Multiquip MT85HS User Manual

PARTS AND OPERATION MANUAL

OPERATION AND PARTS MANUAL

MODEL MT85HS

TAMPING RAMMER

(ROBIN

SERIES

EC12HS

Revision #9 (01/16/12)

To find the latest revision of this

publication, visit our website at:

www.multiquip.com

GASOLINE ENGINE)

PROPOSITION 65 WARNING

PAGE 2 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

NOTES

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/TECHNICAL ASSISTANCE

800-478-1244 or 310-537-3700
FAX: [phone]

WARRANTY DEPARTMENT

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

MAIN

800-421-1244 or 310-537-3700
FAX: [phone]

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 3

TABLE OF CONTENTS

MT85HS Rammer

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

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

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

Safety Information ..............................................6-9

General Information ............................................ 10

Specifications ...................................................... 11

Components........................................................ 12

Operation .......................................................13-15

Maintenance ..................................................16-17

Troubleshooting .............................................18-19

Explanation Of Codes In Remarks Column ........ 20

Suggested Spare Parts ....................................... 21

Component Drawings

Name Plate and Decals .................................22-23

Crankcase and Engine Assembly ..................24-25

Cylinder Guide and Foot Assembly ...............26-27

Tank and Handle Assembly ........................... 28-31

Robin EC12HS Engine

Crankcase and Cylinder Assembly ............... 32-33

Crankshaft and Piston Assembly .................. 34-35

Governor Assembly .......................................36-37

Muffler & Air CleanerAssembly ......................38-39

Carburetor and Oil Pump Assembly ..............40-41

Recoil Starter and Blower Assembly .............42-43

Magneto Assembly ..................................... 44-45

Loose Parts Assembly ...................................46-47

Terms and Condition of Sale

— Parts ..................... 48

NOTICE

Specification and part number are subject to
change without notice.

PAGE 4 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

PARTS ORDERING PROCEDURES

r

Ordering parts has never been easier!

Choose from three easy options:

January 1

Effective:

st

, 2006

Best Deal!

Order via Internet (Dealers Only):

Order parts on-line using Multiquip’s SmartEquip website!

■ View Parts Diagrams

■ Order Parts

■ Print Specification Information

Goto www.multiquip.com and click on

Order Parts

Order via Fax (Dealers Only):

All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)

Non-Dealer Customers:
Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.

to log in and save!

Order via Phone:

If you have an MQ Account, to obtain a Username
and Password, E-mail us at: parts@multiquip.

com.

To obtain an MQ Account, contact you
District Sales Manager for more information.

Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*

Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*

Domestic (US) Dealers Call:

1-800-427-1244

International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.

Note: Discounts Are Subject To Change

Note: Discounts Are Subject To Change

When ordering parts, please supply:

❒ 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

NOTICE

All orders are treated as Standard Orders and will

ship the same day if received prior to 3PM PST.

❒ Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓ DHL

■ Priority One ✓ Tr uck

■ Ground

■ Next Day

■ Second/Third Day

www.multiquip.com

WE ACCEPT ALL MAJOR CREDIT CARDS!

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 5

SAFETY INFORMATION

Do not operate or service the equipment before reading
the entire manual. 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.

SAFETY MESSAGES

The four 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 four words:

DANGER, WARNING, CAUTION or NOTICE.

SAFETY SYMBOLS

DANGER

Indicates a hazardous situation which, if not avoided,

WILL result in DEATH or SERIOUS INJURY.

WARNING

Potential hazards associated with the operation of this
equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.

Indicates a hazardous situation which, if not avoided,

COULD result in DEATH or SERIOUS INJURY.

CAUTION

Indicates a hazardous situation which, if not avoided,
COULD result in MINOR or MODERATE INJURY.

NOTICE

Addresses practices not related to personal injury.

PAGE 6 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

SAFETY INFORMATION

.

GENERAL SAFETY

CAUTION

 NEVER operate this equipment without proper protective

clothing, shatterproof glasses, respiratory protection,
hearing protection, steel-toed boots and other protective
devices required by the job or city and state regulations.

 NEVER operate this equipment when not

feeling well due to fatigue, illness or when
under medication.

 NEVER operate this equipment under the influence of

drugs or alcohol.

 ALWAYS check the equipment for loosened threads or

bolts before starting.

 DO NOT use the equipment for any purpose other than

its intended purposes or applications.

