WycoTool WBP50 User Manual
Concrete Vibrator
Backpack Model WBP50
VBR-UM-00173-EN-02 (March 2014)
User Manual
Concrete Vibrator, Backpack Model WBP50
Page 2 March 2014
User Manual
CONTENTS
Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Benets of Vibration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Head and Shaft Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Adjusting the Backpack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Frame . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Hip Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Shoulder Straps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Load Lifters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sternum Strap. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Final Tweaks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pre-Operation Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Is Your Engine Ready to Go? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Safe Operating Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Starting the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Setting the Engine Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Stopping the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flex Shaft Grease . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Vibrator Head Lubricant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Speed Increaser Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Honda Engine GXH50. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Servicing the Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
The Importance of Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Maintenance Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Refueling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Spark Plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Spark Arrester (Optional Equipment) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Storing Your Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Page 3 March 2014
Concrete Vibrator, Backpack Model WBP50
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Honda Engine Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Honda Engine Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wyco Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Wyco Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
W402535 Backpack Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
W402530 Frame Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
W402600 Speed Increaser Assembly, 1 of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
W402600 Speed Increaser Assembly, 2 of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
W402600 Speed Increaser Assembly, 3 of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
W402600 Speed Increaser Assembly, 4 of 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
W402316 Replacement Clutch Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
W402630 Quick Disconnect Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Page 4 March 2014
User Manual
SAFETY
Read and follow all safety precautions given in the Honda
engine instruction manual for their GXH50 engine. Read and
follow the safety instructions given below.
• WHEN THE BACKPACK IS WORN, THE FLEX SHAFT
MUST ALWAYS BE ON THE RIGHT HAND SIDE OF THE
OPERATOR AS ASSEMBLED BY THE FACTORY. IF USED
ON THE LEFT SIDE, THE MUFFLER EXHAUST WOULD BE
DIRECTED TOWARD THE OPERATOR’S BACK, CREATING
A DANGEROUS SITUATION.
• NEVER FILL THE ENGINE WITH GAS WHILE THE
BACKPACK IS ON OPERATOR’S BACK OR WHILE IT IS
RUNNING! IF FUEL IS SPILLED, WIPE IT AWAY CAREFULLY,
AND WAIT UNTIL THE FUEL HAS DRIED BEFORE
STARTING THE ENGINE.
• FLAMMABLE, NO SMOKING.
• NEVER RUN THE ENGINE WITHOUT THE FLEX SHAFT
ATTACHED. WITH THE FLEX SHAFT REMOVED, THE
ROTATING SHAFT IS EXPOSED, WHICH COULD GET
ENTANGLED WITH LOOSE CLOTHING, HANDS AND
OTHER ITEMS, CAUSING A DANGEROUS SITUATION.
• ALWAYS WEAR HEARING AND EYE PROTECTION.
• KEEP HANDS AWAY FROM HOT METAL PARTS OF THE
ENGINE AND SPEED INCREASER.
DO NOT OPERATE THE UNIT ABOVE SPEEDS LISTED IN
“OPERATION” ON PAGE7. EXCESSIVE SPEEDS WILL
DAMAGE THE ENGINE AND VIBRATOR HEAD AND IT WILL
VOID ANY WARRANTY.
HEAD AND SHAFT SELECTION
The WBP50 uses a quick disconnect (Q.D.). The Q.D. connect
lets you push the flex shaft assembly into the motor
connector, rotate it 1/4 turn, then use a lever mechanism to
lock it in place.
If using a Wyco shaft with a threaded end, threaded male
connector part number W423500 is required.
Shaft Head
CK-8900
CK-9500
LI is the largest sized head and is recommended with
this unit.
Although a standard 14-foot shaft length is available for all
head sizes, the length may be cumbersome to handle. The
recommended shaft lengths are 7 and 10 feet. Heavy duty
flex shafts—available for the 1-3/8" and larger head sizes
only—are available in the two most common lengths, 7 ft
(part number W989509) and 10 ft (part number W989512).
These shafts have reinforcing springs that increase life in
this application.
Use the head size that best matches the application. Consider
the vibrator’s radius of action when selecting a vibrator
head, ensuring that the entire area of concrete is vibrated.
A vibrator’s radius of action is approximately 4 times the
head size (head sizes are listed in the table above). This is a
general guide, and it can vary significantly with variations in
concrete mix design and type of application. The radius of
action is the distance from the vibrator head within which
consolidation occurs.
750-D (13/16" square)
750-EH (1" square)
750-FI (1-3/8" square)
750-GI (1-3/4" square)
750-LI (2" square) recommended
750-SBI (2" round short)
BENEFITS OF VIBRATION
Why use Wyco products to vibrate?
• Increased concrete strength by removing air voids.
• Improved appearance by removing air voids.
• Increased bond between concrete and reinforcing bars.
• Fluidized concrete allows a stiffener mix with a lower
water to cement ratio to be placed. This increases
concrete strength.
