Wacker Neuson BS 50, Repair Manual, Page: 124 / 156

Oil Injection (if equipped) Rammer Repair
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7.5 Testing/Replacing the Oil Pump
Background
Oil-injection Rammers can run up to 65 hours on one tank of oil.
If the Rammer has been used for a long period of time, and it does not
appear to have used any oil and the oil line check valve is operating
correctly, remove and check the oil pump.
Requirements
• Carburetor removed
• Engine removed
• Oil tank at least 1/4 full
Removal and testing
Perform the procedure below to check the oil pump.
7.5.1 Remove the carburetor. See topic
Removing the Carburetor.
7.5.2 Remove the engine. See topic
Removing the Engine
.
7.5.3 Remove the output hose
(a)
from the oil pump.
Do not remove the
input hose.
7.5.4 Remove the three screws
(b)
that hold the pump assembly to the
engine.
7.5.5 Separate the pump from the cartridge portion of the pump assembly.
The cartridge may remain in the engine.