NOTICE

 This equipment should only be operated by trained and

qualified personnel 18 years of age and older.

 Whenever necessary, replace nameplate, operation and

safety decals when they become difficult read.

 Manufacturer does not assume responsibility for any

accident due to equipment modifications. Unauthorized
equipment modification will void all warranties.

 NEVER use accessories or attachments that are not

recommended by Multiquip for this equipment. Damage
to the equipment and/or injury to user may result.

 ALWAYS know the location of the nearest phone or keep a

phone on the job site. Also, know the phone numbers of

the nearest ambulance, doctor and fire department. This
information will be invaluable in the case of an emergency.

RAMMER SAFETY

DANGER

 NEVER operate the equipment in an explosive

atmosphere or near combustible materials. An
explosion or fire could result causing severe

bodily harm or even death.

WARNING

 NEVER disconnect any emergency or safety devices.

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.

 DO NOT use this machine on ground that is harder than

the machine can handle, or for driving pilings or tamping
rock beds. Furthermore, use of the machine on sloping
ground, such as the side of an embankment, may make
the machine unstable and can cause an accident. It can
also result in premature machine wear due to uneven
loads on the machine.

Use the machine with confidence for tamping earth and

sand, soil, gravel, and asphalt. DO NOT use the machine
for other types of jobs.

CAUTION

 NEVER lubricate components or attempt service on a

running machine.

NOTICE

 ALWAYS know the location of the nearest

fire extinguisher.

 ALWAYS know the location of the nearest

first aid kit.

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 7

 ALWAYS keep the machine in proper running condition.

 Fix damage to machine and replace any broken parts

immediately.

 ALWAYS store equipment properly when it is not being

used. Equipment should be stored in a clean, dry location
out of the reach of children and unauthorized personnel.

SAFETY INFORMATION

k

ENGINE SAFETY

DANGER

 The engine fuel exhaust gases contain poisonous carbon

monoxide. This gas is colorless and odorless, and can
cause death if inhaled.

 The engine of this equipment

requires an adequate free flow
of cooling air. NEVER operate
this equipment in any enclosed
or narrow area where free flow
of the air is restricted. If the air
flow is restricted it will cause
injury to people and property
and serious damage to the
equipment or engine.

WARNING

 DO NOT place hands or fingers inside engine

compartment when engine is running.

 NEVER operate the engine with heat shields or

guards removed.

 DO NOT remove the engine oil drain plug

while the engine is hot. Hot oil will gush
out of the oil tank and severely scald any
persons in the general area of the rammer.

CAUTION

FUEL SAFETY

DANGER

 DO NOT add fuel to equipment if it is placed inside truc

bed with plastic liner. Possibility exists of explosion or
fire due to static electricity.

 DO NOT

fluids. Fuel is extremely flammable and its vapors can
cause an explosion if ignited.

 ALWAYS refuel in a well-ventilated area, away from

sparks and open flames.

 ALWAYS use extreme caution when working with

flammable liquids.

start the engine near spilled fuel or combustible

 NEVER touch the hot exhaust manifold,

muffler or cylinder. Allow these parts to cool
before servicing equipment.

NOTICE

 NEVER run engine without an air filter or with a dirty air

filter. Severe engine damage may occur. Service air filter
frequently to prevent engine malfunction.

 NEVER tamper with the factory settings

of the engine or engine governor. Damage
to the engine or equipment can result
if operating in speed ranges above the
maximum allowable.

PAGE 8 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

 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 appropriate containers, in well-ventilated

areas and away from sparks and flames.

 NEVER use fuel as a cleaning agent.

 DO NOT smoke around or near the

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

TRANSPORTING SAFETY

CAUTION

 NEVER allow any person or animal to stand underneath

the equipment while lifting.

NOTICE

 Before lifting, make sure that the equipment parts (hook

and vibration insulator) are not damaged and screws are
not loose or missing.

 Always make sure crane or lifting device has been

properly secured to the lifting bail (hook) of the
equipment.

 ALWAYS shutdown engine before transporting.

 NEVER lift the equipment while the engine is running.

 Tighten fuel tank cap securely and close fuel cock to

prevent fuel from spilling.

SAFETY INFORMATION

 Use adequate lifting cable (wire or rope) of sufficient

strength.

 Use one point suspension hook and lift straight

upwards.

