MASALTA EMR75M Tamping Rammer Instruction Manual

October 30, 2023
MASALTA

MASALTA EMR75M Tamping Rammer

WARNING: To reduce the risk of injury, all operators and maintenance personnel must read and understand these instructions before operating, changing accessories, or performing maintenance on Masalta power equipment. All possible situations cannot be covered in these instructions. Care must be exercised by everyone using, Maintaining or working near this equipment.

Product Introduction

Thank you for selecting the Tamping Rammer EMR75M. The product has been designed, manufactured, and tested with care and is covered by a six-month warranty. If you require service or spare parts, prompt and efficient service is available from our company or our agent.

Definition of Tamping Rammer

The Tamping Rammer is a compacting machine that quickly works by applying consecutive impacts to the surface of soil in order to level the uneven soil surface, to compact the soil uniformly so that the void among soil particles are minimized, and to increase its dry density with moisture in the soil removed.

Construction of Tamping Rammer

The Tamping Rammer has an air-cooled engine installed as its source of power. The transmission of power takes place by increasing engine speed to engage a centrifugal clutch, and the speed is substantially reduced by means of gears. Rotational motion is converted into reciprocal (vertical) motion through a heavy duty spring installed at the part that moves up and down. Proper service and operation are essential for full commissioning of such performance.

Product Application

Rammers are designed to compact loose soils and gravel to prevent settling and provide a firm, solid base for the placement of footings, concrete slabs, foundations, gas piping works, water pipe works, and cable backfill works, etc. The Tamping Rammer is to be used for compacting cohesive clay, gravels, and patching work on asphalt, etc.

Warnings for Incorrect Application and Abuse

Please do not use the Tamping Rammer in the following cases as it may cause damage because the machine is likely to be unbalanced:

  • Pile foundation
  • Hard soil excessively compacted over normal condition
  • Steep bank slope

Product Structure

The upper part of the Tamping Rammer is made up of a Power source, Clutch, Connecting Rod and Operating Handle, Fuel Tank that connected via Shock Absorbing Rubber to the body. The bottom end is made up of Spring Cylinder (Sliding part), Foot Plate that ramps the body, Foot and Bellows that covers sliding part.

Product Operating Safety

Safety Notes: This manual contains NOTES, CAUTIONS, and WARNINGS which must be followed to prevent the possibility of improper service, damage to the equipment, or personal injury.

  • Notes: Notes contain additional information important to the procedure.
  • CAUTION: Cautions provide information important to prevent errors which could damage machine or components.
  • WARNING: Warnings warn of conditions or practices which could lead to personal injury or death!

Operating Safety

Familiarity and proper training are required for the safe operation of equipment! Equipment operated improperly or by untrained personnel can be dangerous! Read the operating instructions and familiarize yourself with the location and proper use of all instruments and controls. Inexperienced operators should receive instruction from someone familiar with the equipment before being allowed to operate the rammer.

Product Usage Instructions

  1. Before using the Tamping Rammer, read and understand all safety warnings and instructions in the manual.
  2. Ensure that the area where the rammer will be used is free of any obstacles or debris that could cause injury or damage to the machine.
  3. Fill the fuel tank with the appropriate fuel and oil mixture as specified in the manual.
  4. Start the engine according to the instructions in the manual.
  5. Place the foot plate on the surface to be compacted and holdonto the operating handle.
  6. Slowly lower the rammer onto the surface and allow it to begin compacting.
  7. Move the rammer in a forward motion, taking care not to lift it off the surface until you have completed a full cycle of compacting.
  8. Repeat the process until the entire area has been compacted to your satisfaction.
  9. When finished, turn off the engine and allow the Tamping Rammer to cool down before storing it in a dry place.

WARNING

To reduce the risk of injury, all operators and maintenance personnel must read and understand these instructions before operating, changing accessories, or performing maintenance on Masalta power equipment. All possible situations cannot be covered in these instructions. Care must be exercised by everyone using, Maintaining or working near this equipment.

Introduction

Thanks for your selection of this equipment. We have taken care in the design, manufacture and testing of the product. It is covered by a six month warranty. Should service or spare parts be required, prompt and efficient service is available from our company or our agent.

Definition of Tamping Rammer

Tamping Rammer is a compacting machine, capable of quickly working by applying consecutive impacts to the surface of soil-in order to level the uneven soil surface, to compact the soil uniformly so that the void among soil particles are minimized and to increase its dry density with moisture in the soil removed.

