Oil Injection (if equipped) Rammer Repair
120 wc_tx001549gb.fm
7.3 Float Switch Testing and Replacement (pre-2010 models)
See Graphic: wc_gr001526
NOTICE: Do not bypass the float switch except during testing; engine
failure may occur.
The function of the float switch is to prevent the engine from running
without oil in the oil tank. If the oil tank is low on oil, the float switch
opens and kills the ignition. A severed float switch wire will also kill the
ignition.
In the event that the engine runs but shuts off by itself within
approximately 25 seconds, even with oil in the oil tank, the float switch
could be faulty.
To test the float switch (a):
7.3.1 Remove the carburetor guard (d).
7.3.2 Inspect the float switch wire for damage.
• If damage is present, replace the float switch.
• If no damage to the float switch wire is obvious and the connector
is fully seated at the engine (b), continue.
7.3.3 Unplug the float switch wire from the engine.
7.3.4 Insert a jumper wire into the terminal on the engine to connect the two
terminal leads.
7.3.5 Start the engine and run it at idle.
• If the engine continues to run for more than 45 seconds, the float
switch is faulty and must be replaced.
• If the engine still shuts off within 25 seconds, the ignition module
has failed and must be replaced.
To replace the float switch:
7.3.6 Drain the remaining oil from the oil tank or position the rammer so that
the oil in the tank will not run out when the float switch is removed.
7.3.7 Remove the oil line from the float switch.
7.3.8 Disconnect the float switch from the back of the engine.
7.3.9 Unscrew the float switch assembly from the oil tank.
7.3.10 Screw a new float switch assembly into the oil tank.
7.3.11 Install the oil line to the float switch. Ensure that the oil line from the oil
tank is routed through the coiled portion (c) of the float switch wire near
the switch.
7.3.12 Ensure that the float switch plug is fully seated in the connector on the
back of the engine.
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