 DO NOT lift machine to unnecessary heights.

 ALWAYS tie down equipment during transport by

securing the equipment with rope.

 Never allow any person or animal to stand underneath the

equipment while lifting.

ENVIRONMENTAL SAFETY

NOTICE

 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.

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 9

Definition of Tamping Rammer

The Mikasa MT-85HS Tamping Rammer 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 MT-85HS levels and uniformly compacts
voids between soil particles to increase dry density.

Circular motion is converted to create impact force. The MT­85HS tamping rammer develops a powerful compacting force at
the foot of the rammer. To maintain optimum performance, proper
operation and service are essential.

Construction of Tamping Rammer

The Mikasa MT-85HS is equipped with an Robin air cooled, oil­injected two cycle gasoline engine. Transmission of the power
takes place by increasing the engine speed to engage the
centrifugal clutch.

Rammer Gearbox and Spring Cylinder

The Mikasa MT-85HS uses an oil bath lubrication system. Always
check the oil level through the oil level sight glass at the rear of
the tamper foot.

GENERAL INFORMATION

Controls

Before starting the MT-85HS Tamping Rammer identify and
understand the function of the controls, see Figure 1.

PAGE 10 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

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Specifications are general and are subject to change without notice. If exact
measurements are required, equipment should be weighed and measured.

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 11

COMPONENTS

Figure 1. MT-85HS Rammer

Figure 1 shows the location of the controls and components
for the MT-85HS Tamping Rammer. The functions of each
control is described below:

1. Throttle Lever – Controls engine speed and the tamping

action of the rammer.

2. Engine Stop Switch – Controls the starting and stopping
of the engine. Switch must be in the "ON" position when
starting the engine.

3. Choke Lever – Used when starting the engine. Normally
used in cold weather conditions. In cold weather turn the
choke lever to the fully closed position, in warm weather

8. Foot– Laminated wood with tempered steel plate for

superior shock absorption.

9. Oil Level Sight Glass – Indicates the level of oil in the oil
bath reservoir.

10. Recoil Star ting Handle – Used when starting the engine.
Pull starter handle sharply and quickly, then return
starter handle to starter case before releasing.

11. Fuel Tank/Cap – Poly fuel tank to avoid rust and
corrosion, remove this cap to add gasoline.

12. Engine Air Cleaner – Prevents dirt (second stage) and
other debris from entering the engine.

set choke lever half way or completely open.

13. Bellows – Reservoir for oil bath.

4. Fuel Shut-Off Valve – Supplies fuel from the fuel tank to
the engine. To begin fuel flow move the fuel shut-off valve
downward.

5. Oil Bath Fill Plug – Open this plug to add oil to the oil
bath reservoir.

6. Drain Valve – Open this valve to remove oil from the

L1. A Returned Material Authorization must be approved by Multiquip prior to shipment. A copy of the Authorization must

accompany the shipment to the designated Warehouse. A copy of the original Multiquip invoice to the customer must

bellows.

also accompany the shipment.

7. Pre- Cleaner – Pre-cleans (first stage) dirt and other
debris from entering the engine.

8. Foot– Laminated wood with tempered steel plate for

superior shock absorption.

14. Handle – To operate rammer
firmly on both sides.

15. Muffler– Used to reduce noise and emissions.

16. Spark Plug – Provides spark to the ignition system,
replace with engine manufactures recommended type
spark plug.

17. Name Plate – Displays information regarding the rammer.

18. Roller Bar – Used when transporting rammer onto a
truck bed. Place rammer on this roller bar then slide.

19. Oil Tank – Fill oil tank with 2-stroke motor oil.

GRIP

handle assembly

PAGE 12 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

OPERATION

This section is intended to assist the operator with the initial
start-up of the MT-85HS Tamping Rammer. It extremely important
that this section be read carefully before attempting to operate
the rammer.

DO NOT use your rammer until this section is thoroughly
understood.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Failure to understand the operation of the MT­60HS Tamping Rammer could result in severe
damage to the trowel or personal injury.

