Multiquip MRH-800DS User Manual

OPERATION AND PARTS MANUAL

Vibration Roller

Model MRH-800DS

(Diesel)

© COPYRIGHT 2003, MULTIQUIP INC.

Revision #3 (02/02/05)

MULTIQUIP INC

18910 WILMINGTON AVE. 800-427-1244
CARSON, CALIFORNIA 90746 FAX: [phone]
310-537-3700
800-421-1244 800-478-1244
FAX: [phone] FAX: [phone]

E-mail:[e-mail] • www:multiquip.com

Atlanta • Boise • Dallas • Houston • Newark
Montreal, Canada • Manchester, UK
Rio De Janiero, Brazil • Guadalajara, Mexico

..

. PARTS DEPARTMENT:

..

SERVICE DEPARTMENT/TECHNICAL ASSISTANCE:

PAGE 2 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

HERE'S HOW TO GET HELP

PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING

PARTS DEPARTMENT

800-427-1244 or 310-537-3700
FAX: [phone] or 310-637-3284

SERVICE DEPARTMENT

800-421-1244
FAX: [phone]

TECHNICAL ASSISTANCE

800-478-1244
FAX: [phone]

WARRANTY DEPARTMENT

888-661-4279, or 310-661-4279
FAX: [phone]

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 3

TABLE OF CONTENTS

Proposition 65 Warning ............................................. 2

Here's How To Get Help ............................................ 3

Table Of Contents ..................................................... 4

Parts Ordering Procedures ....................................... 5

MIKASA MRH-800DS­VIBRATION ROLLER

Safety Message Alert Symbols .............................. 6-7

Rules for Safe Operation ........................................ 8-9

Operation and Safety Decals ............................. 10-11

Roller Specifications ................................................ 12

Engine Specifications .............................................. 13

Dimensions ............................................................. 14

Features .................................................................. 15

Vibration roller Components .............................. 16-17

Handle Bar/Lever Components.......................... 18-19

Engine Components ............................................... 20

Inspection ........................................................... 22-23

Initial Startup ...................................................... 24-25

Operation ........................................................... 26-27

Maintenance ...................................................... 28-33

Roller Troubleshooting ....................................... 34-35

Engine Troubleshooting ...................................... 36-37

Yanmar L100ee-DEVMK2 Engine

Cylinder Block Assembly .................................... 72-73

Cylinder Head and Cover Assembly .................. 74-75

Muffler Assembly ............................................... 76-77

Air Cleaner Assembly......................................... 78-79

Crankshaft, Piston and Camshaft Assembly ..... 80-81

Lub. Oil Pump and Governor Assembly ............. 82-83

Cooling and Starting Device Assembly .............. 84-85

Fuel Injection PumpAssembly ............................ 86-87

Fuel Tank and Fuel Line Assembly .................... 88-89

Starting Motor and Dynamo Assembly .............. 90-91

Tool Label and Gasket Set Assembly ................ 92-93

Terms and Conditions of Sale ................................. 94

PARTS ILLUSTRATIONS

Explanation Of Code In Remarks Column .............. 38

Suggested Spare Parts ........................................... 39

Decal Placement ................................................ 40-41

Axle Assembly .................................................... 42-43

Base Assembly .................................................. 44-45

Front Guard Assembly ....................................... 46-47

Side Cover Assembly ......................................... 48-49

Water Tank Assembly ......................................... 50-51

Hydraulic System Assembly ............................... 52-55

Hydraulic Oil Tank Assembly .............................. 56-57

Engine Assembly ............................................... 58-59

Electric Device Assembly ................................... 60-61

Clutch (Vibration) Assembly .............................. 62-63

Vibrator Assembly .............................................. 64-65

Upper Control Arm Assembly ............................ 66-69

Lower Control Arm Assembly ............................ 70-71

PAGE 4 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

NOTE

Specification and
part number are
subject to change
without notice.

PARTS ORDERING PROCEDURES

When ordering parts,

please supply the following information:

❒❒

❒ Dealer account number

❒❒
❒❒

❒ Dealer name and address

❒❒
❒❒

❒ Shipping address (if different than billing address)

❒❒
❒❒

❒ Return fax number

❒❒
❒❒

❒ Applicable model number

❒❒
❒❒

❒ Quantity, part number and description of each part

❒❒
❒❒

❒ Specify preferred method of shipment:

❒❒

✓ FedEx or UPS Ground
✓ FedEx or UPS Second Day or Third Day
✓ FedEx or UPS Next Day
✓ Federal Express Priority One
✓ DHL
✓ Tr u ck

Note: Unless otherwise indicated by customer, all
orders are treated as “Standard Orders”, and will
ship within 24 hours. We will make every effort to
ship “Air Shipments” the same day that the order is
received, if prior to 2PM west coast time. “Stock
Orders” must be so noted on fax or web forms.

