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Maintenance
313776G 7
Maintenance
Pressure Relief Procedure
1. Engage trigger lock.
2. Turn engine ON/OFF switch to OFF.
3. Move pump valve to OFF (clockwise) and turn pres-
sure control knob fully counterclockwise.
4. Disengage the trigger lock. Hold a metal part of the
gun firmly to a grounded metal pail, and trigger the
gun to relieve pressure.
5. Engage the trigger lock.
6. Open pressure drain valve. Leave valve open until
you are ready to spray again.
If you suspect 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. Clear hose
or tip obstruction.
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.
DAILY: Check prime/spray drain valve for proper opera-
tion.
DAILY: Check and fill the gas tank.
DAILY: Check that displacement pump is tight.
DAILY: Top off TSL level in displacement pump packing
nut to help prevent material buildup on piston rod and
early wear of packings.
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 and replace, if necessary. If operating in an unusu-
ally dusty environment: check filter daily.
WEEKLY/DAILY: Removeany debrisfrom hydraulicrod.
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 18; replace if
necessary.
YEARLY OR 2000 HOURS: Replace hydraulic oil and
filter element with Graco hydraulic oil 169236 (5 gal-
lon/18.9 liter) or 207428 (1 gallon/3.8 liter) and filter ele-
ment 246173; page 17.
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.
Caster Wheel
(See letter call-outs in Parts drawing on page 19.)
1. Once each year, tighten nut (127, detail A) until
spring washer bottoms out. Then back off the nut
1/2 to 3/4 turn.
2. Once each year, tighten nut (127) until it begins to
compress spring washer. Then tighten the nut an
additional 1/4 turn.
3. Once each month, grease the wheel bearing (F).
4. Check pin (55) for wear. If pin is worn out, there will
be play in the caster wheel. Reverse or replace the
pin as needed.
5. Check caster wheel alignment as necessary. To
align: loosen bolt (145), align wheel and tighten bolt.
CAUTION
• Minimum hose size allowable for proper sprayer
operation is 3/8 in. x 50 ft.
• For detailed engine maintenance and specifica-
tions, refer to separate Honda Engines Owner's
Manual, supplied.