Construction of Tamping Rammer

  • Air-cooled engine has bee installed as its source of power.
  • Transmission of the power is taken place by increasing engine speed to engage a centrifugal clutch, and the speed is substantially reduced by means of gears and rotational motion is converted into reciprocal (vertical) motion.
  • A heavy duty spring is installed at the part that moves up and down so that its force and the weight of tamping rammer work each other to develop powerful compacting force at the foot of the rammer. Proper service and operation are essential for full commissioning of such performance.

Application

Rammers are designed to compact loose soils and gravel to prevent settling and to provide a firm, solid base for the placement of footings, concrete slabs, foundations, gas piping works, water pipe works and cable backfill works, etc.

Warnings for incorrect application and abuse

Please do not use in such as following cases. It may cause damage because machine is likely to be unbalanced.

  • Pile foundation
  • Hard soil excessively compacted over normal condition
  • Steep bank slope

Tamping Rammer is to be used for compacting cohesive clay, gravels, and patching work on asphalt, etc.

Structure

The upper part is made up of Power source, Clutch, Connecting Rod and Operating Handle, Fuel Tank that connected via Shock Absorbing Rubber to body. Bottom end is made up of Spring Cylinder (Sliding part), Foot Plate that ramps body, Foot and Bellows that covers the sliding part.

Operating Safety

Safety Notes

This manual contains NOTES, CAUTIONS, and WARNINGS which must be followed to prevent the possibility of improper service, damage to the equipment, or personal injury.

  • Notes: Notes contain additional Information important to procedure.
  • CAUTION: Cautions provide information important to prevent Errors which could damage machine or components.

WARNING

  • Warnings warn of conditions or practices which could lead to personal injury or death!

Operating Safety

  • Familiarity and proper training are required for the safe operation of equipment! Equipment operated improperly or by untrained personnel can be dangerous! Read the operating instructions and familiarize yourself with the location and proper use of all instruments and controls. Inexperienced operators should receive instruction from someone familiar with the equipment before being allowed to operate the rammer.
  • NEVER operate rammer in applications for which it is not intended.
  • NEVER allow improperly trained personnel to operate rammer.
  • NEVER touch hot muffler, engine cylinders, or cooling fins. Burns will result.
  • NEVER use accessories or attachments which are not recommended by MASALTA for rammer.
  • Damage to rammer and/or injury to user may result.
  • NEVER leave a running machine unattended.
  • NEVER run machine indoors or in an enclosed area such as a deep trench unless adequate ventilation is provided. Exhaust gas from the engine contains poisonous carbon monoxide gas; exposure to carbon monoxide can cause loss of consciousness and may lead to death.
  • NEVER tamper with or disable the function of operating controls.
  • NEVER use choke to stop engine.
  • NEVER operate the machine in areas where explosions may occur.
  • ALWAYS remove or disconnect engine spark plug before servicing rammer, to avoid accidental start-up.
  • ALWAYS read, understand, and follow procedures in Operator‟s Manual before attempting to operate equipment.
  • ALWAYS be sure that all other persons are at a safe distance from the rammer. Stop the machine if people step into the working area of the machine.
  • ALWAYS be sure operator is familiar with proper safety precautions and operation techniques before using rammer.
  • ALWAYS wear protective clothing when operating rammer. Wear goggles or safety glasses, hearing protection, and safety shoes.
  • ALWAYS keep hands, feet, and loose clothing away from moving parts of rammer.
  • ALWAYS use common sense and caution when operating rammer.
  • ALWAYS be sure rammer will not tip over, roll slide, or fall when not being operated.
  • ALWAYS turn engine OFF when rammer is not being operated.
  • ALWAYS guide the rammer in such a way that the operator is not squeezed between the rammer and solid objects. Special care is required when working on uneven ground or when compacting coarse material. Make sure to stand firmly when operating the machine under such conditions.
  • ALWAYS operate the rammer in such a way that there is no danger of it turning over or falling in, when working near the edges of breaks, pits, slopes, trenches and platforms.

Operator Safety while using Internal Combustion Engines

Internal combustion engines present special hazards during operation and fueling! Failure to follow the safety guidelines described below could result in severe injury or death.

WARNING

  • DO NOT smoke while operating rammer.
  • DO NOT smoke when refueling engine.
  • DO NOT refuel hot or running engine.
  • NO NOT refuel engine near open flame.
  • DO NOT spill fuel when refueling engine.
  • DO NOT operate rammer near open flames.
  • ALWAYS refill fuel tank in well-ventilated area.
  • ALWAYS replace fuel tank cap after refueling.
  • ALWAYS check fuel lines, fuel cap, and fuel tank for leaks and cracks before starting engine.
  • Do not run machine if fuel leaks are present, or fuel cap or fuel lines are loose.

