WycoTool WBP50 Backpack - Manual (Page 8)

Concrete Vibrator, Backpack Model WBP50
Page 8 March 2014
To start a cold engine, move the choke lever to the CLOSED
position . To restart a warm engine, leave the choke lever in
the OPEN position .
Turn the engine switch to the ON position .
Set the throttle lever to the SLOW position . Pull the starter
grip lightly until you feel resistance, then pull briskly . Return
the starter grip gently .
OTEE: N Do not allow the starter grip to snap back against
the engine . Return it gently to prevent damage to
the starter .
If the choke lever has been moved to the CLOSED position to
start the engine, gradually move it to the OPEN position as
the engine warms up .
MPORTANT I
The engine will not start if the throttle lever is all the way back
in the OFF position. Push the lever forward about 1/2” into the
SLOW position to engage it.
Setting the Engine Speed
Position the throttle lever for the desired engine speed .
Vibrator heads rotate at twice the speed of the engine and
are designed for nominal speeds of 12,000…13,000 RPM
(Engine speed of 6,000…6,500 RPM) . Operating at excessive
speeds may reduce the performance or life of the product .
Maximum engine speed will change with the size of the
vibrator head and shaft . Use the engine governor screw to
adjust the throttle range within safe operational limits .
The engine throttle lever is controlled by the orange throttle
lever on the left side of the backpack . The throttle lever
should be set to SLOW for startup, FAST for operation, and
STOP for shutdown .