white)

Relieve the pressure.

See page 5.

5. Pull on the tip to be sure the tip is secure before you spray again.

CAUTION

To avoid blowing the O-ring out of the quick coupler due to the high pressure in the system, never operate the pressure washer without a tip securely mounted in the quick coupler.

NOTE: See the sandblaster kit manual for detailed cleaning information if this accessory is used.

Shutdown, Flushing, and Storage

Antifreeze Flush Kit 802327 is available to make flushing easier. This kit is for flushing the system with 50% antifreeze solution prior to transporting or storing the pressure washer in below-freezing temperatures.

CAUTION

If water does freeze in the pressure washer, thaw it in a warm room before trying to start it. Do not pour hot water on or into the pump; it could crack the ceramic plungers.

For Pressure Relief, see page 5.

3. Point the gun and wand away from yourself and anyone else.

4. Without holding your hand over the spray tip (A), pull back the quick coupler ring (B). Remove the current tip, install a different one, and push back the ring. See Fig. 3.

Fig. 3

04929

D If the pressure washer will be exposed to freezing

temperatures, flush the unit with a 50% antifreeze solution. Relieve the pressure and flush the pressure washer before you use it again to remove the antifreeze.

D Before long-term (overnight) storage or transporting

of unit, disconnect the water supply and turn off the fuel supply valve.

D After each use, wipe all surfaces of the pressure

washer with a clean, damp cloth.

D Perform the appropriate maintenance. See

Maintenance chart on page 9.

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Notes

8 309016

Maintenance

Observe regular maintenance intervals to ensure that you get maximum performance and life from the pressure washer.

There is a break-in period for the engine and pump. After you change the oil in these components following their break-in periods, the interval between required maintenance procedures is longer.

If operating the unit in dusty conditions, you should perform these maintenance procedures more often.

Always relieve the pressure before you begin.

For Pressure Relief, see page 5.

Interval Maintenance

Daily Clean water inlet screen and filter.

Check engine and pump oil levels. Fill as necessary. Check gasoline level. Fill as necessary.

After first 5 hours of operation

After first 25 hours of operation

Every 25 hours of operation

After first 50 hours of operation

Change engine break-in oil. Drain oil when warm. Use SAE 30 or 10W–30 detergent oil.

Retorque exhaust manifold nuts to 27 N-m (20 ft-lb). Do not over tighten.

Clean and remove air cleaner foam. Wash with water and detergent. Dry thoroughly. Rub with oil, and squeeze to distribute oil.

Change pump break-in oil. Use SAE 20 or 30 non-detergent oil.

Every 100 hours of operation or every 3 months

Every 500 hours of operation or every 6 months

Clean or replace paper air cleaner cartridge. Tap gently to remove dirt. Change engine oil. Use SAE 30 or 10W–30 detergent oil.

Retorque exhaust manifold nuts to 27 N-m (20 ft-lb). Do not over tighten.

Change pump oil. Use SAE 20 or 30 non-detergent oil.

9309016

Troubleshooting

WARNING

To reduce the risk of serious injury, including fluid injection and splashing in the eyes or on the skin, always follow Pressure Relief Procedure on page 5 before you proceed.

Problem Cause Solution

Engine does not start or is hard to start

No gasoline in fuel tank or carburetor Fill the tank with gasoline, and open fuel shutoff valve.

Check fuel line and carburetor.

Low oil Add to proper level.

Start/Stop switch in Stop position Move switch to Start position.

Water in gasoline or fuel is old Drain fuel tank and carburetor. Use new fuel and dry

spark plug.

Choked improperly, engine flooded Open choke, and cycle engine several times to clear

out gas. Use a dry spark plug.

Dirty air cleaner filter Remove and clean.

Engine misses or lacks power

Low pressure and/or pump runs rough

Spark plug dirty, wrong gap, or wrong plug type

Spray gun closed Trigger spray gun while starting.

Partially plugged air cleaner filter Remove and clean.

Spark plug dirty, wrong gap, or wrong plug type

Worn or wrong size tip Replace with tip of proper size.

Inlet filter clogged Clean. Check more frequently.

Worn packings, abrasives in water, or natural wear

Inadequate water supply Check water flow rate to pump.

Fouled or dirty inlet or discharge valves Clean inlet and discharge valve assemblies. Check

Restricted inlet Check garden hose; it might be collapsed or kinked.

Worn inlet or discharge valves Replace worn valves. See Pump Service on page

Leaking high-pressure hose Replace high-pressure hose.

Clean, adjust spark plug gap, or replace.

Check filter. Replace packings. See Pump Service on page 12 or 14.

filter.

12 or 14.

