MQ Mikasa MT55F User manual

OPERATION MANUAL
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
Revision #6 (10/01/20)
SERIES
MODEL MT55F
TAMPING RAMMER
(ROBIN EH090D/EH092D GASOLINE ENGINES)
To find the latest revision of this publication or
associated parts manual, visit our website at:
www.multiquip.com

PAGE 2 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
PROPOSITION 65 WARNING

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 3
MT55F Tamping
Rammer
Proposition 65 Warning .............................................2
Table Of Contents .....................................................3
Safety Information ................................................. 4-7
General Information ..................................................8
Specifications ............................................................9
Controls and Components ......................................10
Basic Engine ...........................................................11
Operation .......................................................... 12-15
Maintenance ...........................................................16
Troubleshooting Guide ...................................... 18-19
TABLE OF CONTENTS
Specification and part number are subject to
change without notice.
NOTICE

PAGE 4 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
Lethal Exhaust Gases
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
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.
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.

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 5
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
fire extinguisher.
ALWAYS know the location of the nearest
first aid kit.
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 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.

PAGE 6 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
SAFETY INFORMATION
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
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.
FUEL SAFETY
DANGER
DO NOT add fuel to equipment if it is placed inside truc
k
bed with plastic liner. Possibility exists of explosion or
fire due to static electricity.
DO NOT start the engine near spilled fuel or combustible
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.
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.

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 7
SAFETY INFORMATION
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.
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.

PAGE 8 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
Definition of Tamping Rammer
The Mikasa MT55F 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 road, embankments and reservoirs as
well as backfilling for gas pipelines, water pipelines and cable
installation work.
The impact force of the MT55F levels and uniformly compacts
voids between soil particles to increase dry density.
Circular motion is converted to create impact force. The
MT55F 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 MT55F is equipped with an air cooled, 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 MT55F uses an oil bath lubrication system.
Always check the oil level through the oil level sight glass at
the rear of the tamper foot.
Controls
Before starting the MT55F Tamping Rammer identify and
understand the function of the controls, see Figure 1 on
page 13.
Handle Operation
CAUTIONCAUTION
CAUTIONCAUTION
CAUTION
Before starting operation check the lifting
handle to:
1. Make sure that there is no damage on the bolts.
2. Make sure that there is no crack or breakage on handle.
3. Make sure that there is no fissure on the surface. If there
is any abnormality or damage, replace with new one.
For operation:
This handle is to be used to lift up the shoe part of the machine
with the body laid down on the ground or truck bed.
1. Use proper lifting techniques to avoid back injury. This
handle is for manual lifting only.
2. Do not use this handle as a rammer lift point. Use the
lifting point on the top of the machine.
3. Do not move the rammer with the lifting handle and the
front rollers more than (16 feet) 5 meters.
GENERAL INFORMATION

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 9
NOTE Specifications are general and are subject to change without notice. If exact
measurements are required, equipment should be weighed and measured.
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SPECIFICATIONS

PAGE 10 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
Figure 1 shows the location of the controls and components
for the MT55F Tamping Rammer.The functions of each control
is described below:
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
also accompany the shipment.
1. Throttle Lever – Used to adjust engine speed (rpm). Move
lever forward
(SLOW) to reduce engine speed, move lever
back toward operator
(FAST ) to increase speed.
2. Fuel Shut-OffValve – Supplies fuel from the fuel tank to
the engine.To begin fuel flow move the fuel shut-off valve
downward.
3. Oil Bath Fill Plug – Open this plug to add oil to the oil
bath reservoir.
4. Drain Valve – Open this valve to remove oil from the
bellows.
5. Primary Air Cleaner – Pre-cleans (first stage) dirt and
other debris from entering the engine.
6. Foot– Laminated wood with tempered steel plate for
superior shock absorption.
7. Oil Level Sight Glass – Indicates the level of oil in the oil
bath reservoir.
Figure 1. MT55F Rammer
8. FuelTank/Cap –Remove this cap to add unleaded gaso-
line to the fuel tank.Make sure cap is tightened securely.DO
NOT over fill.
9. Bellows – Reservoir for oil bath.
10. Handle – To operate rammer GRIP handle assembly
firmly on both sides.
11. Nameplate – Displays information regarding the rammer.
12. Engine Air Cleaner – Prevents dirt (second stage) and
other debris form entering the engine.
13. Muffler – Used to reduce noise and emissions.
CAUTION - Fueling The Engine
Adding fuel to the tank should be done only
when the engine is stopped and has had an
opportunity to cool down. In the event of a fuel
spill, DO NOT attempt to start the engine until
the fuel residue has been completely wiped up,
COMPONENTS

