TAMPINGRAMMER
MTX-60ER
MTX-70ER
MTX-80ER
Original
INSTRUCTIONMANUAL
EN
302-05401
Specifications for MTX-series
t
y
t
2012-05-01
Rammer Specifications
Model MTX-60ER MTX-70ER MTX-80ER
Overall height mm 1,025 1,027 1,027
Overall width mm 350 350 365
Overall length mm 713 788 788
Shoe Size W x L mm 265 x 340
Number of Blow
Jumping stroke mm
Hz 10.7 ～ 11.6 10.7 ～ 11.6 10.7 ～ 11.3
(min
-1
)
(644 ～ 695) (644 ～ 695) (642 ～ 679)
50 ～ 80
Impact Force kN (kgf) 13.6 (1,390) 14.9 (1,520) 15.6 (1,590)
Clutch
Fuel Tank Capacity liters
Lubricant for Body
Capacity of Lubrican
for Bod
liters 0.65
Automobile Oil SAE 10W-30; Class SE or higher
Automatic Centrifugal
2.5 liters
0.82
Operating weight kg 64 kg 75 kg 83 kg
285 x 340
Guaranteed Sound Power Level
(in comply with 2000/14/EC)
Hand Arm Vibration (m/sec
comply with 2002/44/EC) Ａ
2
) (in
ｈｖ
Engine Specifications
Model
Type
Caburetor System
Piston Displacement cc
Max. Output kw / rpm
Setting speed rpm
Starting System
Spark plug
Only use the anti-EMI
(electromagnetic interference) type
Lubricant for Engine
Capacity of Lubrican
for Engine
Fuel
liters
107 dB 107 dB 107 dB
5.2 5.6 5.6
Robin ER120D45000
Air-Cooled 4 Stroke, OHV,
Single cylinder gasoline engine.
Diaphragm type
121
2.6 / 3,600
3,800 - 4,100
Recoil starter
NGK : CR5HSB
Automobile Oil ; Class SE or higher
0.35
Unleaded gasoline
Features are subject to change
Standard Equipment:
T
riple Air Cleaner System
Hour & Tacho-meter
Throttle lever which united the engine switch and the fuel cock
Engine Protector
oller on Handle
R
Lifting Handle
＊About Operetion weight
1) Fuel tank is filled up with one half of the fuel of regulation tank capacity.
2) Oil measure of the body and engine is included the stated capacity
MTX TAMPING RAMMER INSTRUCTION MANUAL
Table of contents
Preface
Application
Warning about incorrect applications and techniques
Structure
Power transmission
Warning labels
Precautions for safety
General precautions
Precautions when adding fuel
Precautions about where to use the machine
Precautions before starting work
Precautions while lifting
Transportation and storage precautions
Maintenance precautions
Places where decals are attached
Dimensions
Components
Inspection before operation
Operation
Starting
Operation
Stopping the machine
Maintenance and storage
Periodic checks and adjustments
Troubleshooting
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..... 1
Preface
This instruction manual describes the proper methods for using the tamping rammer, as well as
simple checks and maintenance. Be sure to read this instruction manual before using the
rammer, in order to get full use of the excellent performance of this machine, to improve your
operation and to perform engineering work effectively.
After reading this manual, store it in a handy location for easy reference.
For details about the engine in this machine, see the separate instruction manual for the
engine.
For inquiries about repair parts, parts lists, service manuals, and repair of the machine, please
contact the shop where you purchased it, our sales office, or the Mikasa Parts Service Center.
In addition, parts lists are available on the MIKASA website at:
http://www.mikasas.com/english/
The illustrations and the figures in this manual may be different from the machine
you actually purchased due to design changes and other reasons for improvement.
Application
Though compact and lightweight, this rammer creates a strong impact and you may expect a
large tamping effect on the ground.
It will compact nearly all types of soil, except soft soil that contains too much moisture.
Use this rammer to tamp the ground for creating roads, embankments, and to prepare the
surface to support buildings. It can also be used when burying gas or water lines, and electric
cables.
Warning about incorrect applications and techniques
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 be 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, sand, gravel, and asphalt.
Do not use the machine for other type of jobs.