Here’s how to get help...

Please have the model and serial number on
hand when calling.

Parts Department

800-427-1244 Fax: [phone]

310-537-3700 Fax: [phone]

Mayco Parts

800-306-2926 Fax: [phone]

310-537-3700 Fax: [phone]

Service Department

800-478-1244 Fax: [phone]

310-537-3700

MQ Power Service Department

800-835-2551 Fax: [phone]

310-537-3700

Warranty Department

800-421-1244, Ext. 279 Fax: [phone]

310-537-3700, Ext. 279

Multiquip’s Main Phone Numbers

800-421-1244 Fax: [phone]

310-537-3700

Place Your Parts Order Via Web or Fax

For Even More Savings!

Extra Discounts!

All parts orders which include complete part numbers
and are received by our automated web parts order
system, or by fax qualify for the following extra
discounts:

Ordered Standard Stock orders

via orders ($750 list and above)

Fax 3% 10%

Web 5% 10%

Special freight allowances
when you order 10 or more
line items via Web or Fax!**

FedEx Ground Service

No other allowances on freight shipped by any other
carrier.

NOTE: DISCOUNTS ARE SUBJECT TO CHANGE

at no charge for freight

MULTIQUIP INC.

18910 WILMINGTON AVENUE
POST OFFICE BOX 6254
CARSON, CALIFORNIA 90749
310-537-3700 • 800-421-1244
FAX: [phone]
E-MAIL: [e-mail]
WWW: multiquip.com

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 5

Direct TOLL-FREE access

to our Parts Department:

Toll-free nationwide — 800-427-1244

MRH-800DS — SAFETY MESSAGE ALERT SYMBOLS

FOR YOUR SAFETY AND THE SAFETY OF OTHERS!

Safety precautions should be followed at all times when
operating this equipment. Failure to read and understand the
Safety Messages and Operating Instructions could result in
injury to yourself and others.

This Owner's Manual has been
developed to provide complete

NOTE

Before using this vibration roller, ensure that the operating
individual has read and understands all instructions in this
manual.

instructions for the safe and efficient
operation of the Multiquip Model
MRH-800DS Vibration Roller.
Refer to the enginemanufacturer’s
instructions for data relative to its safe
operation.

HAZARD SYMBOLS

SAFETY MESSAGE ALERT SYMBOLS

The three (3) Safety Messages shown below will inform you
about potential hazards that could injure you or others. The
Safety Messages specifically address the level of exposure to
the operator, and are preceded by one of three words: DANGER,

WARNING, or CAUTION.

Lethal Exhaust Gases

Engine exhaust gases contain poisonous
carbon monoxide. This gas is colorless and

odorless, and can cause death if inhaled.
NEVER operate this equipment in a confined

area or enclosed structure that does not
provide ample free flow air.

Explosive Fuel

GASOLINE is extremely flammable, and its
vapors can cause an explosion if ignited. DO
NOT start the engine near spilled fuel or

combustible fluids. DO NOT fill the fuel tank
while the engine is running or hot. DO NOT
overfill tank, since spilled fuel could ignite if it
comes into contact with hot engine parts or
sparks from the ignition system. Store fuel in

approved containers, in well-ventilated areas
and away from sparks and flames. NEVER
use fuel as a cleaning agent.

DANGER: You WILL be KILLED or

SERIOUSLY injured if you do not follow
directions.

WARNING: You CAN be KILLED or

SERIOUSLY injured if you do not follow
directions.

CAUTION: You CAN be injured if you

do not follow directions.

Potential hazards associated with this vibration roller operation
will be referenced with Hazard Symbols which appear
throughout this manual, and will be referenced in conjunction
with Safety Message Alert Symbols.

Burn Hazards

Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operations. Never operate the engine with heat
shields or heat guards removed.

Rotating Parts

NEVER operate equipment with covers, or

guards removed. Keep fingers, hands, hair and
clothing away from all moving parts to prevent
injury.

PAGE 6 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRH-800DS — SAFETY MESSAGE ALERT SYMBOLS

Accidental Starting

ALWAYS place the engine ON/OFF switch in

the OFF position, when the vibration roller is
not in use.

Sight and Hearing hazard

ALWAYS wear approved eye and hearing

protection.

