Wacker Neuson BS 50-4s, BS 50-4As Repair Manual page 20

Operation
For rammers without oil injection
(BS 50-2, BS 60-2, BS 70-2, BS 65-V, BS 65-V)
If the rammer has a fuel tank (c) but no oil tank, the engine requires a two-cycle
gasoline/oil mixture.
NOTICE: Use only the recommended gasoline/oil mixture to fuel this machine.
Using gasoline alone will severely damage the engine.
■ Use only Wacker Neuson two-cycle or other fully synthetic oil meeting the
Requirements
NMMA TC-W3, JASO FD, or ISO-L-EGD specification.
■ A gasoline/oil ratio in a range from 50:1 to 100:1 can be used. For optimum
engine performance and durability, a 100:1 ratio with a fully synthetic oil meeting
the specification described above is preferred.
■ Mix regular unleaded gasoline and two-cycle engine oil in a separate container
before filling the tank.
■ Refer to the chart below for the proper quantities to use when mixing gasoline
and oil.
FUEL RATIO 50:1
Gasoline Oil
5 liters 100 ml
10 liters 200 ml
15 liters 300 ml
c
wc_gr011466
Gasoline Oil
1 gallon 2.5 oz.
3 gallons 8.0 oz.
5 gallons 13.0 oz.
20
FUEL RATIO 100:1
Gasoline Oil Gasoline
5 liters 50 ml 1 gallon
10 liters 100 ml 3 gallons
15 liters 150 ml 5 gallons
Rammer
Oil
1.25 oz.
4.0 oz.
6.5 oz.
wc_tx004062gb_FM10.fm