f.After the engine is warm, gradually open the choke lever and close the bypase valve. See Fig 8 and 9.
NOTE: In cold weather, run the engine for about 15 minutes with the bypass valve open before starting the displacement pump to help avoid hydraulic motor stalling.
g.Follow the Pressure Relief Procedure Warn- Ing, on page 8, to shut off the sprayer.
To stop the engine in an emergency, depress the engine STOP button. Close the bypass valve if possible. See Fig 8. Then relieve the fluid pressure in the pump and hose as instructed in the Pres- sure Relief Procedure Warning, on page 8.
3.Prime the Pump
a.Be sure the gun safety latch is engaged.
b.Don'tinstall the spray tip yeti
c.If the engine has not been started, follow the procedure in Step 2, page 8.
d.Disengage the gun safety latch.
e.Point the gun into a metal pail and hold a metal part of the gun firmly against the pail. See Fig 10.
f.Squeeze the trigger and slowly turn the pressure control knob clockwise just enough to start the pump. See Fig 8.
g.Operate the pump until all air is purged from the pump and hoses and fluid is flowing freely from the gun.
h.Release the trigger and engage the gun safety latch.
LTurn the pressure control knob counterclock- wise until all spring tension is relieved. You will be able to feel it. The sprayer is now set at the lowest pressure setting. Turning the knob fur- ther will cause it to fall off.
j.Follow the Pressure Relief Procedure Warn- ing on page 8. Then install the spray tip in the gun as instructed in your separate gun or nozzle instruction manual.
DO NOT move the sprayer while the engine is operating. Tilting the sprayer during operation will cause lubrication problems.
MAINTAIN FIRM
METAL TO METAL
CONTACT WHEN
FLUSHING
Fig 10_________________
4.Adjusting the Pressure
a.Turn the pressure control knob clockwise to in- crease and counterclockwise to decrease pressure. Tighten the knob locknut to set.
b.Always use the lowest pressure necessary to completely atomize the fluid.
Operating the sprayer at a higher pressure than needed wastes fluid, causes early tip wear, and shortens sprayer life.
c.If more coverage is needed, use a larger tip rather than increasing the pressure.
d.Check the spray pattern. The tip size and angle determine the pattern width and flow rate. Refer to the separate instruction manual receiv- ed with your gun.
The engine throttle has been set and locked at 2800 RPM. The sprayer warranty will be voided and the hydraulic pump life shortened if this ad- justment is changed.
5.Cleaning a Clogged Tip
To reduce the risk of a fluid injection injury, NEVER hold your hand, body, or rag in front of the spray tip when cleaning or checking for a cleared tip. Always point the gun toward the ground or into a waste container when checking to see if the tip was cleared or when using a self- clearing tip.
a.Follow the Pressure Relief Procedure Warn- ing on page 8.
b.Clean the front of the tip frequently during the day to keep fluid from building up and clogging the tip. To clean, and to clear a tip if it clogs while spraying, refer to your separate gun or nozzle instruction manual for the proper pro- cedure.
6.When Shutting Off the Sprayer
a.Whenever you stop spraying, even for a short ( break, follow the Pressure Relief Procedure
Warning on page 8.
b.Clean the tip and gun as recommended by your separate gun instruction manual.
c.Flush the sprayer at the end of each work day if the fluid you are spraying is
d.For long term shutdown or storage, always fill the sprayer with mineral spirits to prevent pump corrosion. Be sure to relieve pressure in the pump after filling it with mineral spirits/