Respiratory Hazard

ALWAYS wear approved respiratory

protection.

Equipment Damage Messages

Other important messages are provided throughout this manual
to help prevent damage to your vibration roller, other property,
or the surrounding environment.

NOTE

This vibration roller, other
property, or the surrounding
environment could be
damaged if you do not follow
instructions.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 7

CAUTION:

Failure to follow instructions in this manual
may lead to serious injury or even death! This
equipment is to be operated by trained and
qualified personnel only! This equipment is
for industrial use only.

MRH-800DS — RULES FOR SAFE OPERATION

■

NEVER touch the hot exhaust manifold,
muffler or cylinder. Allow these parts to
cool before servicing engine or vibration
roller.

The following safety guidelines should always be used when
operating the MIKASA MRH-800DS Vibration Roller:

GENERAL SAFETY

■

DO NOT operate or service this equipment before
reading this entire manual.

■

This equipment should not be operated by
persons under 18 years of age.

■

NEVER operate this equipment without proper
protective clothing, shatterproof glasses, steel­toed boots and other protective devices required
by the job. ALWAYS wear slip resistant safety
shoes or boots.

■

NEVER operate this equipment when not feeling
well due to fatigue, illness or taking medicine.

■

NEVER operate this equipment under the
influence or drugs or alcohol.

■

NEVER use accessories or attachments, which are not
recommended by Multiquip for this equipment. Damage to
the equipment and/or injury to user may result.

■

Manufacturer does not assume responsibility for any accident
due to equipment modifications.

■

Whenever necessary, replace nameplate, operation and
safety decals when they become difficult read.

■

ALWAYS wear proper respiratory (mask), hearing and eye
protection equipment when operating the vibration roller.

■

High Temperatures – Allow the engine to cool before adding
fuel or performing service and maintenance functions. Contact

hot

with

■

The engine of this
vibration roller requires
an adequate free flow of
cooling air. NEVER
operate the vibration
roller in any enclosed or
narrow area where free
flow of the air is restricted.
If the air flow is restricted
it will cause serious
damage to the vibration
roller or engine and may cause injury to people and property.
Remember the vibration roller's engine gives off DEADLY
gases.

■

ALWAYS refuel in a well-ventilated area, away from sparks
and open flames.

■

ALWAYS use extreme caution when working with flammable
liquids. When refueling, stop the engine and allow it to cool.

DO NOT

explosion could result from fuel vapors, or if fuel is spilled on
a hot engine.

■

NEVER operate the vibration roller in
an explosive atmosphere or near
combustible materials. An explosion or
fire could result causing severe

harm or even death.

■

Topping-off to filler port is dangerous, as it tends to spill fuel.

■

ALWAYS store the vibration roller in a clean, dry location out
of the reach of children.

components can cause serious burns.

smoke around or near the machine. Fire or

bodily

■

NEVER run engine without air cleaner. Severe engine

damage may occur.

■

NEVER leave the vibration roller unattended, turn off engine.

■

CAUTION must always be observed while servicing this

vibration roller. Rotating parts can cause injury if contacted.

■

DO NOT leave vibration roller with engine running. Use
chock blocks if parking

PAGE 8 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

vibration roller on a grade.

MRH-800DS — RULES FOR SAFE OPERATION

■

ALWAYS use extreme care when operating near obstructions,
on slippery surfaces, grades and side slopes.

■

When reversing, particularly on the edges and banks of
ditches, as well as in front of obstacles, the operator must
stay in a standing position at a safe distance from the machine.

■

When operating near any house/building or pipelines, always
check the effect of machine vibration. Stop the work if
necessary.

■

Unauthorized equipment modifications will void all
warranties.

■

Refer to the
questions or information.

■

DO NOT operate the vibration roller with the front or rear
cover open.

■

Replace any worn or damaged vibration roller components
immediately.

■

ALWAYS turn the engine
maintenance.

■

ALWAYS make sure vibration roller is correctly secured to

the trailer. Check all supports attaching the vibration roller to
the trailer and make sure they are tight.

■

ALWAYS keep the machine away from workers and

obstacles. Also keep the immediate area free of bystanders.

■

ALWAYS check the machine for loosened threads or bolts
before starting.

■

ALWAYS read, understand, and follow procedures in
Operator’s Manual before attempting to operate equipment.

■

ALWAYS be sure the operator is familiar with proper safety
precautions and operations techniques before using vibration
roller.

■

A copy of this manual shall accompany the vibration roller at
all times.

■

DO NOT use worn out hoses or couplings; inspect daily.