Structure
The upper section of the machine functions as a weight and consists of an engine section
guide, a gear reducer section, and reciprocating section. It also accommodates the handle and
the fuel tank sections, which are connected by rubber dampers.
The lower section of the machine which hits the ground, consists of a spring case to engage
sliding motion, a sloping section to allow the machine to tilt toward the front, bellows to cover
the foot, a sliding section, and a protective sleeve.
Power transmission
Power is provided by an air-cooled, 4-cycle, single-cylinder gasoline engine. The output end of
the engine crankshaft is equipped with a centrifugal clutch.
As the engine speed increases, the centrifugal clutch expands and a pinion gear that is a part
of the clutch drum engages a gear in the crank shaft on the main frame. The engine speed is
decreased in order to produce the required force for tamping.
The rotating motion of the main frame crankshaft is converted to a reciprocating motion through
a connecting rod. This reciprocating motion causes the foot to go up and down through a strong
coil spring. The weight of the main body and the strong force from the engine compress the
spring and the foot moves up and down, striking the ground forcefully.
1
Warning labels
The triangle shaped marks used in this manual and on the decals stuck on the
main body indicate common hazards. Be sure to read and observe the cautions
described.
Warning labels indicating hazards to humans and to equipment.
！！
！！
DANGER:
Denotes an extreme hazard. It calls attention to a procedure,
practice, condition or the like, which, if not correctly performed
or adhered to, is likely to result in serious injury or death.
！！
WARNING:
Denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or
adhered to, could result in serious injury or death.
！！
CAUTION:
Denotes a hazard. It calls attention to a procedure, practice,
condition or the like, which, if not correctly performed or
adhered to, could result in injury to people and may damage or
destroy the product.
Precautions (without a triangular mark):
Failure to follow the instructions may
result in damage to property.
Precautions for safety
General precautions
！！
WARNING
■
DO NOT work in the following conditions.
- If you do not feel well due to overwork or illness.
- If you are taking any medicine.
- If you are under the influence of alcohol.
！！
CAUTION
■
Read this instruction manual carefully
and handle the machine as described
so that you can work safely.
■
For details about the engine, refer the separate instruction manual for the engine.
Make sure you thoroughly understand the construction and operation of the machine.
■
T o w o r k s a f e ly , a l w a y s w e a r
protective clothing (helmet, safety
glasses, safety shoes, ear plugs etc.)
and appropriate work clothes.
Always check the machine to make
sure that it is normal before starting
operation.
■
The decals on the machine body (operating methods, warning decals, etc.) are very
important to ensure safety. Keep the machine body clean so that they can be read at all
times. If any decal cannot be read, replace it with a new one.
■
It is very dangerous if children come into contact with the machine. Take the utmost care
about how and where the machine is stored.
■
Before performing any maintenance, be sure to turn the engine off.
■
Mikasa does not accept any liability for accidents or problems caused as a result of not
using genuine Mikasa parts (foot assembly, etc.), or if the machine has been modified.
2
Precautions when adding fuel
！
DANGER
■
When adding fuel.
-
Be sure to work in a well ventilated location.
-
Be sure to turn the engine off and wait until it has cooled down.
-
Take the machine to a clear flat location without any combustibles nearby. Be careful not
any over fuel. If you do spill some gasoline, wipe it all up.
-
Do not allow any open flames nearby
while adding fuel. (In particular,
smoking while adding fuel is strictly
prohibited.)
■
Adding fuel until it comes too close to the top of the inlet may cause the fuel to overflow.
That is dangerous. Follow the instructions in the engine manual about the specified fuel
level.
■
When through adding fuel, tighten the tank cap securely.
Precautions about where to use the machine
！
DANGER
■
DO NOT run the engine in an
unventilated location, such as indoors
or in a tunnel. The exhaust gas from
the engine is carbon monoxide and is
deadly.
■
DO NOT operate the machine near
open fires.
Precautions before starting work
CAUTION
！
■
If you use the machine for a long time, be careful to watch for signs of vibration syndrome.
Since this machine vibrates, operation for a long time may have a negative effect on your
body. Take sufficient breaks while working.
■
Before starting to operate the machine, check for other people or obstacles that are too
close for safe operation.
■
When starting the engine, the rammer may jump suddenly. Hold the handle firmly with one
hand and pull the recoil starter with the other hand.