• Reduced cold joints and honey combing.
Page 5 March 2014
Concrete Vibrator, Backpack Model WBP50
ADJUSTING THE BACKPACK
The backpack has a number of straps that let you adjust your
load for maximum comfort.
Frame
The adjustable frame allows you to position the straps to fit
your body.
1. Loosen and pull out the Velcro closure.
2. Put the harness strap into the right position, then lace the
straps through the 4 attachment loops. Tighten the strap
and secure the Velcro closure.
Hip Belt
Sternum Strap
Adjust the sternum strap as needed to a comfortable height
across your chest.
Buckle the sternum strap and tighten until the shoulder
straps are pulled inwards comfortably from your shoulders,
allowing your arms to move freely.
Pull the stabilizer straps located on either side of the hip
belt to snug the pack body toward the hip belt and stabilize
the load.
Final Tweaks
Pull the stabilizer straps, located on either side of the hip
belt, to snug the pack body toward the hip belt and stabilize
the load.
Go back to the shoulder straps and carefully take a bit of
tension off of them. This ensures the majority of the weight is
carried by your hips.
1. Loosen all of the straps on the harness system and
position the hip belt so the top of the iliac crest is about
1” down from the top of the hip belt. Correct positioning
will direct the weight onto your hips.
2. Put the pack on your back so that the hip belt is resting
over your hip bones.
3. Close the hip belt buckle and tighten it.
4. Check the padded sections of the hip belt to make sure
they wrap around your hips comfortably. Keep at least 1"
of clearance on either side of the center buckle.
Shoulder Straps
Pull down and back on the ends of the shoulder straps to
tighten them.
Shoulder straps should fit closely to hold the pack body
against your back, keeping the load forward. They should
NOT carry the weight.
Load Lifters
Load-lifter straps are located just below the tops of your
shoulders (near your collarbones) and should angle back
toward the pack body at a 45° angle.
Gently snug the load-lifter straps to pull weight off your
shoulders. (Overtightening the load lifters will cause a gap to
form between your shoulders and the shoulder straps.)
Page 6 March 2014
User Manual
PREOPERATION CHECKS
Is Your Engine Ready to Go?
For your safety, and to maximize the service life of your
equipment, take a few minutes before you operate the
engine to check its condition. Take care of any problems you
fine, or have your servicing dealer correct them, before you
operate the engine.
IMPROPERLY MAINTAINING THE ENGINE, OR FAILURE
TO CORRECT A PROBLEM BEFORE OPERATION,CAN
CAUSE A MALFUNCTION IN WHICH YOU COULD BE
SERIOUSLY INJURED OR KILLED. ALWAYS PERFORM A PREOPERATION INSPECTION BEFORE EACH OPERATION AND
CORRECT ANY PROBLEM.
Before beginning your pre-operation checks, be sure the
engine is level and the engine switch is in the OFF position.
Always check the following items before you start the engine:
Check the General Condition of the Engine
1. Look around and underneath the engine for signs of oil or
gasoline leaks.
2. Remove any excessive dirt or debris, especially around
the muer and recoil starter.
3. Look for signs of damage.
4. Check that all shields and covers are in place, and all nuts,
bolts and screws are tightened.
Check the Engine
1. Check the fuel level (see “Refueling” on page11).
Starting with a full tank will help to eliminate or reduce
operating interruptions for refueling.
2. Check the engine oil level (see “Engine Oil” on page12).
Running the engine with a low oil level can cause engine
damage.
The Oil Alert system (applicable types) will automatically
stop the engine before the oil level falls below safe limits.
However, to avoid the inconvenience of an unexpected
shutdown, always check the engine oil level before
startup.
3. Check the air filter element (see “Air Cleaner” on
page13). A dirty air filter element will restrict air flow to
the carburetor, reducing engine performance.
4. Check the equipment powered by this engine.
Review the instructions provided with the equipment
powered by this engine for any precautions and procedures
that should be followed before engine startup.
Check the Throttle Lever
The throttle lever controls the speed of the engine. Push it
forward to increase the engine speed. Pull it back to decrease
the engine speed. The lever is an orange hand control
located on the left side of the backpack.
MPORTANTI
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.
OPERATION
Safe Operating Precautions
Before operating the engine for the first time, please review
the “Safety” on page5 and “Pre-Operation Checks” on
page7.
CARBON MONOXIDE GAS IS TOXIC. BREATHING IT CAN
CAUSE UNCONSCIOUSNESS AND EVEN DEATH. AVOID
ANY AREAS OR ACTIONS THAT EXPOSE YOU TO CARBON
MONOXIDE.
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.
Starting the Engine
Move the fuel valve to the ON position.
Page 7 March 2014
Concrete Vibrator, Backpack Model WBP50
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.
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.
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.
OTE: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.
MPORTANTI
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.
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.
Page 8 March 2014
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