Part 2 - Disassembly; General Information & Special Tools; Pump Head; Piston & Unloader Housing Removal - Briggs & Stratton CE8070 Troubleshooting Manual

Part 2 - Disassembly

General Information & Special Tools
NOTE:
There are no special tools required to
disassemble or reassemble this pump.
CAUTION:
The pump is full of oil. When
removing pump from engine, drain by pouring oil out
of port used by the crankshaft.

Pump Head

Refer to Figure 5.3 for this procedure.
Figure 5.3 - Pump Head
Item Name
1 Water seal
2 Check valve
3 Low pressure transfer O-Ring
4 High pressure transfer O-Ring
5 Outlet check valve cap
6 Outlet check valve cap O-Ring
7 Pipe Plug - If present, DO NOT REMOVE
8 M6 lock washer
9 M6-1.0 x 35 cap screw
Using a 5mm Allen wrench, remove the four (4) M6-1.0 x
35 cap screws and lockwashers to separate pump head from
piston housing.
Portable Pressure Washer Familiarization and Troubleshooting Guide
To disassemble pump head:
1. Remove the three (3) water seals. Seals should slide out
by hand.
2. Remove the three (3) inlet check valves. A 5/16"-18
bottoming tap may be used to remove these valves. DO
NOT use a screwdriver as it will damage valve and head!
3. Remove the O-Ring from the high pressure transfer boss.
4. Remove the three (3) M8-1.5 outlet check valve caps and
O-Rings.
5. Remove the three (3) outlet check valves and O-Rings.
6. Do not attempt to remove the pipe plug (item 7). It is
installed with a thread-locking compound and is not
meant to be removed.
Piston & Unloader Housing Removal
Refer to Figure 5.4 for this procedure.
Figure 5.4 - Pump-Adapter Assembly
Item
1
2
3
Before disassembling the piston and unloader assembly, do
the following:
1. Remove the three (3) pilot spacers. These will just slide
off.
40
Section 5 • Small Frame Gas Pump
Name
Piston
Pilot spacer
Low pressure transfer O-Ring