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.
The following safety guidelines should always be used when
operating the MT-60HS Tamping Rammer:
GENERAL SAFETY
■
DO NOT operate or service thisequipment 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, steel-toed
boots and other protective devices required by the
job.
NEVER touch the hot exhaust
manifold, muffler or cylinder.
Allow these parts to cool before
servicing engine or rammer.
■
High Temperatures – Allow the engine to cool before
adding fuel or performing service and maintenance
functions. Contact with
■
The engine section of this rammer requires an adequate
free flow of cooling air. Never operate the rammer in any
enclosed or narrow area where free flow of the air is
hot
components can cause serious
restricted. If the air flow is
restricted it will cause serious
damage to the rammer or
engine and may cause injury
to people. Remember the
rammer's engine gives off
DEADLY carbon monoxide
gas.
■
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.
■
Manufacture 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 check the machine for loosened threads or bolts before
starting.
■
Always refuel in a well-ventilated area, away from sparks
and open flames.
■
NEVER operate the rammer in an explosive atmosphere or
near combustible materials. An explosion or fire could result
causing severe
■
Always use extreme caution when
working with flammable liquids. When
refueling, stop the engine and allow it
to cool. DO NOT
the machine. Fire or explosion could
result from fuel vapors, or if fuel is spilled
on a hot engine.
The Mikasa MT-60HS 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-60HS levels and uniformly compacts
voids between soil particles to increase dry density.
Circular motion is converted to create impact force. The MT60HS 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-60HS 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
GENERAL INFORMATION
The Mikasa MT-60HS 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 MT-60HS Tamping Rammer identify and
understand the function of the controls, see Figure 1 on page 11.
Figure 1 shows the location of the controls and components
for the MT-60HS 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
set choke lever half way or completely open.
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
bellows.
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.
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 Starting 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.
13. Bellows – Reservoir for oil bath.
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.
This section is intended to assist the operator with the initial
start-up of the MT-60HS 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.
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
MT-60HS — OPERATION
2.Set the engine ON/OFF switch (Figure 6) to the "ON"
posit ion (start).
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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.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.
3.Close the choke lever (Figure 5) and move the throttle lever
(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
or completely open.
Figure 6. Engine On/Off Switch
Initial Start-up
When starting the MT-60HS Tamping Rammer perform the
following:
1.Open the fuel shut- off valve by movin g the
open
to the
position (Figure 5).
fuel cock
lever
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 8. 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.
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 10) 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 10) and run the engine for three minutes at
low speed. After the engine
switch to the “OFF” position (Figure 5) 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 start/stop 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 (Figure 9). 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-60HS Tamping rammer is designed to run at 5,500
rpm. At optimum rpm the foot hits at the rate of 675 impacts
per minute. Increasing throttle speed past factory set rpm
does not increase impacts and may damage unit. The MT60HS is designed to advance while tamping. For faster
advance, pull back slightly on the handle so that rear of foot
contacts soil first.
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 10) at the
top of the crankcase (body side) and clean it with cleaning oil
(kerosene).
The air cleaner on the engine side will hardly be contaminated,
if it is, however after cleaning the element with kerosene, dip
it in mixed oil consisting of 3 parts of gasoline and 1 part of
engine oil. Then tightly squeeze outer primary element
(sponge) and shake off well the inner secondary element
before installing them.
CLEANING THE OIL TANK
■
Clean the inside of the oil tank regularly, preferably 2 or 3 times
a year.
■
In winter, be sure to clean the inside of oil tank to avoid the
freezing of water that may have accumulated inside the tank.
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
■
When cleaning the oil tank (Figure 11) perform the following
procedure:
MT-60HS — MAINTENANCE
If water accidently got inside the oil tank, the oil
may appear muddy. If this situation occurs,
simply flush the tank, removing all foreign matter
including water, and fill oil tank with fresh 2stroke outboard motor oil.
PRE-CLEANER
GRAY
13 -15 CC
SAE 30
Figure 10. Pre-Cleaner
■
Lubricate the top element (yellow) with 2~5 cc of engine oil
SAE-30.
■
Lubricate bottom element (gray) with 13 ~15 cc of engine oil
SAE-30 and completely squeeze out the excess oil from the
element before installing.
YELLOW
2-5 CC
SAE 30
1.Remove the cock holder cover, oil hose, red and black lead
wires from the float sensor.
2.Remove the bolts that secure the oil tank to the fuel tank, and
drain all oil from the tank.
3.Remove cock holder, then clean strainer and cock holder in
a kerosene solution.
4.Make sure every part is clean and dry, then reassemble oil
tank. Fill oil tank with 2-stroke outboard motor oil (FB class)
to the "H" level.
FUEL AND OIL LINES
■
Check the fuel and oil lines regularly for damage and ensure
that there are no leaks.
■
Replace fuel and oil lines every 2 years to maintain
performance.
■
When replacing the oil hose perform the following procedure:
1.Replace oil hose with manufactures suggested type hose or
equivalent.
2.If necessary, fill oil tank with 2-stroke outboard motor oil.
3.Fill fuel tank with 25:1 fuel mix ratio.
4.Operate rammer with 25:1 fuel mixture until all air is bled from
oil injection line.
5.Once it is certain that all air has been purged from the oil
injection line, regular unleaded gasoline may be used.
CAUTION:CAUTION:
CAUTION:
CAUTION:CAUTION:
It is normal for a new 2-stroke engine to emit
excess smoke, until moving parts have been
seated to their normal operating specifications.
This excess smoke normally stops after one full
tank of fuel.
CLEANING THE RAMMER
■
If using a high pressure spray washer, be careful not to splash
water directly on the air cleaner, carburetor, muffler, fuel and
oil tank caps. Excessive amounts of water may cause severe
engine damage.
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 of rammer with an oil-moistened cloth.
■
Store unit covered with plastic sheet in moisture free and
dust free location out of direct sunlight
200 - 300 HOURS (Oil Bath)
■
Drain oil reservoir on foot housing (Figure 13). Refill with
approximately 1.7 pt. (800cc) of 10W-30 motor oil. Oil should
be midway in sight glass. Break in oil should be changed
after first 50 hours.
■
The air cleaner (Figure 12) on the engine side will hardly be
contaminated, if it is, however after cleaning the element
with kerosene, dip it in mixed oil consisting of 3 parts of
gasoline and 1 part of engine oil. Then tightly squeeze outer
primary element (sponge) and shake off well the inner
secondary element before installing them.