Maintenance - Graco 310778N Repair Manual

WARNING
SKIN INJECTION HAZARD
The system pressure must be manually relieved to
prevent the system from starting or spraying acciden-
tally. 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:
• are instructed to relieve the pressure,
• stop spraying,
• check or service any of the system equipment,
• 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 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 necessary.
DAILY: Check hose for wear and damage.
DAILY: Check gun safety for proper operation.
6

Maintenance

DAILY: Check pressure drain valve for proper operation.
DAILY: Check and fill the gas tank.
DAILY: Check that displacement pump is tight.
DAILY: Check level of TSL in displacement pump pack-
ing 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 viscosity.
WEEKLY: Remove engine air filter cover and clean ele-
ment. 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 10; 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 gal-
lon/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.
Maintenance
310778N