PAGE 12 — BPX GASOLINE VIBRATOR • OPERATION AND PARTS MANUAL — REV. #1 (08/28/17)
GENERAL INFORMATION
GENERAL INFORMATION
The BPX backpack vibrator utilizes a Honda GXH50
2.5-hp, 4-stroke, overhead-valve, single-cylinder, gasoline
engine. The frame is mounted on three rubber isolators to
help reduce engine vibration. The vibrator comes standard
with a quick-disconnect coupling for easy removal of the
flexible shaft.
Tips
Keep the bending radius of the flexible hose to a
minimum during use.
Avoid starting the unit with the vibrator head immersed in
the concrete mix. After the engine has started, immerse
the vibrator head into concrete mix.
Excessive wear to the vibrating head can result from
misuse.
DO NOT allow the head to vibrate against already
hardened concrete or steel used for reinforcement.
NEVER drop or knock the vibrator head against any
hard objects. This can damage the eccentric end bell
assembly or bearings contained within the head.
ALWAYS rinse or wipe off any wet concrete before it dries
or hardens on any part of the unit (engine, shaft, or head).
CAUTION
When operating the BPX vibrator,
ALWAYS wear
rubber insulated gloves and boots. Safety glasses and
ear protection are also recommended.
WARNING
Before operating this gasoline-
powered vibrator, the operator must
read and understand the contents of
the operation manual. Failure to read
this manual may result in severe bodily
harm and damage to the equipment.
Backpack Vibrator Theory
The purpose of this vibrator is to
consolidate concrete by
removing air pockets and voids.
The vibrator is designed to set the particles in fresh concrete
in motion, thereby reducing friction and giving the mixture
a mobile quality so that gravity and the displacement of
entrapped air cause the concrete to settle easily into place.
By consolidating the concrete quickly, the vibrator allows
stiffer mixes to be poured than would otherwise be possible.
Vibration also makes concrete more watertight, increases
resistance to weathering, and creates a better bond
between concrete and reinforcement.
Because vibration causes much of the entrapped air in
concrete to rise to the surface, honeycombing is prevented.
Vibration also eliminates most air pockets between the
concrete and vertical forms.
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