Graco Inc 1007, 307-308, 226-813 manual Troubleshooting

Lubrication

Change the engine oil after every50 hours of operation. Grease the pump's front bearing and main bearing after every EO hours of operation. Removeexcessgrease from the front bearing cavity. Replace the pump front cover before starting the engine.

Lubricate the gear reduction unit regularly: change the oil every 500 hours, but sooner if oilbecomes dirty; The enginemanufacturerrecommendsusing"ForService SD or S E ' S.A.E.30 oilfor spring,summer, orfall operation, and S.A.E. 20 for winter operation.

Drain oil with engine warm. Place pan under reduction unit and loosen cover.

NOTE: Oncea year, removeenginecover com- pletely and flush out inside of housing with kerosene. DO NOT use gasoline for cleaning.

Remove filler andlevel plugs. Pour oilthrough vent hole of filler plug until it runs out through level hole. About 3/8 pint ( 1 7 7 cc) is required. Replace oil level plug and vented filler plug.

When changing engine crankcase oil, check reduction

unit and add oil if necessary to maintain proper level.

NOTE: Ventedfillerplugshouldberemoved periodicallyandventholethoroughly

cleaned. Ventilationis necessaryto eliminate

pressurebuild-upcausingoil leaks, and to preventcondensation fromforminginthe housing.

Followthe maintenanceprocedures forthe engine outlined in the accompanymg instructions.

The accumulator (EO) which acts as a buffer to smooth

pump strokes, isnitrogen. chargedandmust be re- charged generally every 6 to 12 months to 540-660psi

(37-45bar).Contactalocal fire extinguisherservlce location for recharging.

Never removestemvalve from accumulator,or check its pressure wlth astandard tire pressure

Never try to recharge accumulator with ordinary car service station equipment.

TROUBLESHOOTING

Engine Will Not Start Or Hard To Start

IEngine Misses Or Lacks Power

I

ExcessiveMachineWornshaft

Vibration

Excessive Vibration Of

Hose

Decrease Delivery

Accompanied By Rough

Operation

No gasoline in fuel tank or carburetor.

Water in gasoline or old fuel.

Choked improperly. Flooded engine.

Dirty carburetor air filter.

Spark plug dirty or improper gap.

Spray valve closed.

Partially plugged air cleaner.

Low oil level or dirty oil.

Spark plug dirty, wrong gap, or wrong type.

Incorrect ignition timing.

.

couplers.

Loss of dampener charge.

Damaged pulsation dampener bladder.

Air entering suction piping;

Air leaking past piston cups;

Pump valve malfunction:

Plugged or restricted pump suction passages:

Fill the tankwith gasoline, open fuel shut-off valve. Check fuel line and carburetor.

Drain fuel tank and carburetor. Use new fuel and dry spark plug.

Push in choke,open throttlecontroland crank engine several times to clear out the gas.

Remove and clean.

Clean, adjust the gap or replace.

Open valve.

Remove and clean.

Check or change oil.

Clean, adjust the gap, or replace.

Time engine.

Replace couplers or coupler insert.

Recharge with approximately 540-660psi'(37- 45 bar) of nitrogen.

Replace accumulator.

Examine the valveseats for wearandpitting. Replace if necessary.

Arrange a barrelortank to collectdischarged water from pump. Compare this tothe rated

capacity to see ifthedischarge has actually decreased.

4307-308