Engine Owner's Manual

for engine technical

OFF

before performing

■

■

Emergencies

■

Maintenance Safety

■

■

■

■

■

■

■

Lifting

■

High Temperatures – Always stop engine and allow the
engine to cool before adding fuel, oil or performing service

hot

and maintenance functions. Contact with
can cause serious burns.

NEVER disconnect any

These devices are intended for operator safety. Disconnection
of these devices can cause severe injury, bodily harm or
even death! Disconnection of any of these devices will void
all warranties.

ALWAYS know the location of the nearest

and

first aid kit

Also know the phone numbers of the nearest

doctor

and

invaluable in case of an emergency.

NEVER lubricate components or attempt service on a
running machine.

ALWAYS allow the machine a proper amount of time to

cool before servicing.
Keep the machinery in proper running condition.
Fix damage to the machine immediately and always replace

broken parts.
Dispose of hazardous waste properly. Examples of

potentially hazardous waste are used motor oil, fuel and
fuel filters.

DO NOT use food or plastic containers to dispose of
hazardous waste.

DO NOT pour waste, oil or fuel directly onto the ground,
down a drain or into any water source.

The vibration roller has an operating weight of approximately
1562 lbs. (709 kg). Use lifting equipment capable of lifting
this weight.

. Know the location of the nearest telephone.

fire department

"emergency or safety devices"

. This information will be

components

.

fire extinguisher

ambulance

,

■

Make sure the engine is off before lifting the machine.

■

Use reliable cable in lifting the machine.

■

Lift upright with sufficient bearing capacity to prevent
machine from tilting or slipping.

■

When lifting, keep the machine away from workers and
animals.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 9

MRH-800DS — OPERATION AND SAFETY DECALS

Figure 1 displays the operation and safety decals as they appear on the vibration roller. Should any of these decals become
damaged or unreadable, contact the Multiquip Parts Department for a replacement set.

Figure 1. Operation and Safety Decals

PAGE 10 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRH-800DS — OPERATION AND SAFETY DECALS

Figure 1. Operation and Safety Decals (Continued)

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 11

MRH-800DS — ROLLER SPECIFICATIONS

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PAGE 12 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRAMNAY

MRH-800DS — ENGINE SPECIFICATIONS

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1

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 13

MRH-800DS— VIBRATION ROLLER DIMENSIONS

SNOISNEMID.3ELBAT

A.ni501.mm0762

B.ni75.mm5441

HTGNEL

HTDIW

THGIEH

C.ni01.mm552

D.ni8.22.mm085

E.ni8.31.mm053

F.ni2.72.mm296

G.ni6

H.ni3.87.mm0991

I.ni5.64.mm0811

J.ni4.73.mm059

K.ni7.14.mm0601

L.ni6.9.mm542

.31.mm643

Figure 2. MRH-800DS Vibration Roller Dimensions

PAGE 14 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

The Mikasa Model MRH-800DS is a powerful compacting
tool capable of applying a tremendous force in consecutive
impacts to a soil surface. Its applications include soil compacting
for backfilling for gas pipelines, water pipelines and cable
installation work.

The impact force of the MRH-800DS levels and uniformly
compacts voids between soil particles to increase dry density.

Features include:



Hydraulic transmission to allow speed change without
gear shifting.



Deadman device which when pressed or hit will
cause the travel lever to return to neutral position
bringing the machine to a stop.



A horn to warn of machine’s approach.



Non-corrosive water tank for the sprinkler system with a
capacity of more than 10 gallons.



Lifting hook to transport machine.



Front bumper and working light.

MRH-800DS— FEATURES



Narrow profile with less than one inch wall clearance.
Narrower width allows access to tighter areas. No
exposed hydraulic hoses.



Oil bath lubricated bearings and external vibration
for less servicing and more dependability.



Front and rear drum scrapers.



Drum sprinkler system controls located near the
operator.



Easy access to hydraulic components and hydraulic
filter.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 15

MRH-800DS— VIBRATION ROLLER COMPONENTS

1

2

4

3

8

9

5
6

10

11

7

Figure 3. MRH-800DS Vibration Roller Components

PAGE 16 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRH-800DS— VIBRATION ROLLER COMPONENTS

Figure 3 illustrates the location of the major components
for the MRH-800DS Vibration Roller. The function of each
component is described below:

1. Fuel Tank/Cap – Fill with diesel fuel. Fuel tank holds
approximately 2 gallons (7.5 liters). DO NOT top off fuel.
Wipe up any spilled fuel immediately.

