MQ Multiquip Mikasa MTX60HD User manual

OPERATION MANUAL
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.
SERIES
MODEL MTX60HD
TAMPING RAMMER
(HONDA GX100RTKRBF GASOLINE ENGINE)
Revision #10 (11/30/22)
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PAGE 2 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
PROPOSITION 65 WARNING
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PAGE 4 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
TABLE OF CONTENTS
MTX60HD Rammer
Proposition 65 Warning ........................................... 2
Safety Information ............................................... 5–8
Specifications .......................................................... 9
Noise And Vibration Emissions.............................. 10
General Information............................................... 11
Components .......................................................... 12
Basic Engine.......................................................... 13
Transporting And Lifting......................................... 14
Inspection .............................................................. 15
Operation......................................................... 16–17
Maintenance.......................................................... 18
Troubleshooting ............................................... 19–21
NOTICE
Specifications and part numbers are subject to change
without notice.
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — 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
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.
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PAGE 6 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
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.
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 7
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 truck
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.
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PAGE 8 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
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.
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 9
SPECIFICATIONS
Table 1. Rammer Specifications
Overall Height 38.8 in. (985 mm)
Overall Width 13.8 in. (350 mm)
Over Length 28.1 in. (713 mm)
Shoe Size (W x L) 10.4 x 13.4 in. (265 x 340 mm)
Fuel Tank Capacity 2.7 qt. (2.5 liters)
Lubrication Oil Capacity 0.69 qt. (0.65 liter)
No. of Impacts Per Second 644-695 (10.7 - 11.6 Hz)
Impact Force 3,060 lbf (13.6 kN)
Impact Plate Stroke 2 - 3.2 in. (50 - 80 mm)
Operating Weight 141 lbs. (64 kg)
Table 2. Engine Specifications
Model Honda GX100RTKRBF Engine
Type Air-Cooled 4 Stroke, Overhead camshaft,
single cylinder gasoline engine
Piston Displacement 6.0 cu.in. (98 cc)
Max. Output 3.0 hp/3,600 rpm (2.2 KW)
Max. Governed Speed, No Load 3,800 - 4,100 rpm
Cooling System Air-Cooled
Engine Oil Capacity 0.3 qt. (0.28 liters)
Fuel Unleaded gasoline
Lubricant for Engine Automobile Oil; Class SE or higher
Starting System Recoil Starter
Spark Plug Type NGK CR5HSB
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PAGE 10 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
NOISE AND VIBRATION EMISSIONS
NOTES:
1. Products are tested for sound pressure level in accordance with European Directives 2000/14/EC and 2005/88/EC, relating to Noise Emission
in the Environment by equipment for use outdoors.
2. Products are tested for hand/arm vibration (HAV) level in accordance with European Directives 2002/44/EC and EN500-4 and ISO 5349-1:2001,
ISO 5349-2:2001.
Table 3. Noise and Vibration Emissions
Measured Sound Power Level in dB(A) 103
Guaranteed Sound Power Level in dB(A) 107
Guaranteed Sound Pressure Level at Operator Station in dB(A) 92
Hand-Arm Vibration in m/s25.2
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 11
GENERAL INFORMATION
The Multiquip MTX60HD tamping rammer is a walk-
behind compactor designed for use in cohesive soils. 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 MTX60HD levels and uniformly
compacts voids between soil particles to increase dry
density.
Circular motion is converted to create impact force.
The MTX60HD tamping rammer develops a powerful
compacting force at the foot of the rammer. To maintain
optimum performance, proper operation and service are
essential.
The MTX60HD is equipped with an air cooled, four- cycle
gasoline engine. Transmission of the power takes place
by increasing the engine speed to engage the centrifugal
clutch.
The MTX60HD uses an oil bath lubrication system. Always
check the oil level through the oil level sight glass at the
rear of the tamper foot.
Before starting the MTX60HD Tamping Rammer identify
and understand the function of the controls.
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PAGE 12 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
COMPONENTS
4
7
8
6
5
3
2
1
9
10
11
12
13 14
REAR
FRONT
Figure 1. MTX60HD Rammer
Figure 1 shows the location of the controls and components
for the MTX60HD Tamping Rammer.The functions of each
control is described below:
1. Fuel Tank Cap — Remove this cap to add unleaded
gasoline to the fuel tank.
2. Guide Handle — Used by the operator while standing
behind the machine to control direction and speed.
3. Combination (Throttle) Lever — Used to adjust
engine speed (rpm).
4. Fuel Tank —Holds the fuel for the unit (up to 3.2
quarts/0.8 gallons).
5. Engine — This unit uses a Honda gasoline engine.
6. Lower Lifting Handle —Used with rollers (item 6) to
facilitate the loading onto tailgate of a truck or transport
vehicle.
7. Oil Gauge (Sight Glass) —Indicates the level of oil in
the oil bath reservoir.