■
Always be careful around scaffolding. Operate the rammer in a stable manner so that it will
not become unbalanced.
■
During operation, don't let the foot of the machine come too close to your foot. The plate
may smash your foot.
■
The main parts of the engine, the
muffler, and muffler cover will be very
hot during operation. Be careful not to
touch them during operation or soon
after operation.
■
If you encounter any problems or abnormality with the machine during operation, while
moving it or stopping operation, stop work immediately.
■
Before leaving the machine, be sure to turn the engine off. Also, make sure to turn the
engine off if you want to move the machine. When the throttle lever is in the stop position,
the fuel cock is closed. Do not move the lever away from the stop position.
■
When lifting the machine by the handle, be careful not to pinch your fingers between the
handle and main body.
3
Precautions before starting work(Continued)
！
DANGER
■
Take the utmost care not to allow the
machine to fall during work, or when
stopped or stored. Secure the
machine with a rope or similar tie
when stored or left idle so that it
cannot fall. If the rammer falls over
when children are around, a serious
accident may occur. If the machine
foot is worn, the machine will be
especially unstable. If the machine
foot is worn badly, replace it with a
new one.
■
If the machine falls over while working, the machine will move forward due to the kicking
motion of the foot while it is lying on its side. If the ground is solid, it will move quickly and is
very dangerous. To ensure that the operator and anyone nearby are safe, turn the throttle
lever to the engine stop position and make sure the machine stops. You must be extremely
careful when working on a road because a serious accident can easily occur.
Precautions while lifting
！
DANGER
■
Before lifting the machine, make sure that there is no damage to any of the components on
the machine (look especially for damage to the rubber mounts and the hook). There must
not be any loose or missing screws and the machine must generally be in a safe condition.
■
Turn the engine off before lifting the machine.
■
Use wire cables with enough strength to support the machine.
■
DO NOT lift it higher than necessary, for safety.
■
DO NOTuse a damaged wire cable.
■
Only use the single hook to lift the
machine. DO NOT support it from any
other points (such as the handle).
■
Never lift or lower the machine rapidly when using a hydraulic shovel or a crane.
■
When lifting the machine, do not allow any people or animals to pass under or near the
machine.
■
When using any type of equipment to lift the machine, be careful that the lifting equipment
does not cause an accident. Make sure you check the lifting equipment carefully, to ensure
that there are no problems or damage.
4
Transportation and storage precautions
！
DANGER
When transporting
■
Before transporting the machine, stop the engine.
■
DO NOT try to move it before the engine and machine body have cooled down enough.
■
Drain any fuel before transporting the machine.
■
Transport the rammer in a manner that keeps it level. If you must lay the machine down to
transport it, drain any fuel from the fuel tank and carburetor. Then close the fuel tank cap
and oil fill plug securely. Next, position the machine so that the carburetor will be facing up.
■
Secure the machine body so that the machine cannot move or fall during transportation.
■
When you want to lift the machine by gripping the handle, be careful not to pinch your
fingers or hands between the handle and the main body.
■
Since this machine is quite heavy, use a truck specifically designed to transport heavy
objects.
When storing the machine
■
After the engine and machine body have cooled down enough, store the rammer so that it is
level. Fasten the machine as needed so that the machine cannot fall down. If you must lay
the machine down, close the fuel tank cap and oil fill plug securely. Arrange the machine
position so that the carburetor will be facing up. After it lays down, make sure there are no
oil or fuel leaks. (If fuel is leaking, drain it all from the fuel tank.)
Maintenance precautions
！
WARNING
■
Appropriate maintenance of the machine is required to ensure safety and keep the machine
performing well. Always be aware of the machine's condition and keep it in good condition.
！
CAUTION
■
Be sure to turn the engine off before
checking or adjusting the machine.
■
The muffler and muffler guard
become very hot. Do not touch them
until they will have cooled down.
■
The lubrication oil and engine oil are
very hot and can burn you. Do not
start any maintenance on the
machine while the oil remains hot.
■
After performing any maintenance, check the condition of the safety components and the
general safety of the machine. In particular, check the nuts and bolts thoroughly.
■
If you have to disassemble any components on the machine, be sure to refer the
maintenance standard sheets and always work safely.
