Wyco WBP50 Bedienungsanleitung

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

Page 3March 2014

CONTENTS

Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Benets 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

Concrete Vibrator, Backpack Model WBP50

Page 4 March 2014

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

User Manual

Page 5March 2014

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 PAGE7. EXCESSIVE SPEEDS WILL

DAMAGE THE ENGINE AND VIBRATOR HEAD AND IT WILL

VOID ANY WARRANTY.

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.

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 750-D (13/16" square)

750-EH (1" square)

CK-9500

750-FI (1-3/8" square)

750-GI (1-3/4" square)

750-LI (2" square) recommended

750-SBI (2" round short)

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.

Concrete Vibrator, Backpack Model WBP50

Page 6 March 2014

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

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.)

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.

User Manual

Page 7March 2014

PREOPERATION 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 PRE-

OPERATION 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 muer 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 page11).

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 page12).

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

page13). 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

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 page5 and “Pre-Operation Checks” on

page7.

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.

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.

OTE:NDo 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.

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.

User Manual

Page 9March 2014

Using the Tachometer

The tachometer records engine hours and speed.

Press and release the tachometer button to toggle between

Hours, Tach and Service modes.

To view the number of engine starts: In Hours mode

(hourglass icon on left side of screen), hold down the button.

The screen will display the number of Engine Starts.

To view the maximum RPM display: On the RPM screen,

press and hold the button until Max 2RPM is displayed. This is

your Max RPM.

To clear the maximum RPM, continue to hold the button until

“00000” displays.

Stopping the Engine

To stop the engine in an emergency, simply turn the engine

switch to the OFF position. Under normal conditions, use the

following procedure.

1. Move the orange throttle lever to the STOP position.

2. Turn the engine switch to the OFF position.

3. Turn the fuel valve lever to the OFF position.

MAINTENANCE

Flex Shaft Grease

After each 50 hours of use, re-grease the flex shaft with Wyco

synthetic shaft grease #514B.

Vibrator Head Lubricant

If the vibrator head used is oil lubricated, after 50 hours of

use, change oil with Wyco lubricant #514-O.

Speed Increaser Servicing

After 250 hours of operation, the speed increaser assembly

should be disassembled, thoroughly cleaned and

reassembled with 1 ounce of Wyco gear oil SF 1000 (Wyco

part number W402151, 8 oz.) While disassembled, check

to see if the centrifugal clutch or the clutch drum need

replacing due to wear. A replacement clutch kit is available.

See drawing “W402316 Replacement Clutch Kit” on page23.

Use the Wyco drawings at the back of this manual as a

reference while assembling and disassembling.

1. Remove 4-1/4-28x3.0 long socket head cap screws (Wyco

part number W402629) and the split ring lock washers

(Wyco part number W402117) from the speed increaser

housing (Wyco part number W402601) that attach it to

the Honda GXH50 engine, and disconnect the speed

increaser housing from the motor.

2. Remove 4 #10-24x2.25 long socket head cap screws (Wyco

part number W402626) and the split ring lock washers

(Wyco part number W402XX) from the motor adapter

housing (Wyco part number W402153) and allow the gear

oil to drain from the gear housing.

3. Remove the gear oil plug (Wyco part number W402152),

the nylon washer (Wyco part number W402153) and allow

the gear oil to drain from the gear housing.

4. Clamp the speed increaser housing into a vise to secure it

while removing the internal components.

5. Hold the clutch drum (Wyco part number W402187) in

place using a chain or oil lter style strap wrench and

unscrew the hex driver on the opposite end using a 5/16"

allen wrench.

6. When the clutch drum is removed, it will allow for removal

of the bearing adapter retainer plate (Wyco part number

W402610). This plate lifts o and interfaces with an O-ring

(Wyco part number W402627). Remove the O-ring to

allow for removal of the input gear assembly (Wyco part

number W402615).

7. Tap on the internal gear through the plug hole on the

base of the speed increaser to loosen and remove the

input gear assembly.

8. Remove the snap ring (Wyco part number W402125) that

holds the output gear assembly in place and remove the

assembly from the housing.

Concrete Vibrator, Backpack Model WBP50

Page 10 March 2014

9. Inspect the gear teeth and verify they are not worn.

Check the bearings to verify they are functional—turning

smoothly and freely. If either is worn, replace them both.