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 11
Figure 2. Engine Controls and Components
INITIAL SERVICING
The engine (Figure 2) must be checked for proper lubrication and
filled with fuel prior to operation. Refer to the manufacturers Engine
manual for instructions & details of operation and servicing.
1. Secondary 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.
2. 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
set choke lever half way or completely open.
3. Spark Plug – Provides spark to the ignition system. Set
spark plug gap to 0.02 - 0.03 inch (0.6 - 0.7 mm). Clean
spark plug once a week.
4. Engine ON/OFF Switch – Controls the starting and
stopping of the engine. Switch must be in the "ON" position
when starting the engine.
7. Dipstick/Oil Filler Cap – Remove this cap to determine if
the engine oil is low. Add oil through this filler port as
recommended in Table 3.
8. Oil Drain Plug – Remove this plug to remove oil from the
engine's crankcase.
5. Recoil Starter (pull rope) – Manual-starting method. Pull
the starter grip until resistance is felt, then pull briskly and
smoothly.
6. Muffler – Used to reduce noise and emissions.
Operating the engine without an
air filter, with a damaged air filter,
or a filter in need of replacement
will allow dirt to enter the engine,
NOTE
Engine components can generate extreme heat.
To prevent burns, DO NOT touch these areas
while the engine is running or immediately after
operating. NEVER operate the engine with the
muffler removed.
CAUTION - Burn Hazard
BASIC ENGINE

PAGE 12 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
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 3)
at the rear of the tamper foot.
This section is intended to assist the operator with the initial
start-up of the MT55F 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.
Engine Oil Check
1. To check the engine oil level, place the rammer on secure
level ground with the engine stopped.
2. Remove the filler cap/dipstick from the engine oil filler hole
(Figure 5) and wipe it clean.
Figure 3. Foot Housing Sight Glass
2. If oil is not visible, add 10W-30 SE, SF or higher grade motor
oil into the oil fill plug opening (Figure 3).The bath contains
approximately 1.0 pints (520 cc.)
Figure 4. Fuel Tank
Fuel
1. Fill the fuel tank (Figure 4) with unleaded gasoline. DO NOT
overfill, wipe up spilled fuel immediately.
Figure 5. Engine Oil Dipstick
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 (Figure 6), fill to the edge of the oil filler
hole with the recommended oil type (Table 3).Maximum oil
capacity is .079 gallons (0.3 liters)
DO NOT attempt to operate the Tamping
Rammer until the Safety, General
Information and Inspection sections of this
manual have been
read and thoroughly
understood
.
CAUTION - Read Manual
The oil level should be kept at the half
way point of the sight glass.
NOTE
OPERATION

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 13
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. 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 8. On Off Switch
Figure 7. Fuel Shut-Off Valve (ON)
2. Set the engine ON/OFF switch (Figure 8) to the "ON"
position (start).
3. Move the throttle lever to the "IDLE" position (Figure 9).
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Initial Start-up
When starting the MT55F Tamping Rammer perform the
following:
1. Open the fuel shut- off valve by moving the fuel cock
lever to the open position (Figure 7).
OPERATION

PAGE 14 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
Figure 9. Throttle Lever (Idle)
Figure 10. Choke Lever (Closed)
Figure 11. Recoil Starter
4. In cold weather, start the unit with choke lever "Fully
Closed"(Figure 10). In warm weather or when the engine is
warm, the unit can be started with choke halfway or com-
pletely
open .
5. Grip the recoil starter (Figure 11) handle and pull it until you
feel a slight resistance.Then pull sharply and quickly.Return
the recoil starter handle to the starter case before releasing.
6. If engine fails to start, move the choke lever (Figure 10) to the
half open position to avoid flooding.
7. Repeat steps 1 thru 6.
8. If the engine does not start after repeated attempts,
check the sparkplug forexcess fuel.Clean and replace
the spark plug as needed.
Operation
1. To start the rammer tamping action, move the throttle lever
(Figure 12)
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.
Figure 12. Throttle Lever (Full Open)
OPERATION