2. Center Cover – When opened and supported by strut,
provides access to oil pump and filter, battery, V-belt, and
clutch box.

3. Vibration Rollers – 25-inch wide steel drums that provide
compaction force in the compaction and patching of asphalt
type surfaces.

4. Front Headlights – Activate using switch on control
handle. Use to illuminate ground durring nighttime or low
light operating conditions.

5. Hydraulic Oil Gauge – Indicates the hydraulic oil level.

6. Oil Tank – Fill with proper grade of hydraulic oil.

7. Vibrator Oil Level Plug – Remove to check vibrator oil
level.

8. Lifting Hook – Used to lift the machine with crane or other
lifting device.

9. Engine – This machine uses the Yanmar L100A engine.
Refer to the engine Owner’s Manual for more information.

10. Water Tank– Holds 10.57 gallons (40 liters) for the sprinkler
system.

11. Parking Brake – Makes sure machine will not accidentally
move when parked or not in use.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 17

3

4

MRH-800DS— HANDLE BAR/LEVER COMPONENTS

1

2

6

5

Figure 4. MRH-800DS Lever Components

PAGE 18 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRH-800DS — HANDLE BAR/LEVER COMPONENTS

HANDLE BAR/LEVER COMPONENTS

Figure 4 illustrates the location of the major lever
components on the handle bar of the machine. Each
component is described below:

1. Travel Lever – Controls the direction of travel of the
machine (forward and reverse).

2. Horn Button – When pressed, gives a warning sound of
the machine approaching.

3. Vibration Lever – Turns vibration on and off.

4. Throttle Lever – Controls the start up of the machine.

5. Dead-Man Device – When pressed or hit while traveling
in reverse, causes the travel lever to return to neutral
position to stop the machine.

6. Light ON/OFF Switch - Turns headlight on and off.

7. Starter Switch - Engine starts when key is turned to the

RUN position

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 19

MRH-800DS— ENGINE COMPONENTS

Figure 5. MVH-402DSB Engine Components

ENGINE COMPONENTS

Figure 5 illustrates the location of the major engine
components of the machine. Each component is described
below:

1. Fuel Filler Cap – Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tighten securely.
DO NOT over fill.

2. Fuel Tank – Diesel engine holds 5.8 quarts of diesel fuel.

3. Air Cleaner – Prevents dirt and other debris from entering
the fuel system. Remove wing-nut on top of air filter
cannister to gain access to filter element.

4. Muffler – Used to reduce noise and emissions.

5. Recoil Starter (pull rope) – Type of engine starting method.
Alternate type would be electric start (ignition key).

PAGE 20 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

6. Recoil Starter – Housing for pull rope and starter.

7. Oil Filler Cap/Dipstick – Remove this cap to add oil to the
oil tank. Use dipstick to check oil level.

8. Oil Drain Plug – Unscrew plug to drain oil from engine
crankcase. Dispose of oil in a safe manner.

9. Decompression Lever – Press down before starting
engine. To prevent damage to the engine, DO NOT use for
any other purpose.

10. Fuel Cock – Controls the flow of diesel fuel to the engine.
Must be in the ON position when starting and running the
engine.

NOTE PAGE

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 21

MRH-800DS— INSPECTION

DANGER

NEVER operate the

compactorin a confined
area or enclosed area
structure that does not
provide ample

.

of air

ALWAYS wear approved eye and hearing

protection before operating the compactor.

Before Starting

1. Read safety instructions at the
beginning of manual.

2. Remove dirt and dust, particularly
in theengine cooling air inlet,
carburetor and air cleaner.

3. Check the air filter for dirt and dust.
If air filter is dirty, replace air filter
with a new one as required.

4. Check carburetor for external dirt and dust. Clean with dry
compressed air.

free flow

3. Insert and remove the dipstick without screwing it into the
filler neck. Check the oil level shown on the dipstick.

4. If the oil level is low, fill to the edge of the oil filler hole with the
recommended oil type (Table 3). Maximum oil capacity is

1.16 quarts (1.1 liters).

Checking The Hydraulic System

1. Check the oil tank level gauge (Figure 7). Oil level
should be at the middle indication of the gauge or
higher. Fill as required

2. Check the surroundings of the oil tank, hydraulic
pump and motor for oil leakage.

Level should
be middle of
gauge or
higher

Figure 7. Hydraulic System Oil Level Gauge

5. Check fastening nuts and bolts for tightness.

6. Understand the geographical features and regulations of
the job site.

Engine Oil Check

1. To check the engine oil level, place the compactor on secure
level ground with the engine stopped.

2. Remove the filler dipstick from the engine oil filler hole
(Figure 6) and wipe clean.

Figure 6. Engine Oil Level

EPYTLIO.4ELBAT

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DANGER

Checking The V-Belt

1. Remove the 2 bolts, one on each side of the center
cover, with a #13 socket wrench. Open the center
cover of the machine and support it with the strut by
inserting its end to the hole in the base (Figure 8).

