Hitachi 309379 warranty Maintenance, Pressure Relief Procedure, Injection Hazard, Semi-Annually

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Maintenance

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:

Dare instructed to relieve the pressure,

Dstop spraying,

Dcheck or service any of the system equipment,

Dor install or clean the spray tip.

Pressure Relief Procedure

1.Lock gun trigger safety.

2.Turn engine ON/OFF switch to OFF.

3.Move pump switch to OFF and turn pressure control knob fully counterclockwise.

4.Unlock trigger safety. Hold metal part of gun firmly to side of grounded metal pail, and trigger gun to relieve pressure.

5.Lock gun trigger safety.

6.Open pressure drain valve. Leave valve open until ready to spray 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, VERY SLOWLY loosen tip guard retaining nut or hose end coupling to relieve pressure gradually, then loosen completely. Now clear tip or hose.

CAUTION

For detailed engine maintenance and specifications, refer to separate Honda Engines Owner’s Manual, supplied.

DAILY: Check engine oil level and fill as necessary.

DAILY: Check hydraulic oil level and fill as neces- sary.

DAILY: Check hose for wear and damage.

DAILY: Check gun safety for proper operation.

DAILY: Check pressure drain valve for proper opera- tion.

DAILY: Check and fill the gas tank.

DAILY: Check that displacement pump is tight.

DAILY: Check level of TSL in displacement pump packing nut. Fill nut, if necessary. Keep TSL in nut to help prevent fluid buildup on piston rod and premature wear of packings and pump corrosion.

AFTER THE FIRST 20 HOURS OF OPERATION: Drain engine oil and refill with clean oil. Reference Honda Engines Owner’s Manual for correct oil viscos- ity.

WEEKLY: Remove engine air filter cover and clean element. Replace element, if necessary. If operating in an unusually dusty environment: check filter daily and replace, if necessary.

Replacement elements can be purchased from your local HONDA dealer.

WEEKLY/DAILY: Remove any debris or media from hydraulic rod.

AFTER EACH 100 HOURS OF OPERATION: Change engine oil. Reference Honda Engines Owner’s Manual for correct oil viscosity.

SEMI-ANNUALLY:

Check belt tension, page 8; adjust if necessary.

YEARLY OR 2000 HOURS:

Replace hydraulic oil and filter element with Graco hydraulic oil 169236 (5 gallon/20 liter) or 207428 (1 gallon/3.8 liter) and filter element 244990; page 6.

SPARK PLUG: Use only BPR6ES (NGK) or W20EPR–U (NIPPONDENSO) plug. Gap plug to 0.028 to 0.031 in. (0.7 to 0.8 mm). Use spark plug wrench when installing and removing plug.

4309379

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Contents Repair Parts Table of Contents309379 HydraMaxr SprayersAdvertência 309379General Repair Information GroundingMoving Parts Hazard HOT Surfaces Hazard Explosion HazardMaintenance Pressure Relief ProcedureInjection Hazard SEMI-ANNUALLYTroubleshooting Hydraulic Pump InstallationRemoval 141 Bottom View 6425 133 Engine mounting Fasteners 136 139 Removal Installation Fan BeltInstallation Pressure ControlDisplay and Control Board RemovalGeneral OperationAfter a fault, follow these steps to restart sprayer DTS Error CodesDisplay Sprayer Indication Action Operation Engine Do Fan Belt, InstallationRemoval Do Fan Belt, Removal Hydraulic Motor Top Green RedHydraulic Motor Switches Directional Valve RemovalDisplacement Pump Push retaining spring up push out pinParts Drawing HydraMax 225 Sprayers Parts List HydraMax 225 Sprayers Models 233640163 153 164 154 Spring FittingRing Spring Holder106 Plug Parts Drawing HydraMax 300/350 Sprayers Parts List HydraMax 300/350 Sprayers Model 233650Ti1390c Shield Ti1391a † Include in Hydraulic Seal Repair Kit Wiring Diagram Parts Drawing HydraMax 225/300/350 SprayersParts List HydraMax 225/300/350 Sprayers HydraMax Sprayers with Spray Gun and Hoses HydraMax 225, 300 and 350 SprayersModels 233642, 233643, 233651 Spray GUNTechnical Data DimensionsGraco Phone Number Accessories GRACO-APPROVED Hydraulic OILAdditional Warranty Coverage Graco WarrantyFor Graco Canada Customers