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 15
2. Close the fuel shut- off valve (Figure 15) by moving the fuel
cock lever to the CLOSED position.
Emergency Showdown
1. Move the throttle lever quickly to the IDLE position, and turn
the engine start/stop switch to the
OFF position. Turn fuel
valve lever to the
CLOSED position.
Figure 15. Fuel Shut-OFF Valve (Off Position)
Figure 14. ON/OFF Switch (Off Position)
2. After the engine cools , turn the engine start/stop switch to the
“OFF” position (Figure 14).
2. The MT55F Tamping rammer is designed to run at 3,600 rpm.
At optimum rpm the foot hits at the rate between 600 ~ 695
impacts per minute. Increasing throttle speed past factory
set rpm does not increase impacts and may damage unit.The
MT55F is designed to advance while tamping. For faster
advance, pull back slightly on the handle so that rear of foot
contacts soil first.
Figure 13. Throttle Lever (Idle)
Stopping The Engine
Normal Shutdown
1. Move throttle lever quickly from the FULL OPEN to IDLE
position (Figure 13) and run the engine for three minutes at
low speed.
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
CAUTION -Throttle Lever
OPERATION

PAGE 16 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
Maintenance
Perform the scheduled maintenance procedures as indicated:
DAILY
■ Thoroughly remove dirt and oil from the engine and control
area. Clean or replace the air cleaner elements as necessary.
Check and retighten all fasteners as necessary. Check the
spring box and bellows for oil leaks. Repair or replace as
needed.
WEEKLY
■ Remove the fuel filter cap and clean the inside of the fuel
tank.
■ Remove or clean the filter at the bottom of the tank.
■ Remove and clean the spark plug, then adjust the spark gap
to 0.02~0.03 inch (0.6~0.7 mm). This unit has electronic
ignition, which requires no adjustments.
■ Clean air cleaner cover.
200 - 300 HOURS (Pre-Cleaner)
■ Remove the element from the pre-cleaner (Figure 16) at the
top of the crankcase (body side) and clean it with cleaning oil
(kerosene).
Figure 16. Primary Air Filter
■ Lubricate the top element (yellow) with 2~5 cc of engine oil
SAE-30.
■ Lubricate bottom element (gray) with 7~9 cc of engine oil
SAE-30 and completely squeeze out the excess oil from the
element before installing.
■ The air cleaner (Figure 17 ) on the engine side will hardly be
contaminated, if it is, clean the outer foam gray element with
cleaning solvent. Tightly squeeze outer foam element to
remove any excess solvent before re-installing.
200 - 300 HOURS (Oil Bath)
■ Drain oil reservoir on foot housing (Figure 18). Refill with
approximately 1.0 pt. (520 cc.) of 10W-30 SE, SF or higher
grade motor oil. Oil should be midway in sight glass. Break in
oil should be changed after first 50 hours.
Figure 17. Engine Air Cleaner
Yearly
■ Check the fuel line and the oil line regularly for damage and
to ensure that there are no leaks.
■ Replace the oil and fuel lines every two years to maintain the
performance and flexibility lines.
Long Term Storage
■ Drain fuel from fuel tank, fuel line and carburetor.
■ Remove spark plug and pour a few drops of motor oil into
cylinder. Crank engine 3 to 4 times so that oil reaches all
internal parts.
■ Clean exterior with a cloth soaked in clean oil.
■ Store unit covered with plastic sheet in moisture free and
dust free location out of direct sunlight
Figure 18. Foot Housing Drain Plug
■ Tap the paper filter element (Figure 17 ) several times on a
hard surface to remove dirt, or blow compressed air [not
exceeding 30 psi (207 kPa, 2.1 kgf/cm2)] through the filter
element from the air cleaner case side.
NEVER brush off dirt.
Brushing will force dirt into the fibers. Replace the paper filter
element if it is excessively dirty.
GRAY OUTER
FOAM ELEMENT
CLEAN WITH
KEROSENE
PAPER
ELEMENT
CLEAN WITH
COMPRESSED
AIR
MAINTENANCE

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 17
NOTES

PAGE 18 — MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20)
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TROUBLESHOOTING

MT55F RAMMER — OPERATION MANUAL — REV. #6 (10/01/20) — PAGE 19
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TROUBLESHOOTING

OPERATION MANUAL
Your Local Dealer is:
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
UNITED STATES
Multiquip Inc.
(310) 537- 3700
6141 Katella Avenue Suite 200
Cypress, CA 90630
E-MAIL: [e-mail]
WEBSITE: www.multiquip.com
CANADA UNITED KINGDOM
Multiquip Multiquip (UK) Limited Head Office
[phone]
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
E-MAIL: [e-mail]
0161 339 2223
Unit 2, Northpoint Industrial Estate,
Globe Lane,
Dukinfield, Cheshire SK16 4UJ
E-MAIL: [e-mail]
© COPYRIGHT 2020, MULTIQUIP INC.
Multiquip Inc
, the MQ logo and the Mikasa logo
are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks
are the property of their respective owners and used with permission.
This manual
MUST accompany the equipment at all times. This manual is considered a permanent part of the equipment and should remain with the unit if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this manual are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.