2. Check V-belt for proper tension. Insufficient tension
causes weak vibration.

Center
Cover

Strut

V-Belt

ALWAYS keep hands and fingers away from

pinch points. DO NOT allow anyone to reach in
on dangerous sections of the machine to avoid
any accidents.

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PAGE 22 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

Figure 8. Checking V-Belt Tension

MRH-800DS— INSPECTION

Checking The Vibrator Oil Level

1. Check vibrator casing for any oil leakage.

2. If any leakage is noticed, remove the level plug on the side
of the plate (Figure 9).

3. Check the oil level.

Vibrator Oil
Level Plug

Figure 9. Checking Vibrator Oil Level

Fuel Check

1. Remove the fuel cap located on top of the engine fuel tank.

2. Visually inspect to see if the fuel level is low. If fuel is low,
replenish with unleaded gasoline using a strainer for
filtration. DO NOT top-off fuel. Wipe up any spilled fuel

immediately!

Checking Levers and Horn

1. Check travel, vibration, and throttle levers to make sure
they are functioning properly (Figure 4).

2. With travel lever placed in reverse, push the deadman
device and verify that the travel lever returns to neutral
position. The travel lever stays in neutral position once the
deadman device is released.

3. Press the horn and verify that it functions properly.

Checking Scrapers

1. Check scrapers and make sure that they are not clogged
with mud, bent or damaged (Figure 11).

2. Adjust clearance between drums and scrapers as
necessary.

DANGERDANGER

DANGER

DANGERDANGER

Motor fuels are highly
flammable and can be
dangerous if mishandled.

DO NOT smoke while
refueling. DO NOT attempt to refuel the pump
if the engine is

Checking Water Tank

1. Check the water tank to see if filled. Add water if necessary.
The water tank has a capacity of approximately 10 gallons
(40 liters) (Figure 10).

hot! or running

Figure 10. Checking Water Tank

.

CAUTION :

Scrapers

Figure 11. Checking Scrapers

Checking Bolts, Nuts and Screws

1. Check bolts, nuts, and screws on various parts of the
machine, including the engine, for proper tightness.

Positioning the Handle Bar

1. Release the handle bar release pin (Figure 12) and position
the handle bar to the lowered position before starting
operation.

2. When machine is not in use, release the handle bar release
pin and position the handle bar to the upright position.

Handle Bar
Release Pin

Be careful not to confuse the water tank with the
oil tank.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 23

Figure 12. Positioning the Handle Bar

MRH-800DS— INITIAL STARTUP

CAUTION :

DO NOT attempt to operate the roller until the Safety, General

Information and Inspection sections of this manual have been

read and thoroughly understood

This section is intended to assist the operator with the

start-up

be read carefully before attempting to use the compactor in the
field.

STARTING THE ENGINE

The engine can be started by motor (electric) or manually
(recoil). Refer to Figures 3 and 4 for the location of
controls and components.

of the roller. It is extremely important that this section

.

initial

CAUTION :

Make sure to follow all safety rules referenced in
the safety section of this manual before operating
roller. Keep work area clear of debris and other
objects that could cause damage to the roller or
bodily injury.

5. Insert the starter key into the key switch and turn it to
the RUN position (Figure 14). The buzzer should
sound at this time.

6 Turn the starter key further to the right to the START

position to start the engine. Buzzer stops sounding
when the engine speed increases. With safety switch
equipped, motor runs only when the travel lever is in
the neutral position.

Figure 14. Starter Key (Run Position)

CAUTION :

When the engine is running, NEVER turn the
starter key to the START position

Electric Start

1. On the control handle:
A. Move the
B. Move the
C. Move the

4. Open the fuel cock by turning it clockwise to the down
position (Figure 13).

throttle lever
travel lever

vibration lever

to the RUN position.

to the NEUTRAL position.

to the OFF position.

Fuel Cock
(Open
Position)

7. If the engine fails to start, DO NOT continue to rotate
the starter key for more than 5 seconds. Return the
key to the RUN position and wait 20 to 30 seconds
before starting again.