8. Drain Valve —Open this valve to remove oil from the
bellows.
9. Foot —Laminated wood with tempered steel plate for
superior shock absorption.
10. Bellows — Reservoir for oil bath.
11. Roller —Facilitates loading onto tailgate of a truck or
transport vehicle
12. Air Cleaner Cover —Protects the air cleaner which
prevents dirt and other debris from entering the engine.
13. Muffler —Reduces the noise of the engine when
running.
14. Center Lifting Point —Connection point for a lifting
hook or strap when lifting with a forklift, crane or other
machinery.
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 13
BASIC ENGINE
Figure 2. Honda GX100 Engine
The engine (Figure 2) must be checked for proper lubri-
cation and filled with fuel prior to operation. Refer to the
engine manufacturer's manual for detailed operation and
service information.
1. Choke Lever — Normally used in starting the engine
in cold weather conditions. In cold weather, turn
the choke lever to the fully closed position. In warm
weather, set the choke lever halfway or completely
open.
2. Spark Plug — Provides spark to the ignition system.
Set spark plug gap to 0.024 - 0.028 inch (0.6 - 0.7 mm).
Clean spark plug once a week.
3. Recoil Starter (pull rope) — Manual-starting method.
Pull the starter grip until resistance is felt, then pull
briskly and smoothly.
NOTICE
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, causing rapid engine
wear.
4. Muffler — Used to reduce noise and emissions.
5. 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.
6. Oil Drain Plug — Remove this plug to remove oil from
the engine's crankcase.
WARNING
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.
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PAGE 14 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
TRANSPORTING AND LIFTING
Inspect the lower lifting handle (Figure 3) for cracks or
damage. If the lifting handle is damaged in any way, replace it
immediately. Ensure hardware is properly tightened before use.
Figure 3. Lower Lifting Handle Inspection
RAMMER LOADING (TRUCK TAILGATE)
1. Tilt rammer so that the roller makes contact with the
edge of the truck tail gate as shown in Figure 4.
2. Next, grab lower lifting handle and push rammer
forward until rammer is fully postioned onto truck bed.
3. Using straps, secure rammer to truck bed.
CRACKS
CRACKS
BOLT
AND NUT
TIGHTNESS
LOWER
LIFTING HANDLE
RAMMER LIFTING
1. When using a forklift or crane to lift the rammer, attach a
suitable lifting strap to the lifting handle on the rammer
as shown in Figure 5.
Figure 5. Rammer Lifting (Forklift/Crane)
NOTICE
DO NOT use the lower lifting handle as a connection
point when transporting or lifting with forklifts, cranes
or other machinery.
NYLON STRAP
LIFTING
HANDLE
Figure 4. Loading Rammer Onto Truck Bed
ROLLER
LOWER
LIFTING HANDLE
TAILGATE
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 15
INSPECTION
It is 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.
CRANKCASE 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 6) at the rear of the tamper foot.
Figure 6. 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 6). The
bath contains approximately 0.69 qt. (0.65 liter).
ENGINE
1. Fill the fuel tank (Figure 7) with unleaded gasoline.
After refueling, make sure cap is tightened securely.
DO NOT over fill. At the same time, check the engine
oil and make it a habit to replenish it often (Figure 8).
SIGHT GLASS
OIL
DRAIN PLUG
OIL
FILL PLUG
NOTICE
The oil level should be kept at the half way point of the
sight glass.
WARNING
RISK OF FIRE! Refueling should be
preformed only while the engine is off.
Attempting to refuel while engine is
running, or while the engine is hot, can
ignite fuel spills and result in personal
injury.
Figure 7. Fuel Tank
Figure 8. Engine Oil Dipstick
2. Low levels of oil may result in engine seizure due to
high levels of consumption during operation.
3. Check the engine oil level and if the engine oil level is
low, it should be refilled. Use the proper motor oil as
suggested in the Table 4 below.
GENERAL 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.
FUEL
TANK
OIL
LEVEL
DIPSTICK
Table 4. Motor Oil Grade
Season or Temperature Grade of motor oil
(higher than MS class)
Spring, Summer or Autumn
+120° F to +15° F SAE 30
Winter +40° F to +15° F SAE 30
Below +15° F SAE 10W-30
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PAGE 16 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
OPERATION
INITIAL STARTUP
When starting the MTX60HD Tamping Rammer perform
the following:
1. Slide the throttle lever from the stop to the idle position
() (Figure 9). This opens the fuel cock and the
engine electrical circuit is turned on automatically.
Figure 9. Throttle Lever (Idle Position)
2. Carburetor Purge System: Push the purge bulb 4 times
or until you see fuel in the bulb (Figure 10).
Figure 10. Purge Bulb
CAUTION
Failure to understand the operation of the Tamping
Rammer could result in severe damage to the unit or
personal injury.
