Table of Contents
Advertisement
Chemical Injection System
Refer to Figure 5.7 and follow this chemical injection system
disassembly procedure.
Figure 5.7 - Chemical Injection System
Item
Name
1
Chemical injection venturi
2
O-Ring
3
Barbed nipple
4
Check ball
5
Spring
6
Piston and unloader housing
CAUTION:
Be careful not to lose check ball and
spring.
1. Remove the chemical injection fitting, check ball, and
spring.
2. Using a large straight tip screwdriver, unscrew and
remove the chemical injection venturi and O-Ring from
discharge port.
Portable Pressure Washer Familiarization and Troubleshooting Guide
Unloader
Refer to Figure 5.8 when following this disassembly
procedure.
CAUTION:
pressure.
1. Remove the M25-1.0 unloader cap with a 24mm wrench.
NOTE:
unloader piston parts may show some slight
differences depending on production date. If the
entire unloader system is replaced, newer assemblies
are completely interchangeable with older models.
Figure 5.8 - Unloader Parts
Item
1
2
3
4
5
6
7
2. Remove the unloader spring and the unloader piston.
These pieces should just slide out.
3. Remove the unloader seat by inserting a 90° O-Ring pick
into the orifice machined in the side of the seat, then
gently pull the seat out of the housing.
42
Section 5 • Small Frame Gas Pump
Unloader cap is under strong spring
Unloader cap, unloader spring, and
Name
Piston and unloader housing
O-Ring
Unloader seat
Unloader piston
Unloader cap
Unloader spring
Split-ring seal
Advertisement
Table of Contents
Troubleshooting