Service Safety

Poorly maintained equipment can become a safety hazard! In order for the equipment to operate safely and properly over a long period of time, periodic maintenance and occasional repairs are necessary.

WARNING

  • DO NOT attempt to clean or service rammer while it is running.
  • DO NOT operate rammer with safety devices or guards removed or not in working order.
  • DO NOT operate rammer without air cleaner.
  • DO NOT remove air cleaner paper element, precleaner, or air cleaner cover while operating rammer.
  • DO NOT alter engine speeds. Run engine only at speeds specified in Technical Data Section.
  • ALWAYS replace safety devices and guards after repairs and maintenance.
  • ALWAYS keep area around muffler free of debris in order to reduce to chance of an accidental fire.
  • ALWAYS do Periodic Maintenance as recommended in Operator‟s Manual.
  • ALWAYS clean debris from engine cooling fins.
  • ALWAYS replace worn or damaged components with spare parts designed and recommended by MASALTA for servicing this rammer.

Label Location

Safety and Operating Labels

MASALTA machines use international pictorial labels where needed. These labels are described below:

Prior to Starting the Operation

  • This machine is of oil bath lubrication system.
  • Check the oil level through a window at rear end of the foot. Replenish oil if oil is not visible at the window. For lubrication, use automobile engine oil of 10W-30 SE, SF or better grade. Capacity is 830cc.
  • Fill the fuel tank with regular gasoline (unleaded). Simultaneously, check engine oil and make it a habit to replenish on the earlier side. Low lubrication oil level may result in engine seizure due to consumption during operation. Nevertheless, oil level should be checked prior to start up without fail. For lubrication, use automobile engine oil of 10W-30 SE, SF or better grade. See Engine Operating Manual for further detail.
  • Check every bolt, nut or screwed area for tightness. Loosened due to vibration may result in unexpectedly serious trouble. Be sure to tighten any screwed area.
  • Remove dirt and dust. Particularly clean the vicinity of recoil starter and foot.

Operation

Starting up for Petrol engine

  1. Open the fuel shut-off valve by moving the fuel cock level to the open position.
  2. Set the engine ON/OFF switch to the “ON” position.
  3. Grip the recoil starter handle and pull it until you feel slight resistance. Then pull sharply and quickly. Return the recoil starter handle to the starter case before releasing.
  4. Grip the recoil starter handle and pull it a little to feel a slight resistance. Then pull it powerfully from there. To release the handle do not release it at the position where it has been pulled to, but release it after returning closely to the starter case.
  5. If the engine has started, while listening to explosion sounds, return the choke lever slowly to full-open position. Be sure to perform a warm-up run for the period 3 to 5 minutes at low speed, while paying careful attention to gas leakage or abnormal sound.
  6. If it is difficult to start the engine by repeatedly pulling the starter rope, remove ignition plug and check the sparking performance. If the plug is wet due to excessive fuel intake or soiled, replace the coil or clean sufficiently to its internals. With the ignition plug removed, pull the recoil starter handle 2-3 times to discharge excessive blended gas.

Starting up for machine

  1. Turning the choke level to open the choke. Running the engine for 5 minutes at low speed to warm the engine.
  2. Move the throttle level quickly to the “FULL OPEN” position. DO NOT move the throttle level slowly as this may cause damage to the clutch or spring.
    • Caution: Make sure that the throttle lever is moved to the FULL OPEN position. Operating the rammer at less than full speeds can result in damage to the clutch springs or foot.
  3. After starting to tamping action, adjusts the jumping motion to suit particular soil condition by lightly controlling the throttle lever. When the engine speed falls between the set values shown on the engine, your work can be carried out at the best efficiently. Increasing the engine speed unnecessarily, does not cause the compaction force to increase. On the contrary, a resultant resonance causes the compaction force to decrease, damaging the machine.
  4. Under cold weather, the oil in the machine being viscous, resistance at reciprocating part is greater causing the tamping rammer to perform somewhat irregular movement. Therefore, it is recommended to perform a warm-up run while moving the throttle lever repeatedly between ON and OFF positions, before entering the work.
  5. Soil contacting surface of the foot is lined with heat-treated metal sheet for extra strength. However, for compacting cobblestone, use the filling-up soil for example so that the foot hits the soil uniformly.
  6. The tamping rammer has been designed to advance while jumping. For quicker advance, erect the machine by pushing its handle down slightly so that flat surface of the foot at its rear end contacts the ground.
  7. To stop the tamping action, move throttle lever quickly from the FULL OPEN to IDLE position.

To Stop

Normal shutdown

  1. With the throttle lever closed from ON to OFF, run the engine for 3-5 minutes at low speed, and after temperature is lowered, turn the switch to the “OFF” position.
  2. Close the fuel shut-off valve by moving the fuel cock lever to the CLOSED position.