Water leaking from under pump manifold

10 309016

Worn packings Install new packings. See Pump Service on page

12 or 14.

Troubleshooting

Problem Cause Solution

Water on oil side of pump

Frequent or premature failure of packings

Humid air condensing inside crankcase Change oil as specified in Maintenance on page 9.

Worn packings Install new packings. See Pump Service on page

12 or 14.

Oil seals leaking Install new oil seals. See Pump Service on page

12 or 14.

Scored, damaged, or worn plungers Install new plungers. See Pump Service on page

12 or 14.

Abrasive material in the fluid being pumped

Inlet water temperature too high Check water temperature; may not exceed 70_ C

Over pressurizing pump Do not modify any factory-set adjustments. See

Excessive pressure due to partially plugged or damaged tip

Pump running too long without spraying Never run pump more than 10 minutes without

Running pump dry Do not run pump without water.

Install proper filtration on pump inlet plumbing.

(160_ F).

Equipment Misuse Hazard on page 3.

Clean or replace tip. See Installing and Changing Spray Tips on page 7.

spraying.

Strong surging at inlet, and low pressure on discharge side

Foreign particles in the inlet or discharge valve or worn inlet and/or discharge valves

Clean or replace valves. See Pump Service on page 12 or 14.

11309016

Pump Service — Model 804594

AquaMax DD6814

Always relieve the pressure before you begin.

For Pressure Relief, see page 5.

NOTES:

D The following metric wrenches are needed: 5 mm,

13 mm, and 22 mm.

D There is a tool kit to aid in servicing the pump:

Tool Kit 800271 includes tools to aid in removing packing retainers.

D Repair kits are available. See the individual repair

sections in this manual, and see the instructions that come with the kits for location of parts. For the best results, use all parts in the kits.

Valves

NOTE: For a set of six valves, order 801472. See Pump Repair Kits on page 20.

1. Remove the hex plug from the manifold using a 22 mm socket.

2. Examine the O-ring under the hex plug, and replace if cut or distorted.

3. Remove the valve assembly from the cavity; the assembly can come apart.

Servicing the Plungers

NOTE: Plunger Repair Kits are available for replacing

retainers, O-rings, washers, and backup rings for three cylinders. See Pump Repair Kits on page 20.

1. Loosen the plunger retaining nut five to six turns, using a 13 mm wrench. Push the plunger toward the crankcase to separate the plunger and retaining screw.

2. Remove the nut from the plunger, and examine the O-ring, backup ring, and copper bearing/gasket washer. Replace these parts, if necessary, using parts from Plunger Repair Kit 801474.

3. Remove the plunger and flinger from the plunger shaft. Clean, examine, and replace parts as necessary.

4. Inspect the plunger shaft for oil leakage from the crankcase. If leaking is obvious, replace the oil seals. If leaking is very minor, do not remove the seals, because they cannot be reused. Oil Seal Kits are available to replace the seals. See Pump Repair Kits on page 20.

5. Lightly grease the flinger and oil seal if they are being replaced, and put them on the plunger shaft. Then install the plunger.

4. Install the new valve. Install the O-ring and hex plug, and torque to 45 N-m (33 ft-lb).

NOTE: Retorque the plug after 5 hours of operation.

Pumping Section

1. Remove the eight capscrews and lockwashers from the manifold using a 5 mm wrench.

2. Carefully separate the manifold from the crankcase.

NOTE: You might have to tap the manifold lightly with a soft mallet to loosen it.

CAUTION

Keep the manifold properly aligned with the ceramic plungers when removing to avoid damage to the plunger or seals.

3. Carefully examine each plunger for any scoring or cracking, and replace as necessary.

12 309016

Pump Service — Model 804594

AquaMax DD6814

6. Lightly grease the retaining screw and the outer end of the plunger. Place the washer, O-ring, and backup ring around the screw, and install the nut through the plunger. Torque to 15 N-m (11 ft-lb).

7. If you plan to replace the packings, see Servicing the V-Packings at right.

8. Lubricate the outside of each plunger. Slide the manifold onto the crankcase, being careful not to damage the seals.

9. Install the capscrews and washers fingertight. Torque the screws to 12 N-m (8.8 ft-lb) following the tightening pattern shown in Fig. 4. Uneven tightening could cause the manifold to bind or jam.

Servicing the V-Packings

There are two types of packing kits: one is packings only, the other includes the packings, rings and retainers. See Pump Repair Kits on page 20.

1. Remove the manifold as outlined in Pumping Section on page 12.

2. Carefully pull the packing retainer from the manifold. Examine the O-ring, and replace if cut or damaged.

3. Remove the v-packing and head ring. Pull out the intermediate retainer ring. Remove the second v-packing and second head ring.

