Filter
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2. Test your repair before regular operation of the sprayer to
be sure that the problem is corrected. If the sprayer does
not operate properly, review the repair procedure to
determine if everything was done correctly. Refer to the
Troubleshooting section to help identify other possible
problems.
3. Make certain that the service area is well ventilated in
case solvents are used during cleaning. Always wear
protective eyewear while servicing. Additional protective
equipment may be required depending on the type of
cleaning solvent. Always contact the supplier of solvents
for recommendations.
4. If you have any further questions concerning your
SprayTECH airless sprayer, call SprayTECH:
Technical Service...................................1-800-292-4637
Fax ................................................1-800-525-9501
Maintaining the Engine
When transporting a sprayer with a gas engine, make sure
the fuel is shut off.
Important Facts Concerning this Sprayer
This gas-powered sprayer contains a clutch that engages
when the sprayer is pumping. The sprayer’s pressure control
system engages and disengages the clutch to control
pressure. To prevent unnecessary wear to the clutch, it is
advisable to adjust the engine speed and pressure setting to
limit the amount of times the clutch engages and disengages.
To reduce clutch wear, refer to the following examples.
Example:
Operating one gun with a .019 tip — reduce the engine speed
by adjusting the throttle to a low or medium setting and
increase pressure only until the heavy ends of the spray
pattern have been eliminated.
Example:
Operating one gun with .023 tip — increase engine speed to a
high setting and increase pressure until the heavy ends of the
spray pattern have been eliminated.
Example:
Spraying light-bodied materials at low pressure — to reduce
surging at the gun and to decrease clutch wear, reduce the
engine speed to idle and reduce pressure until the desired
spray pattern is achieved.
Routine Engine Maintenance
Daily
• Check and fill the gas tank.
• After the first 20 hours of operation, drain the oil and refill
with clean oil. Check the engine oil level and fill as
necessary.
Weekly
• Remove the cover of the air filter and clean the element.
Replace the element if necessary. If operating in an
unusually dusty environment, check the filter daily and
replace if necessary. (Replacement elements can be
purchased from your local SprayTECH dealer.)
• After each 50 hours of operation: Change the engine oil.
Spark Plug
• Use only a (NKG) BP6ES plug.
• Gap the plug 0.025” – 0.030” (0.7 – 0.8 mm).
• Make sure to use a spark plug wrench when installing and
removing the plug.
NOTE: For detailed engine specifications and
maintenance, refer to the separate engine
manual supplied with this sprayer.
WARNING
8©SprayTECH. All rights reserved.
Replacing the Filter
1. Loosen and remove the filter
body by hand.
2. Remove the filter and core
spring from the filter housing.
3. Remove the core spring from
inside the filter.
4. Inspect the filter. Based on
inspection, clean or replace the
filter.
5. Inspect the filter housing o-ring.
Based on inspection, clean or
replace the o-ring.
6. Slide the new or cleaned filter
over the core spring. Place the
filter and core spring into the
center of the filter housing.
7. Clean the inside of the filter
body.
8. Slide the filter body over the
filter and thread it into the filter
housing until secure.
Replacing the PRIME/SPRAY Valve
Perform the following procedure using PRIME/SPRAY valve
replacement kit P/N 0507690.
1. Drive the groove pin out of the valve handle.
2. Remove the valve handle and the cam base.
3. Using a wrench, loosen and remove the valve housing
assembly.
4. Make sure the gasket is in place and thread the new valve
housing assembly into the filter housing. Tighten securely
with a wrench.
5. Place the cam base over the valve housing assembly.
Lubricate the cam base with grease and line up the cam
with the filter block using the dowel pin.
6. Line up the hole on the valve stem with the hole in the
valve handle.
7. Insert the groove pin into the valve handle and through
the valve stem to secure the valve handle in position.
Dowel Pin
Cam Base
Valve Stem
Filter
Housing
Valve Housing
Assembly
Gasket
Valve Handle
Groove Pin
NOTE: The filter body should
be hand-tightened,
but make sure it is
seated fully into the
filter housing.
Filter
Body
Core
Spring
Filter
Filter
Housing
O-ring
Filter
Housing