5
Places where decals are attached
1
<
Gasoline Only (
E10)
=
Essence Uniquement
Bitte nur Benzin elnfullen
Usare solo Benzina
Solo para Gasoline
4
NPA-0000
2
3
5
STOP
NPA-0000
8(QUICK MANUAL)
series
quick manual
Engine Oil
Use SAE 10W/30,SE or higher grade motor oil
RAMMING CYLINDER OIL
Use SAE 10W/30,SF or higher grade moter oil
Fuel
Use normal quality gasoline
11
MODEL/MACHINE TYPE/
MODELL/MODELLO/MODELO
SERIAL NO./N DE SERIE/
FABRI.NR./N.MATRICOLA/
N.MATRICULA
WEIGHT/POIDS TOTAL/
BETREIBSGEWICHT/
PESO.MAX./PESO OPERATIRO
OUTPUT/PUISS.MAXI./
LEISTNG/POTENZA MASSIMA/
POTENCIA MAX
1-4-3,Sarugaku-cho,Chiyoda-ku,Tokyo,Japan
6
MIKASA SANGYO CO.,LTD
7
Made in Japan
NPA-0000
NPAJ1284
-
kg
kw
6
No.
1
2
3
4
5
6
7
8
11
11
11
Part No.
9202-15440
9202-12460
9202-12470
9202-12490
9202-12480
9202-10310
9202-12840
9202-12540
9202-16870
9202-16860
9202-16850
Part Name
DECAL,OPERATION
DECAL,AIR CLERNER
DECAL,LEVER OPERATION
DECAL,MAX SPEED 4100
DECAL,MACHINE STOP
DECAL,EC NOISE REQ.LWA107
DECAL,CHOKE OPERATION
QUICK MANUAL
PLATE,SERIAL NO./MTX-60
PLATE,SERIAL NO./MTX-70
PLATE,SERIAL NO./MTX-80
Descriptions of the symbols on the warning decals
A.
A
E
F
B
G
H
DC
I
J
K
M
L
<
Gasoline Only (
E10)
N
7
6
=
Essence Uniquement
Bitte nur Benzin elnfullen
Usare solo Benzina
Solo para Gasoline
Read the instruction manual carefully
B.
Don't fill the fuel tank while the engine is running or hot.
C.
Don't operate the machine in a poorly ventilated area.
D.
Fire hazard
E.
Danger: poisonous exhaust gas
F.
Be careful not to get burned
G.
Don't let your foot slip under the machine foot.
H.
Lay the machine down carefully
I.
Wear protective clothing, such as safety glasses.
J.
Wear protective clothing, such as ear protectors.
K.
Lift point.
L.
Lifting with a forklift is prohibited
M.
Lifting the machine by the engine guard is prohibited
N.
Fuel specification (gasoline)
Remarks
MTX-60ER
MTX-70ER
MTX-80ER
MODEL/MACHINE TYPE/
MODELL/MODELLO/MODELO
SERIAL NO./N DE SERIE/
FABRI.NR./N.MATRICOLA/
N.MATRICULA
WEIGHT/POIDS TOTAL/
BETREIBSGEWICHT/
PESO.MAX./PESO OPERATIRO
OUTPUT/PUISS.MAXI./
LEISTNG/POTENZA MASSIMA/
POTENCIA MAX
MIKASA SANGYO CO.,LTD
1-4-3,Sarugaku-cho,Chiyoda-ku,Tokyo,Japan
Made in Japan
Starting and running
1)
Slide the throttle lever to the idle position.
2)
Turn the choke lever to the "Closed" position.
3)
Pull the recoil starter handle.
4)
Turn the choke lever to the "Open" position.
5)
Slide the throttle lever to the operating position.
Stopping
6)
After work, slide the throttle lever to the idle position.
7)
After the machine has cooled down a little, slide the
throttle lever to the stop position.