4. Inspect all parts, and replace as necessary.

5. Thoroughly clean the packing cavities, and examine for debris or damage.

6. Lightly grease the packing cavities, and replace the packings in the following order: head ring, v-packing, intermediate ring, head ring, v-packing, and packing retainer with the O-ring installed in the retainer groove.

Fig. 4

9292A

CAUTION

Install the parts in the proper order and facing the correct direction. Improperly installed parts will cause a malfunction.

7. Reassemble the manifold as instructed in Servicing the Plungers on page 12.

13309016

Pump Service — Models 804596 & 804597

AquaMax DD9023 & DD9021

Always relieve the pressure before you begin.

For Pressure Relief, see page 5.

NOTES:

D The following metric wrenches are needed: 6 mm,

13 mm, and 27 mm.

D There is a tool kit to aid in servicing the pump:

Tool Kit 800271 includes tools to aid in removing packing retainers.

D Repair kits are available. See the individual repair

sections in this manual, and see the instructions that come with the kits for location of parts. For the best results, use all parts in the kits.

Valves

NOTE: For a set of six valves, order 801472. See Pump Repair Kits on page 20.

1. Remove the hex plug from the manifold using a 27 mm socket.

2. Examine the O-ring under the hex plug, and replace if cut or distorted.

3. Remove the valve assembly from the cavity; the assembly can come apart.

Servicing the Plungers

NOTE: Plunger Repair Kits are available for replacing

retainers, O-rings, washers, and backup rings for three cylinders. See Pump Repair Kits on page 20.

1. Loosen the plunger retaining nut five to six turns, using a 13 mm wrench. Push the plunger toward the crankcase to separate the plunger and retaining screw.

2. Remove the nut from the plunger, and examine the O-ring, backup ring, and copper bearing/gasket washer. Replace these parts, if necessary, using parts from appropriate Plunger Repair Kit listed on page 20.

3. Remove the plunger and flinger from the plunger shaft. Clean, examine, and replace parts as necessary.

5. Lightly grease the flinger and oil seal, if it is being replaced and, replace them on the plunger shaft. Then install the plunger.

4. Install the new valve. Install the O-ring and hex plug, and torque to 99 N-m (73 ft-lb).

NOTE: Retorque the plug after 5 hours of operation.

Pumping Section

1. Remove the eight capscrews and lockwashers from the manifold using a 6 mm wrench.

2. Carefully separate the manifold from the crankcase.

NOTE: You might have to tap the manifold lightly with a soft mallet to loosen.

CAUTION

Keep the manifold properly aligned with the ceramic plungers when removing to avoid damage to the plunger or seals.

3. Carefully examine each plunger for any scoring or cracking, and replace as necessary.

14 309016

Pump Service — Models 804596 & 804597

AquaMax DD9023 & DD9021

7. If you plan to replace the packings, see Servicing the V-Packings at right.

8. Lubricate the outside of each plunger. Slide the manifold onto the crankcase, being careful not to damage the seals.

9. Install the capscrews and washers fingertight. Torque the screws to 30 N-m (22 ft-lb) following the tightening pattern shown in Fig. 4. Uneven tightening could cause the manifold to bind or jam.

Servicing the V-Packings

There are two types of packing kits: one is packings only, the other includes the packings, rings, and retainers. See Pump Repair Kits on page 20.

1. Remove the manifold as outlined in Pumping Section on page 14.

2. Carefully pull the packing retainer from the manifold. Examine the O-ring, and replace if cut or damaged.

3. Remove the v-packing and head ring. Pull out the intermediate retainer ring. Remove the second v-packing and second head ring.

4. Inspect all parts, and replace as necessary.

5. Thoroughly clean the packing cavities, and examine for debris or damage.

Fig. 4

9292A

CAUTION

Install the parts in the proper order and facing the correct direction. Improperly installed parts will cause a malfunction.

7. Reassemble the manifold as instructed in Servicing the Plungers on page 14.

15309016

Parts — Model 804594

AquaMax DD6814

1 Apply sealant to threads

2 Supplied with pump

3 All parts supplied with unloader

4 Shaft key supplied with engine

Detail 1

See Detail 1

16 309016

3 Ref18 19

9260A

Parts — Model 804594

AquaMax DD6814

USE ONLY GENUINE GRACO PARTS AND ACCESSORIES

Ref. No. Part No. Description Qty.