THROTTLE LEVER
(IDLE POSITION)
NOTICE
Pumping the purge bulb removes air from the fuel
system. It does not pump fuel into the carburetor.
3. Place the choke lever to the closed position.When the
weather is cold, close the choke all the way. When it
is hot, or if the engine is hot, open the choke a little or
leave it fully open.
Figure 11. Choke Lever
4. Grip the starter rope handle (Figure 12) and pull it
until you feel a slight resistance. Then pull sharply and
quickly. Return the handle to the starter case before
releasing.
Figure 12. Recoil Starter
5. If engine fails to start, move the choke lever (Figure 11)
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.
STARTER
ROPE
NOTICE
To reduce engine speed, move throttle lever forward
( ), to increase engine speed, move lever back
towards operator ( ). Always operate rammer at full
rpm.
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 17
OPERATION
OPERATION
Figure 13. Rammer Operating Position
1. To start the rammer tamping action, move the throttle
lever (Figure 14) quickly from IDLE ( )to the
START ( )position. DO NOT move the throttle
lever slowly as this may cause damage to the clutch
or spring.
Figure 14. Throttle Lever (Start Position)
CAUTION
Rammer should only be operated while standing
behind the machine, and holding Guide Handle
firmly with both hands (Figure 13A). NEVER operate
rammer while holding handle/roller at the front of the
machine (Figure 13B), damage to the unit could result
and personal injury.
A
B
CORRECT
INCORRECT
THROTTLE
LEVER
(START
POSITION)
2. The MTX60HD tamping rammer is designed to run at
3,800 to 4,100 rpm. At optimum rpm the foot hits at the
rate between 644-695 impacts per minute. Increasing
throttle speed past factory set rpm does not increase
impacts and may damage unit.
The MTX60HD is designed to advance while tamping.
For faster advance, push down slightly on the handle.
For slower advance pull back slightly on the handle.
3. To stop the tamping action, move throttle lever quickly
from the START ( ) position to the IDLE ( )
position (Figure 9).
STOPPING THE ENGINE
1. Move throttle lever quickly from the START ( )
position to the IDLE ( )position (Figure 9) and run
the engine for three minutes at low speed. After the
engine cools, move the throttle lever to the STOP
position (Figure 15). The engine will stop and the fuel
cock is automatically closed.
Figure 15. Throttle Lever (Stop Position)
2. If the engine does not stop due to a problem with the
switch or the like, move the machine to a safe location
and hold the throttle lever in the stop position. Let the
machine run on idle and the machine will stop after a
few minutes.
CAUTION
Make sure that the throttle lever is moved to the FULL
START position. Operating the rammer at less than full
speed can result in damage to the clutch springs or foot.
THROTTLE
LEVER
(STOP
POSITION)
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PAGE 18 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
MAINTENANCE
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.
EVERY 50 HOURS
Inspect in-line fuel filter (Part Number 16910Z4ES21,
Figure 16) and replace if necessary.
Figure 16. In-Line Fuel Filter
Remove and clean the spark plug, then adjust the spark
gap to 0.024~0.028 inch (0.6~0.7 mm).
EVERY 80 TO 100 HOURS
Remove the air cleaner cover. Loosen and remove
the 2 screws that hold the cover to the air cleaner
assembly. If the primary element (Figure 17) is dirty,
wash it with gasoline or kerosene. Then dip it in engine
oil (SAE10W-30) and wring the element so that 25 to 30
cc of engine oil remains on the element.
Figure 17. Air Cleaner Primary Element
PRIMARY
ELEMENT
EVERY 200 HOURS
Remove the oil drain plug on foot housing (Figure 18)
and drain the oil. Refill with approximately 0.69 qt. (0.65
liter) 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 18. Oil Drain Plug
EVERY 6 MONTHS
Clean the inside of the fuel tank with solvent.
Inspect and clean fuel strainer (Figure 19). Replace
strainer if necessary.
Figure 19. Fuel Strainer
EVERY 2 YEARS
Replace the fuel line every 2 years even if there is no
visible damage.
LONG TERM STORAGE
Slide the throttle lever to the STOP position.
Drain any fuel including in the fuel hose.
Replace lubrication oil and apply grease to lubrication
points.
Cover the air intake on the air cleaner and the exhaust
outlet on the muffler.
Store unit indoors covered with plastic sheet in moisture
free and dust free location out of direct sunlight.
SIGHT GLASS
OIL DRAIN PLUG
OIL FILL PLUG
FUEL
STRAINER
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MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22) — PAGE 19
TROUBLESHOOTING
Troubleshooting (Engine)
Symptom Possible Problem Solution
Difficult to start, fuel is available, but no spark at
spark plug.
Combo lever in incorrect position? Make sure combo lever is in start position.
Spark plug bridging? Check gap, insulation or replace spark plug.