8. After starting the engine, continue to warm up the
engine for about 3 to 10 seconds especially in cold
weather.

9. If the buzzer does not stop sounding after the engine
has started, shutdown engine immediately and check
engine oil level. The buzzer functions as engine oil
level warning also.

Figure 15. Starter Key (Start Position)

Figure 13. Open Fuel Cock

PAGE 24 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

MRH-800DS— INITIAL STARTUP

Recoil Start

1. Move the throttle lever to the RUN position.

2. Open the fuel cock by turning it clockwise to the down
position (Figure 16).

Fuel Cock
(Open
Position)

5. Pull the starting handle hard and fast to start engine
(Figure 19).

Figure 19. Engine Start Handle

Figure 16. Open Fuel Cock

3. Pull the starting handle slowly until you feel some
resistance (Figure 17). Return handle to original
position.

Pull
Handle To
Start

Figure 17. Engine Start Handle

4. Push down the decompression lever (Figure 18).

6. If the engine does not start, repeat steps
3 through 5.

NOTE

When starting with a motor
starter, a decompressor is
not normally required.
However, when ambient
temperature or battery
charger level is low, use of
a decompressor will help
make the start-up easier.

Figure 18. Decompression Lever

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 25

MRH-800DS—OPERATION

TRAVELING

1. Before starting to travel, make sure to release parking brake
located on the left side of the rear roller. If the parking brake
lever is tight, moving the roller back and forth will make it
easier (Figure 20).

Parking
Brake
(Released
Position)

Figure 20. Parking Brake

2. With the throttle lever in the RUN position, increase
the engine rotation.

3. Push the travel lever forward slightly. This will cause
the roller to travel forward at slow speed.

4. To increase the travel speed, push the travel lever
further.

5. Travel speed can be varied between 0 and 3 km/h
(both forward and reverse).

6. Push the travel lever backward to go in the reverse
direction.

CAUTION :

DO NOT reduce speed during work. When

shifting travel lever from forward to reverse,
be sure to stop the lever at the neutral
position first before moving the lever to the
opposite direction. DO NOT shift the lever
from forward to reverse (or reverse to
forward) in one motion.

CAUTION :

After test travel, shut down engine and
check for any problems including oil
leakage. If any trouble is found, correct the
problem before attempting to operate the
roller again.

VIBRATING

1. Shift the vibration lever AWAY from its OFF position. The
vibration lever will automatically spring forward and the
roller will start vibrating (Figure 21).

CAUTION :

WATERING

1. For watering work, turn the water cocks clockwise, at the
rear of the machine, to start sprinkling. (Figure 22).

Watercock
for Front
Drum

Watercock
for Rear
Drum

Off Position of
Vibration Lever

Figure 21. Vibration Lever

Using vibration with clutch slipping causes
the clutch to burn. Also, vibration should
NOT be used over completely compacted
area, paved road surface, or with stationary
roller.

Figure 22. Water Cocks

PAGE 26 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

SAFETY FEATURES

MRH-800DS—OPERATION

1. A horn is provided to warn of approach.

2. The dead man device prevents accidental traveling
in reverse. It automatically makes the travel lever
return to neutral position by stopping the machine
when an object comes in contact with the dead man
device.

STOPPING

1. With travel lever in the NEUTRAL position, and the
vibration lever in the OFF position, return the throttle
lever to the START position. Allow the machine to
cool down for 3 to 5 minutes.

2. Push the throttle lever forward to stop the engine. In
a motor start, return the key switch to the STOP
position as soon as the engine stops.

Bypass
Valve
Bolt

CAUTION :

CAUTION :

Neglecting to return the key switch to the
STOP position will cause the battery to
discharge making start up impossible the
next time.

3. After the engine stops, close the fuel cock.

4. Lock the parking brake by pulling the brake lever
and rotating it 90 degrees clockwise.

Parking brake system should

NOTE

always be kept clean to avoid
mud deposits.

LIFTING

1. Use a crane or lift to load and unload the machine. A
skilled crane operator is required to perform the job.

2. When lifting the machine, check for any damaged or
loose bolts, lifting hooks, and shock mounts.

3. Check any damaged or loose bolts in the guard frame to
avoid machine sliding off.

4. Make sure that the machine is shut off before machine is
lifted.

5. Use reliable cable for lifting.

6. ALWAYS lift the machine vertically and keep the
machine away from workers and animals.

Figure 23. Location of Bypass Valve Bolt

NEVER tow roller with any type of vehicle.

Doing so will damage the hydraulic system.
NEVER perform unloading procedure on a

slope. This may cause roller to roll down if
parking brake or blocking is deficient.

