Graco Inc. 233940 - Manual (Page 5)

5 310548
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:
D
are instructed to relieve the pressure,
D stop spraying,
D
check or service any of the system equipment,
D or 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 valve to OFF (down) and turn pres-
sure 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 wear, page 9; replace 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 246173; page 6.
Replace belt.
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.