Rammer Gearbox and Spring Cylinder Oil Bath

This unit uses an oil bath lubrication system. Perform the following:

1. Check the oil level through the oil level sight glass (Figure 2)
at the rear of the tamper foot.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Engine

1. Fill the fuel tank (Figure 3 ) with unleaded gasoline. At the
same time, check the engine oil level at the sight gauge
located on the operator's side of the oil tank. Fill the oil tank
to the "H" level using only outboard (2-stroke) oil. Replenish
the oil regularly before the oil level reaches the "L" level of the
oil tank.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Failure to understand the operation of the MT­60HS Tamping Rammer could result in severe
damage to the rammer or personal injury.

The oil hose is not to be depressed or
damaged. A sensor detects lack of oil and
shuts down the engine automatically.

Figure 2. Foot Housing Sight Glass

2. If oil is not visible, add 10W-30 motor oil into the oil fill plug
opening (Figure 2). The bath contains approximately 1.7
pints (800 cc.)

NOTE

The oil level should be kept at the half
way point of the sight glass.

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 13

2. Low levels of oil may result in engine seizure due to high
levels of consumption during operations.

3. Check the engine oil level (Figure 4) and if the oil level is
low, it should be refilled. Use the proper motor oil as
suggested in Table 3 .

Figure 3. Fuel/Oil Tank

Figure 4. Engine Oil Dipstick

OPERATION

2. Set the engine ON/OFF switch (Figure 6) to the "ON"

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Inspection

1 . Check all nuts, bolts fasteners for tightness. Retighten as

necessary.

2. Clean any dirt from the recoil starter and foot pedestal. Wipe
the entire unit clean before operating.

3. Close the choke lever (Figure 5) and move the throttle lever

3. Replace any missing or damaged Safety Operation decals.

4. Adjust height of handle. Adjust handle by loosening nuts and
moving handle to suit operation. Retighten nuts.

(Figure 9) to the "Full Open" position. Turning the choke
lever 90 degrees clockwise closes the choke . In cold weather,
start the unit with choke fully closed. In warm weather or when
the engine is warm, the unit can be started with choke halfway

Initial Start-up

When starting the MT-85HS Tamping Rammer perform the
following:

1. Open the fuel shut- off val ve by moving the

open

to the

position (Figure 5).

fuel cock

lever

or completely open.

4. Grip the recoil starter (Figure 7) handle and pull it until you
feel a slight resistance. Then pull sharply and quickly. Return
the recoil starter handle to the starter position before releas­ing.

Figure 6. Engine On/Off Switch

Figure 7. Recoil Starter

5. If engine fails to start, move the choke lever (Figure 5) to the
half open position to avoid flooding.

6. Repeat steps 1 thru 5.

7. If the engine does not start after repeated attempts,
check the spark plug for excess fuel. Clean and replace
the spark plug as needed.

Figure 5. Fuel Cock and Choke Lever

PAGE 14 — MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12)

OPERATION

7. If the carburetor is flooded or the crankcase is loaded with
excess fuel, open the drain plug as shown in (Figure 8) and
drain out excess fuel.

Figure 8. Drain Plug

Operation

1. To start the rammer tamping action, move the throttle lever
(Figure 9) quickly from IDLE (close) to the FULL OPEN
position . DO NOT move the throttle lever slowly as this may
cause damage to the clutch or spring.

Stopping The Engine

Normal Shutdown

1. Move throttle lever quickly from the FULL OPEN to IDLE
position (Figure 9) and run the engine for three minutes at
low speed. After the engine
switch to the “OFF” position (Figure 6) until engine comes
to a complete stop.

2. Close the fuel shut- off valve by moving the fuel cock lever to
the CLOSED position. See Figure 5

Emergency Showdown

1. Move the throttle lever quickly to the
the engine ON/OFF switch (Figure 6) to the

cools

, turn the engine

IDLE

start/stop

position, and turn

STOP

position.

CAUTION:CAUTION:

CAUTION:

CAUTION:CAUTION:

Make sure that the throttle lever is moved to the
FULL OPEN position. Operating the rammer at
less than full speeds can result in damage to
the clutch springs or foot

Figure 9. Throttle Lever

2. The MT-85HS Tamping rammer is designed to run at 5,000
rpm. At optimum rpm the foot hits at the rate of 690 impacts
per minute. Increasing throttle speed past factory set rpm
does not increase impacts and may damage unit. The MT­85HS is designed to advance while tamping. For faster
advance, pull back slightly on the handle so that rear of foot
contacts soil first.

MT85HS RAMMER — OPERATION AND PARTS MANUAL — REV. #9 (01/16/12) — PAGE 15