1 802264 ENGINE, Hondat OHV; 5.5 hp 1 2 804531 PUMP ASSEMBLY 1 3 240998 FRAME, cart 1 4 239998 HANDLE, cart 1 5 191084 SLEEVE, cart 2 6 183350 WASHER 2 7 110243 RING, retaining 2 8 115481 FOOT, cart 2 9 112827 BUTTON, snap 2 10 179811 WHEEL, semi-pneumatic 2 11 154636 WASHER 2 12 101242 RING, retaining, ext 2 13 104811 CAP, hub 2 14 110837 SCREW, flange, hex hd; 5/16 in. 4 15 111040 NUT, lock, nylock; 5/16–18 in. 4 16 108795 SCREW, mach, pan hd 4 17 801012 GROMMET, rubber 6 18 805543 TIP, spray, Q-type;

0004 (0_ – red) 1

805544 TIP, spray, Q-type;

1504 (15_ – yellow) 1

805545 TIP, spray, Q-type;

2504 (25_ – green) 1

805546 TIP, spray, Q-type;

4004 (40_ – white) 1

19 805634 TIP, spray, chemical injector, (black) 1

Ref. No. Part No. Description Qty.

23 114801 HOOK, pail 1 24 112380 SCREW, mach, fil hd; 1/2 in. 2 25 109466 LOCKNUT 2 26 804381 GUN & WAND ASSEMBLY

See instruction manual 308511 1

27 804479 HOSE, high pressure;

3/8 x 50 ft (15 m) 1 28 801569 QUICK COUPLER, female; 3/8 1 29 801568 QUICK COUPLER, 3/8; male 1 30 801683 STRAINER, chemical 1 31 194188 TUBING, chemical 1 39Y290013 LABEL, danger 1 40Y290131 LABEL, warning 1 41Y290133 LABEL, “Prevent Freezing” 1 43 195405 LABEL, identification 2 47 804543 KIT, unloader/injector 1 48 800742 VALVE, thermal relief 1 49 804546 VALVE, relief 1 50 804593 ADAPTER, pressure gauge 1 51 804582 GAUGE, pressure 1 52 115496 SCREW, thread forming, panhead 2 53 244350 KIT, repair, chemical injector 1

Y Extra danger and warning labels are available free

of charge.

17309016

Parts — Models 804596 & 804597

AquaMax DD9023 & DD9021

1 Apply sealant to threads

All parts supplied with unloader

3 Supplied with pump

Detail 1

See Detail 1

18 309016

3 Ref

9261A

Parts — Models 804596 & 804597

AquaMax DD9023 & DD9021

USE ONLY GENUINE GRACO PARTS AND ACCESSORIES

Ref. No. Part No. Description Qty.

1 ENGINE 1

114703 Model 804596: Hondat OHV; 13 hp 1

803158 Model 804597: Hondat OHV; 11 hp 1 2 PUMP ASSEMBLY 1

114707 Model 804596 1

804503 Model 804597 1 3 240998 FRAME, cart 1 4 239998 HANDLE, cart 1 5 191084 SLEEVE, cart 2 6 183350 WASHER 2 7 110243 RING, retaining 2 8 115481 FOOT, cart 2 9 112827 BUTTON, snap 2 10 179811 WHEEL, semi-pneumatic 2 11 154636 WASHER 2 12 101242 RING, retaining, ext 2 13 104811 CAP, hub 2 14 110837 SCREW, flange, hex hd; 5/16 in. 4 15 111040 NUT, lock, nylock; 5/16–18 in. 4 16 108795 SCREW, mach, pan hd 6 17 801012 GROMMET, rubber 6 18 TIP, spray, Q-type; 0_ – red

805543 Model 804596: 0004 1

805547 Model 804597: 00045 1

TIP, spray, Q-type; 15_ – yellow

805544 Model 804596: 1504 1

805548 Model 804597: 15045 1

TIP, spray, Q-type; 25_ – green

805545 Model 804596: 2504 1

805549 Model 804597: 25045 1

TIP, spray, Q-type; 40_ – white

805546 Model 804596: 4004 1

805550 Model 804597: 40045 1 19 805634 TIP, spray, chemical injector, (black) 1

Ref. No. Part No. Description Qty.

23 114801 HOOK, pail 1 24 112380 SCREW, mach, fil hd; 1/2 in. 2 25 109466 LOCKNUT 2 26 804381 GUN & WAND ASSEMBLY

See instruction manual 308511 1

27 804474 HOSE, high pressure;

195406 Model 804596 2 195407 Model 804597 2

47 KIT, unloader/injector 1

114706 Model 804596 1

804528 Model 804597 1 48 804397 VALVE, thermal relief 1 49 VALVE, relief 1

114705 Model 804596 1

804547 Model 804597 1 50 801137 KEY, shaft 1 51 804595 ADAPTER, pressure gauge 1 52 804582 GAUGE, pressure 1 53 115496 SCREW, thread forming, panhead 2 54 244350 KIT, repair, chemical injector 1

Y Extra danger and warning labels are available free

of charge.