MPORTANTI

If EITHER the gear teeth OR the bearings are worn, replace

them BOTH at the same time with Wyco part numbers

W402615 and W402620.

10. Clean the internal surfaces of the gear increaser

housings, including the O-ring groove (Wyco part

numbers W402601, W402602, W402610 and W401612)

before reassembly.

11. Press the output gear assembly into place and install

the snap ring (Wyco part number W402125) in place to

prevent it from backing out.

12. Insert the input gear assembly into the cavity in the speed

increaser housing. You may need to use a 5/16" hex driver

to rotate the output shaft to align the gear before the

input gear assembly drops into the correct position.

13. Install a new O-ring (Wyco part number W402627) into

the groove around the bearing adapter.

14. Position the bearing adapter plate (Wyco part number

W402610) into the mating groove so it contacts the

bearing adapter (Wyco part number W402602).

15. Align the motor mounting bracket (Wyco part number

W402612) so the 4 holes for the #10-24 bolts align with

the threaded blind holes on the speed increaser housing

(Wyco part number W402601).

16. Apply Loctite 242 (or equivalent thread locker) onto the

threads of four #10-24x2.25L SHCS. Place the screws into

the clearance holes on the motor mounting bracket (Wyco

part number W402612) and torque to 25 in-lb.

17. Align the clutch drum (Wyco part number W402187) with

the mating threads on the input gear (Wyco part number

W402614) and apply 40 ft-lb of torque to tighten.

18. Put 2 ounces of gear oil (Wyco part number W402151)

into the gear increaser housing through the 1/4-

28 bolt hole on the housing, opposite the motor

mounting bracket.

19. Install the 1/4" nylon washer (Wyco part number

W401253) and the 1/4-28x0.25 button cap screw (Wyco

part number W402152) and torque to 50 in-lb.

20. Align the motor bracket geometry with that on the

Honda GXH50 engine. Apply Loctite 242 or equivalent

onto the bolt threads and slide four 1/4" lock washers

(Wyco part number W402117) onto the bolts. Insert four

1/4-28x3.00 long alloy steel bolts (Wyco part number

W402629) into the clearance holes, and torque to 10 ft-lb.

Honda Engine GXH50

Follow the recommendations in the Honda engine Owner’s

Manual for their GXH50 engine regarding, but not limited to,

the spark plug and air filter service.

SERVICING THE ENGINE

The Importance of Maintenance

Good maintenance is essential for safe, economical and

trouble-free operation. It also helps reduce pollution.

IMPROPER MAINTENANCE, OR FAILURE TO CORRECT

A PROBLEM BEFORE OPERATION, CAN CAUSE A

MALFUNCTION IN WHICH YOU CAN BE SERIOUSLY HURT

OR KILLED.

ALWAYS FOLLOW THE INSPECTION AND MAINTENANCE

RECOMMENDATIONS AND SCHEDULES IN THIS MANUAL.

To help you properly care for your engine, the following

pages include a maintenance schedule, routine inspection

procedures, and simple maintenance procedures using

basic hand tools. Other service tasks that are more difficult,

or require special tools, are best handled by professionals

and are normally performed by a Honda technician or other

qualified mechanic.

The maintenance schedule applies to normal operating

conditions. If you operate your engine under severe

conditions, such as sustained high-load or high-temperature

operation, or use in unusually wet or dusty conditions,

consult your servicing dealer for recommendations

applicable to your individual needs and use.

Maintenance, replacement, or repair of the emission control

devices and systems may be performed by any engine repair

establishment or individual, using parts that are‘‘certified’’to

EPA standards.

Maintenance Safety

Some of the most important safety precautions follow.

However, we cannot warn you of every conceivable hazard

that can arise in performing maintenance. Only you can

decide whether or not you should perform a given task.

Good maintenance is essential for safe, economical and

trouble-free operation. It also helps reduce pollution.

FAILURE TO PROPERLY FOLLOW MAINTENANCE

INSTRUCTIONS AND PRECAUTIONS CAN CAUSE YOU TO

BE SERIOUSLY HURT OR KILLED. ALWAYS FOLLOW THE

PROCEDURES AND PRECAUTIONS IN THIS MANUAL.

Safety Precautions

• Make sure the engine is off before you begin any

maintenance or repairs. This will eliminate several

potential hazards:

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