Hitachi 4043 important safety instructions Operation, Pressure Relief Procedure, Startup

Operation

Pressure Relief Procedure

WARNING

INJECTION HAZARD

System pressure must be manually relieved to prevent system from starting or spraying accidentally. Fluid under high

pressure can be injected through skin and cause serious injury. To reduce risk of injury from injec- tion, splashing fluid, or moving parts, follow Pres- sure Relief Procedure whenever you:

Dare instructed to relieve pressure,

Dstop spraying for more than 10 minutes,

Dcheck or service system equipment,

Dinstall or clean spray nozzle.

1.Engage trigger safety latch.

2.Turn sprayer off.

3.Remove ignition cable from spark plug.

4.Remove siphon tube from water supply.

5.Disengage trigger safety latch and trigger gun to relieve pressure. Engage trigger safety latch.

6.If spray tip or hose is completely clogged, or pressure has not been fully relieved after following steps above: Disengage trigger safety latch and trigger gun to relieve pressure. Wrap rag around hose end coupling and VERY SLOWLY loosen coupling to relieve pressure gradually, then loosen completely. Now clear tip or hose.

Startup

1.Check oil levels.

D Engine: Add SAE 30 or 10W–30 weight deter- gent oil as necessary.

DPump: Add SAE 20 or 30 weight non–deterg- ent oil.

6308532

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

FIRE HAZARD

Do not refuel a hot engine. Refueling a hot engine could cause a fire. Use only fresh, clean regular or unleaded gaso-

line. Close fuel shutoff valve during refueling.

3. Turn on the water supply.

CAUTION

Never run unit dry. Costly damage to pump will result. Always be sure water supply is sufficient 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.