Product number name plate
Product name, machine serial number, weight,
engine output, and CE mark
kg
kw
7
Dimensions
350(MTX-60ER,70ER)
365(MTX-80ER)
713(MTX-60ER)
788(MTX-70ER,80ER)
1025(MTX-60ER)
1027(MTX-70ER,80ER)
265(MTX-60ER)
285(MTX-70ER,80ER)
8
340
Components
AIR CLERNER COVER
(UPPER)
ROLLER ASSY
HOOK
COMBINATION LEVER ASSY
HANDLE ASSY
FOOT ASSY
FUEL TANK CAP ASSY
BELLOWS
FUEL TANK ASSY
MUFFLER
ASSY
ENGINE ASSY
HOUR AND TACHO METER
RECOIL STARTER
OIL GAUGE
DRAIN PLUG
9
Inspection before operation
！
WARNING
■
Only check the machine while the engine is stopped. Otherwise, you may be caught by the
rotating components and be seriously injured.
■
Check the machine body only after it
has cooled down. The muffler is very
hot and you may be badly burned.
Inspection points
Appearance
Air cleaner
Bolts, nuts
Handle
Rubber damper
Engine oil
Main body lubrication oil
Fuel tank
Fuel system
Clean each component thoroughly so that
1
Inspection items
Flaws, deformity, stains
Stains, flaws, deformation
Loose or missing parts
Flaws, deformity, cracks, breaks
Flaws, deformity, cracks, breaks
Leaks,oil level,dirt
Leaks,oil level,dirt
Leaks, fuel level, presence of dirt
Leaks, wear, loose parts
there is no mud or dirt on it.
In particular, remove any mud on the machine
foot, and clean the area a round the reco il
starter and carburetor.
2
Ma ke sure that all of the screws are tight.
Loose screws may cause an accident due to
the vibration.
3
To check the engine oil, place the machine
body on a level surface and then tilt it forward.
(Fig.1)
For details about the engine, see the separate
instruction manual for the engine.
4
Place the machine body on a level surface and
look at the oil gauge on the protective sleeve,
from the right side. See if the o il is at the
specified level. (Fig.2)
Use 10W-30 engine oil rated SE
or SF o
better for the engine.
Oil level gauge
Fig.1
Oil gauge assy
Drain plug
r
Add regular gasoline (Unleaded) to the fuel
5
tank and check the engine oil. Add oil before it
gets too low. Too little engine oil may cause
the engine to wear prematurely. (Fig.3)
Use 10W -30 engine oil rated SE or SF or
better for the engine.
！
DANGER:
！
CAUTION:
Fire hazard while refueling.
If any fuel spills, wipe it all up.
10
Fig.2
Fig.3
Operation
Starting
Slide the throttle lever from the stop to the idle
1
position( ). That opens the fuel cock and the
e ngin e e l e c t r i c a l c i r c u i t i s t urne d o n
automatically. (Fig.4-1)
Diaphragm carburetor with Primer system
Push the bulb at Primer Pump several times, which
delivers fuel to the carburetor forcibly. (Fig.4-2)
Note
The one possible problem with Primer System is
the fuel flooding in the carburetor because the
bulb is pressed in excessive times.
Fig.4-1
Push the choke lever on the carburetor to the
2
cl osed pos ition. When it is cold, close the
choke all the way. When it is hot, such as in
the summer, or when the engine is already hot,
open the choke a little or leave it fully open.
If the engine cannot be st arted , open the
choke a little so as not to flood the carburetor.
(Fig.5-1, 5-2)
Primerpump
Diaphragm carburetor
Float carburetor
Fig.4-2
Fig.5-1
Fig.5-2
11
Hold the recoil starter handle and pull it a little.
3
You will feel resistance. Then, pull it hard to
turn the engine. Allow the starter rope to return
slowly into the case before letting go of the
handle. (Fig.6)
After the engine has started, open the choke
4
lever gradually until it is wide open. Pay
attention to the sound of the engine to guide
you in the amount to open the choke. After the
engine has started, be sure to warm up the
engine at low speed for 3 to 5 minutes. During
this time, check the machine for leaking fuel,
abnormal sounds, or abnormal exhaust color
or odor.
Fig.6
CAUTION:
If the engine cannot be started after pulling the
5
starter handle several times, remove the spark
plug and see if it has a spark. If the plug is wet
from fuel (due to flooding from the carburetor),
or if it is stained, replace the plug or clean it
thoroughly. While the plug is removed, pull the
starter handle 2 to 3 times to discharge any
fuel from the cylinder.