19309016

Pressure Washer Model 804594

804033

Oil seal

Repair Kit

Pressure Washer Model 804596

801658

Oil seal

Pump Repair Kits

Pressure Washer Models 804596 and 804597

801658

Oil seal

Description Qty.

Oil seal 3

Parts for

Entire Pump

Parts for

One

Cylinder

801472

Valve assembly

804034

Valve cap

804036

Packing assembly

801474

Plunger assembly

804402

Valve assembly

804403

Valve cap

114793

Packing assembly

241325

Plunger assembly

804402

Valve assembly

804403

Valve cap

804404

Packing assembly

801474

Plunger assembly

O-ring Valve seat Valve Spring Valve cage

O-ring Cap

O-ring Packing retainer Intermediate ring Packing Packing Head ring

Washer O-ring Back up Retaining screw Flinger

6 6 6 6 6

6 6

1 1 1 1 2 2

3 3 3 3 3

20 309016

Technical Data

PTFE

Model 804594

(AquaMax DD6814)

Engine (4 cycle, air cooled)

Gasoline tank capacity 3.6 L (3.8 quarts) 6.5 L (6.9 quarts) 6.5 L (6.9 quarts)

Water pump maximum working pressure 140 bar, 14 MPa

Water pump maximum flow 680 liters/hr (3 gpm) 900 liters/hr (4 gpm) 900 liters/hr (4 gpm)

Inlet hose connection 3/4-in. garden hose (f) 3/4-in. garden hose (f) 3/4-in. garden hose (f)

Weight (without gun and hose) 47 kg (103 lb) 69 kg (151 lb) 69 kg (151 lb)

Dimensions

Length

Width

Height

Maximum inlet water temperature 70_ C (160_ F) 70_ C (160_ F) 70_ C (160_ F)

Sound data (measured per ISO 3744)

Sound pressure level Sound power level

Wetted parts

High-pressure hose

Pressure washer (including fittings)

5.5-hp Hondat OHV 13-hp Hondat OHV 11-hp Hondat OHV

(2000 psi)

927 mm (36.5 in.)

533 mm (22 in.)

788 mm (31.5 in.)

93.1 dB(A)

103.5 dB(A)

acrylonitrile and Buna-N cover and tube

anodized aluminum; aluminum or bronze alloys; brass copper; Nylon- r composite; ceramic; Buna-N; cotton phenolic; 303, 304, and 316 stainless steel; polymide–12 thermoplastic; r; carbon steel; zinc with or without yellow chromate plate

Model 804596

(AquaMax DD9023)

230 bar, 23 MPa (3300 psi)

927 mm (36.5 in.)

533 mm (22 in.)

813 mm (32.5 in.)

97.4 dB(A)

111.6 dB(A)

Model 804597

(AquaMax DD9021)

210 bar, 21 MPa (3000 psi)

927 mm (36.5 in.)

533 mm (22 in.)

813 mm (32.5 in.)

95.8 dB(A)

106.3 dB(A)

t is a trademark of the Honda Corporation.

Honda

21309016

Graco Warranty

Graco warrants all equipment manufactured by Graco and bearing its name to be free from defects in material and workmanship on the date of sale by an authorized Graco distributor to the original purchaser for use. With the exception of any special, extended, or limited warranty published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy (including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

Graco makes no warranty, and disclaims all implied warranties of merchantability and fitness for a particular purpose in connection with accessories, equipment, materials or components sold but not manufactured by Graco. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into, given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parti es reconnaissent avoir convenu que la rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés à la suite de ou en rapport, directement ou indirectement, avec les procedures concernées.

ADDITIONAL WARRANTY COVERAGE

Graco does provide extended warranty and wear warranty for products described in the “Graco Contractor Equipment W arranty Program”.

Graco Phone Number

TO PLACE AN ORDER, contact your Graco distributor, or call this number to identify the distributor closest to you:

1–800–690–2894 Toll Free

All written and visual data contained in this document reflect the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

22 309016

International Offices: Belgium, Korea, Hong Kong, Japan

Sales Offices: Minneapolis, Detroit

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440–1441

www.graco.com

PRINTED IN USA 309016 June 1999, Revised October 2000

Graco AquaMax 804594 A Series, AquaMax 804596 A Series, AquaMax 804597 A Series, AquaMax DD6814, AquaMax DD9023 Instructions-parts List Manual

Specifications and Main Features

Frequently Asked Questions

User Manual