Maintenance - Graco Express 3900 Operation

Maintenance

NOTE: For detailed engine maintenance and specifica-
tions, refer to separate Honda Engines Owner's Manual,
supplied.
DAILY: Check engine oil level and fill as necessary.
DAILY: Check hose for wear and damage.
DAILY: Check that all hose fittings are secure.
DAILY: Check trigger lock for proper operation.
DAILY: Check prime valve for proper operation.
DAILY: Check and fill the gas tank.
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.
334121B
Replacement elements can be purchased from your
local HONDA dealer.
AFTER EACH 100 HOURS OF OPERATION:
Change engine oil. Reference Honda Engines Owner's
Manual for correct oil viscosity.
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.
Use the supplied engine oil funnel when draining oil.
OIL FUNNEL
Maintenance
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