Emergency shutdown

  • Move the throttle lever quickly to the IDLE position, and turn the engine ON/OFF switch to the OFF position.

Maintenance and Storage

Periodic Maintenance Schedule

 | Daily Before Starting| After First 5

hours

| Every Week or

25 hours

| Every month or

100 hours

| Every 3 months

or

300 hours

---|---|---|---|---|---
Check fuel level.| ●|  |  |  |
Check oil level of machine.| ●|  |  |  |
Check fuel line and fittings for cracks or

leaks.

| ****

|  |  |  |
Tighten ramming shoe hardware.|  | ●| ●|  |
Check and tighten engine cylinder screws.|  | ●| ●|  |
Check and tighten external hardware.|  | ●| ●|  |
Clean engine cooling fins.|  |  | ●|  |
Clean and check spark plug gap.|  |  | ●|  |
Replace spark plug.|  |  |  | ●|
Clean recoil starter.|  |  |  |  | ●
Change ramming system oil. *|  |  |  |  | ●
Clean engine muffler and exhaust port.|  |  |  |  | ●

  • Change ramming system oil after first 50 hours of operation.

Note: If engine performance is poor, check, clean, and replace air filter elements as needed.

Air Cleaner Cleaning for MR75R (6 to 12 months Service)

Remove element from pre-cleaner at the top of crank case and clean it with cleaning oil (kerosene). Take of „Bolt, Cover‟ of the crankcase upper part and take „Element‟ off „AIR CLEANER‟. Wet the bottom element (gray) with 7-9cc and let upper element (yellow) be familiar with oil. MR75R is the top element (yellow) with 2-5cc and bottom element (gray) with 13-15cc of engine oil SAE 10W-30 squeeze out the oil before installing them. Air cleaner of 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.

Storage

Rammer should be stored in such position as it is placed on level, after engine and machine have been cooled down. Be sure to secure the rammer as necessary to avoid falling down. If the rammer has to be laid down inevitably, tighten fuel tank cap and engine oil plug securely and wait until engine and machine are cooled down. After laying it down, make sure that there is no leak of fuel or oil. (If fuel leaks, drain the tank)

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.

Specification

Model MR60R MR65R MR75R EMR75M
Motor Robin EH09 Robin ER12 Robin EH12-2D MG165
Power kW (hp) 2.1 (2.8) 2.9 (4.0) 3.0 (4.0) 3.2(4.3)
Operation Mass kg (lb) 60 (132) 65 (143) 75 (165) 74 (163)
Impact Force kN 10.7 13 13.8 13.8
Jumping Stroke mm 50-85 40-80 40-80 40-80
Fuel Tank Capacity l 2.8 2.8 2.8 2.8
Shoe Size mm 335×265 330×285 330×285 330×285

Acoustic Noise (According to 2000/14/EC)

  MR60R MR75R MR75R EMR75M
Measured sound power level 103dB 103dB 103dB 103dB
Guaranteed sound power level 104dB 104dB 104dB 104dB
Sound Power Level Limit 108dB 108dB 108dB 108dB

Working Size (L x W x H):

  • MR60R: 710 x 440 x 1060 mm
  • MR65R: 710 x 440 x 1060 mm
  • MR75R: 760 x 430 x 1020 mm
  • EMR75M: 760 x 430 x 1020 mm

Hand-Arm vibration Specification (According to ISO 5394, EN 1033 and EN500-4): 7.0m/s2

Transportation

  1. Shutdown engine for transportation.
  2. For transportation, tighten fuel tank cap securely and close fuel cock to prevent fuel from spilling.
  3. Drain fuel for transportation over long distance or bad road.
  4. Secure machine firmly to prevent it from moving or tipping.
  5. Rammer should be transported in such position as it is placed on level ground.
  6. Make sure lifting device has enough capacity to hold machine (see identification plate on machine for weight). Use central lifting point (a) when lifting machine.
  7. Use trolley kit (supplied as optional) for short distance transportation.
  8. Do not lay down during transportation.( )

Troubleshooting Guide

Rammer Troubleshooting

SYMPTOM POSSIBLE PROBLEM SOLUTION
Engine rotates but amplitude not uniform or does not strike Operating speed
of throttle lever is incorrectly set? Set throttle lever to correct position.
Oil in excess? Drain excess oil. Bring to correct level.
Clutch slips? Replace or adjust clutch.
Spring Failure? Replace spiral spring.
Speed of engine improper? Adjust engine speed to correct operating RPM

setting.

MASALTA ENGINEERING CO., LTD

References

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