When warming up, if in the semiclutch in order not to be,pay
attention to engine speed.
Operation
Shift the throttle lever from idle( ) to the
1
operating position( ) (Fig. 7) and the tamping
rammer will start up and down motions.
Shifting the lever slowly will cause irregular
operation and damage the clutch, springs, and
foot.
CAUTION:
If you start it’s operating too quickly
the engine may stop due to the
operation of the carburetor.
2
After operation is started, adjust the throttle
lever a little until the rammer tamps the soil
correctly. When the engine is running within
the specified rpm range, the rammer will be the
most effective. If the engine runs too fast, the
tamping force will not be increased. Instead,
the spring resonance will decrease the
tamping force and damage the machine.
WARNING:
If the rammer is used on sloping
ground, check the safety of the
surroundings and be careful not to
allow the machine to fall over.
12
Fig.7
In the cold season, the oil in the machine will be
3
thicker, and the resistance of the components
will be much larger, which may cause irregular
motion . Shift the thr ottle lev er fr o m the
operation to the idle position several times and
allow it to warm up sufficiently before starting
actual work.
4
The surface of the foot in contact with the
ground is a metal sheet that has excellent wear
resistance. However if you need to tamp ground
that contains large stones (about the size of a
fist), first put some fill soil over them so that the
foot will tamp the ground evenly.
5
The machine body will advance as it jumps. If
you want to move forward faster, push the
handle a little forward to make the machine
body lean a little forward.
6
To halt work, quickly slide the throttle lever from
the operation position( ) to the idle position
( ). Do not slide the throttle lever slowly
(Fig.8).
Stopping the machine
1
Slide the throttle lever from the operation
position( ) to the idle position( ). Run the
engine at low speed for 3 to 5 minutes to cool it
down. Then slide the throttle lever from the idle
position to the stop position. The engine will
stop and the fuel cock is closed automat
(Fig.9)
If
the engine does not stop due to a problem
2
with the switch or something similar, take the
machine to a safe location and hold the throttle
lever in the stop position. Let the machine run in
idle and the engine will stop after a few
minutes.
Fig.8
ically.
fig.9
13
Maintenance and storage
Wash off any dirt or mud on each part of the
1
machine using fresh water.
After the engine and main body have cooled
2
down, store the rammer on a level location.
Secure the machine body so that it can not fall
down. If you have to lay the machine down,
close the fuel tank cap securely and tighten
engine oil drain plug. After the engine and
machine body hav e c ooled down, lay the
machine so that the carburetor is facing up.
4
For prolonged storage
- Slide the throttle lever to the stop position.
- Drain any fuel and replace the lubrication oil.
Apply grease to the lubrication points.
Be sure to remove any fuel in the fuel hose,
too.
- Cover the air intake on the air cleaner and
the exhaust outlet on the muffler.
- Store the machine indoor. Do not leave it
outside.
Once the machine has been laid down, make
sure that there is no fuel or lubrication oil leaks.
(If the fuel leaks, drain the fuel from the fuel
tank.)
3
Put a cover on the machine body to prevent
dirt landing on it. Store the machine in a
location that is not exposed to direct sunlight
and which has low humidity.
Periodic checks and adjustments
Table of scheduled checks
How often? Place to check Item to check Others
Daily
(before starting operation)
After first 20 hours
Every 50 hours Spark plug
Every 80 to 100 hours Cleaning
Every 200 hours
Every 2 years Fuel hose
Appearance
Air cleaner
Bolts, nuts
Handle
Rubber damper
Engine oil
Main body lubrication oil
Fuel tank
Fuel system
Engine oil
Engine oil
Primary element
Secondary elementEvery 100 to 150 hours Cleaning Neutral detergent
Lubrication oil in
the main body
Pipe, Intake
Flaws, deformity, stains
Dirt, flaws, deformation
Loose or missing parts
Flaws, deformity, cracks, breaks
Flaws, deformity, cracks, breaks
Leaks,oil level,dirt
Leaks,oil level,dirt
Leaks, fuel level,presence of dirt
Leaks, wear, loose parts
Replace once, after the first 20 hours
Clean, adjust gap
Replace
Replace Engine oil
Replace
Replace
Engine oil
Engine oil
Gasoline
Engine oil
Engine oil
Lamp kerosene
Engine oil(25-30cc)
(water washing and
dry)
14
Periodic checks and adjustments(Continued)
Daily maintenance
1
Carefully wipe off any mud, dirt or oil from
each component.