7. DO NOT lift the machine higher than the required

UNLOADING

1. If you need to move the roller by pushing it manually
once engine is stopped, loosen bolt of bypass valve
on oil pump by one rotation counterclockwise. This
will cause the hydraulic break to disengage and allow
the roller to be moved more easily (Figure 23).

2. After moving, tighten the bolt again. Tightening torque
is 55 to 70 kgf-cm.

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 27

height.

TRANSPORTING

1. Always make sure that the machine is shut off while
being transported.

2. Check that the fuel cap is properly closed and
tightened.

3. When traveling long distances or on rugged terrain,
drain the fuel of the machine before transporting.

4. Tie down the machine securely on the
transportation so that it will not move or topple over.

MRH-800DS—MAINTENANCE

CAUTION:

Inspection and other services should ALWAYS
be carried out on hard and level ground with the
engine shutdown.

Inspection and Maintenance Service Tables.

1. To make sure your plate compactor is always in good
working condition before using, carry out the maintenance
inspection in accordance with Tables 5 through 7.

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CAUTION:

Fuel piping and connections should be replaced
every 2 years.

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CAUTION:

These inspection intervals are for operation
under normal conditions. Adjust your inspection
intervals based on the number of hours the roller
is in use, and your particular working conditions.

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Daily Service

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Check for leakage of fuel or oil.

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Check for loose screws including tightness. See Table 7
below (tightening torque ), for retightening:

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~003

* 001

z

Remove soil and clean the bottom of compaction plate.

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Check hydraulic pump, piping and hose for any leakage.

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A loosened hydraulic hose can be a cause for leakage.
Check hydraulic hose connections with wrench applied for
tightness.

z

Check engine oil.

PAGE 28 — MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05)

CLUTCH
PULLEY

VIBRATOR
PULLEY

MRH-800DS—MAINTENANCE

Engine Oil Replacement:

1. Replace engine oil in the first 25 hours of operation and
every 50 to 100 hours afterwards.

2. Oil may be drained more easily when it is warm after
operation (For more details, see separate engine Owner's
Manual).

Air Filter

1. The air filter element should be cleaned because a clogged
air cleaner can cause poor engine starting, lack of power
and shorten engine life substantially.

CAUTION:

CAUTION :

Figure 24. Engine Air Filter and Element

2. To clean or replace air filter loosen the wing nut on the air
filter housing (Figure 24) remove the cover and take out air
filter cartridge. If only cleaning of the air filter is desired blow
through the air filter cartridge from the inside, moving a jet of
dry compressed air up and down until all dust is removed.

VIBRATION CLUTCH ADJUSTMENT

1. Move vibration lever to the OFF position.

2. Loosen the front and rear nuts at the end of vibration clutch
cable (Figure 25).

3. Turn in the nut on the front side again and at the position
that release fork starts to move, turn in the nut by one or two
threads. Lock it a this position together with the rear nut.

HYDRAULIC SYSTEM INSPECTION AND SERVICE

1. Check motor and pump for any damage.

2. Check hoses and pipes for proper tightness and make sure
there are no leaks.

3. Check nylon tubes for hydraulic oil intake and drain.
Retighten brass nut if loose and if a leak is detected. If leak
continues after retightening, replace nylon tube, nut and
sleeve.

NEVER attempt to check the V-belt with the en­gine running. Severe injury can occur if your hand
gets caught between the V-belt and the clutch
(Figure 26). Always use safety gloves.

Figure 26. V-Belt Hazard

Excessive turning of front nut may cause the
sliding engagement of clutch to take place or
no vibration takes place even when vibration
lever is engaged.

On the other hand, insufficient turn may cause
sliding engagement of clutch even when the
vibration lever is placed in the OFF position or
for vibration to remain engaged.

4. Check oil tank for proper oil level using the hydraulic system
oil level gauge (See Figure 7). Make sure hydraulic oil has
not whitened or emulsified. Whitish color means aeration in

Rear Nut

Fork

Front Nut

Figure 25. Vibration Clutch Adjustment

MQ-MIKASA MRH-800DS VIBRATION ROLLER — PARTS & OPERATION MANUAL — REV. #3 (02/02/05) — PAGE 29

pump. Retighten pipe and correct level of oil. Emulsification
means water in the hydraulic oil. Replace the oil.

ROLLER INSPECTION AND ADJUSTMENT

1. Refer to Table 8 for oil and grease requirements.

2. Check oil tank level daily.

3. Check the machine for oil leak and proper function of lever,
cables, and links daily.