Carbon deposit on spark plug? Clean or replace spark plug.
Short circuit due to deficient spark plug
insulation? Check spark plug insulation, replace if worn.
Improper spark plug gap? Set to proper gap.
Fuel reaching carburetor? Check fuel line.
Water in fuel tank? Flush or replace fuel tank.
Fuel filter clogged? Replace fuel filter.
Stuck carburetor? Check float mechanism.
Spark plug is red? Check transistor ignition unit.
Spark plug is bluish white?
If insufficient compression, repair or replace
engine. If injected air leaking, correct leak. If
carburetor jets clogged, clean carburetor.
No spark present at tip of spark plug?
Check transistor ignition unit is broken, and
replace defective unit. Check if voltage cord
cracked or broken and replace. Check if spark
plug if fouled and replace.
No oil? Add oil as required.
Difficult to start, fuel is available, and spark is
present at the spark plug.
ON/OFF switch is shorted? Check switch wiring, replace switch.
Ignition coil defective? Replace ignition coil.
Improper spark gap, points dirty? Set correct spark gap and clean points.
Condenser insulation worn or short circuiting? Replace condenser.
Spark plug wire broken or short circuiting? Replace defective spark plug wiring.
Difficult to start, fuel is available, spark is
present and compression is normal.
Wrong fuel type? Flush fuel system, replace with correct type of
fuel.
Water or dust in fuel system? Flush fuel system.
Air cleaner dirty? Clean or replace air cleaner.
Choke open? Close choke.
Difficult to start, fuel is available, spark is
present and compression is low.
Suction/exhaust valve stuck or protruded? Reseat valves.
Piston ring and/or cylinder worn? Replace piston rings and/or piston.
Cylinder head and/or spark plug not tightened
properly? Torque cylinder head bolts and spark plug.
Head gasket and/or spark plug gasket damaged? Replace head and spark plug gaskets.
No fuel present at carburetor.
No fuel in fuel tank? Fill with correct type of fuel.
Fuel cock does not open properly? Apply lubricant to loosen fuel cock lever,
replace if necessary.
Fuel filter/lines clogged? Replace fuel filter.
Fuel tank cap breather hole clogged? Clean or replace fuel tank cap.
Air in fuel line? Bleed fuel line.
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PAGE 20 — MTX60HD RAMMER • OPERATION MANUAL — REV. #10 (11/30/22)
TROUBLESHOOTING
Troubleshooting (Engine) - continued
Symptom Possible Problem Solution
Weak in power, compression is proper and
does not misfire.
Air cleaner dirty? Clean or replace air cleaner.
Improper level in carburetor? Check float adjustment, rebuild carburetor.
Defective spark plug? Clean or replace spark plug.
Improper spark plug? Set to proper gap.
Weak in power, compression is proper but
misfires.
Water in fuel system? Flush fuel system and replace with correct
type of fuel.
Dirty spark plug? Clean or replace spark plug.
Ignition coil defective? Replace ignition coil.
Engine overheats.
Spark plug heat value incorrect? Replace with correct type of spark plug.
Wrong type of fuel? Replace with correct type of fuel.
Cooling fins dirty? Clean cooling fins.
Intake air restricted? Clear intake of dirt and debris. Replace air
cleaner elements as necessary.
Oil level too low or too high? Adjust oil to proper level.
Rotational speed fluctuates.
Governor adjusted incorrectly? Adjust governor.
Governor spring defective? Replace governor spring.
Fuel flow restricted? Check entire fuel system for leaks or clogs.
Recoil starter malfunctions. (if applicable)
Recoil mechanism clogged with dust and dirt? Clean recoil assembly with soap and water.
Spiral spring loose? Replace spiral spring.
Starter malfunctions.
Loose, damaged wiring? Ensure tight, clean connections on battery
and starter.
Battery insufficiently charged? Recharge or replace battery.
Starter damaged or internally shorted? Replace starter.
Burns too much fuel.
Over-accumulation of exhaust products? Check and clean valves. Check muffler and
replace if necessary.
Wrong spark plug? Replace spark plug with manufacturer's
suggested type.
Exhaust color is continuously "white".
Lubricating oil is wrong viscosity? Replace lubricating oil with correct viscosity.
Worn rings? Replace rings.
Exhaust color is continuously "black".
Air cleaner clogged? Clean or replace air cleaner.
Choke valve set to incorrect position? Adjust choke valve to correct position.
Carburetor defective, seal on carburetor
broken? Replace carburetor or seal.
Poor carburetor adjustment, engine runs too
rich? Adjust carburetor.
Will not start, no power with key "ON". (if
applicable)
ON/OFF device not activated ON? Turn on ON/OFF device.
Battery disconnected or discharged? Check cable connections. Charge or replace
battery
Ignition switch/wiring defective? Replace ignition switch. Check wiring.
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