If oil leaks, retighten the joints and check
again.
Maintenance after every 50 hours of operation
2
Remove the fuel filter cup and clean the inside
thoroughly. (Fig.10) Remove the spark plug and
clean it. Then adjust the gap to 0.6 to 0.7 mm.
Replacing the lubrication oil
3
Remove the drain plug on the lower part of the
machine body and drain the oil inside. Then
add the specified amount of new oil.
(Fig.11)
Model
MTX-60ER MTX-70ER MTX-80ER
Oil gauge
Drain plug
Fuel filter
fig.10
Capacity
(liters)
Cleaning the air cleaner
4
Remove the upper air cleaner cover on the
main body. Loosen and remove the 2 Phillips
screws that hold the cover on the air cleaner
assembly.
a.
Primary element (clean every 80 to 100 hours)
If the primary element is dirty, wash it with
gasoline or lamp kerosene. Then, dip it in
engine oil SAE10W-30 and wring it out. (Wring
the element so that 25 to 30 cc of engine oil
remains in the element.) (Fig.12)
0.65 0.82 0.82
fig.11
Primary element
fig.12
15
b.
Secondary element (clean every 100 to 150
hours)
When the secondary element (under the
primary element) becomes dirty, wash it with
neutral detergent solution and dry it well. Then
reuse it. (Fig.13, 14)
Secondary element
fig.13
5
Be sure to check the fuel line for damaged
or looseness.
Replace the fuel line every 2 years, even if it
does not show any abnormality.
6
Cleaning the machine body
If you want to clean the machine body using
high-pressure steam, do not spray water
directly into the air cleaner, carburetor, muffler,
or top of the fuel tank. Otherwi se engine
problems may occur.
fig.14
16
Troubleshooting
Engine
1.Won't start
Fuel is present
but the spark plug
is not sparking.
Fuel and spark
are both present.
Fuel is not being
supplied to the
carburetor.
Electricity is being
su p pl i ed to th e
h i g h v o l t a g e
cable.
Electri city is not
being supplied to
the high vol tage
cable
Compressi o n i s
good
Compressi o n i s
low
No fuel in the fuel tank.
Faulty fuel cock operation.
The fuel filter is clogged.
The air hole in the cap on the fuel tank is clogged.
Air is trapped in the fuel line.
The gap in the spark plug tip is clogged.
Carbon is stuck on the spark plug
The spark plug has a short circuit due to faulty
insulation.
The gap in the spark plug is the wrong size.
The stop button switch has a short circuit.
The ignition coil is broken.
The muffler is clogged with carbon.
The wrong fuel was used.
The air cleaner is clogged.
The fuel is contaminated with water or dirt.
The cylinder head gasket is blown or the head is not
correctly tightened.
The piston rings don't fit well.
The cylinder is worn.
The spark plug is not seated tightly.
The valve seat is damaged.
2.Faulty operation
Too little
power
Engine
overheats
Smoke
comes from
the muffler
(In the winter, the machine may emit white smoke for a while when first started in the morning.
This is not abnormal.)
Good compression
and no misfiring
Low compression (See ”Compression in low” above
Good compression
but misfires
Excessive accumulation of carbon in the combustion chamber.
Clog exhaust port or muffler.
Faulty spark plug.
Black smoke
Blue
smoke
White smoke
Good
compression
Compression
is low
Dirt in the air cleaner.
Air trapped in the fuel line.
Carbon has accumulated in the cylinder.
Faulty ignition coil.
Dirt on the spark plug.
Ignition coil shorts sometimes.
Choke lever wasn't returned to the open position.
Blended oil (for 2-cycle engines) was used.
Too much oil.
Engine oil leaked into the air cleaner when the
machine was laid down on the wrong side.
Worn piston rings.
The piston rings don't fit well.
Moisture in the gasoline.
The air cleaner is wet.
Engine speed fluctuates
Faulty governor adjustment.
Faulty governor spring.
Faulty fuel flow.
Air being sucked into the fuel line.
17
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