Lasko MT-84FA User Manual

Size:
3.97 Mb
Download

OPERATION AND PARTS MANUAL

SERIES

MODEL MT-84FA

TAMPING RAMMER

(ROBIN GASOLINE ENGINE)

Revision #0 (06/10/05)

To find the latest revision of this publication, visit our website at: www.multiquip.com

THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.

MT-84FA— PROPOSITION 65WARNING

PAGE 2 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

NOTE PAGE

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 3

MULTIQUIP TAMPING RAMMER MT-84FA

Proposition 65 Warning .........................................

2

Table Of Contents .................................................

4

Parts Ordering Procedures ...................................

5

Safety Message Alert Symbols ..........................

6-7

Rules For Safe Operation ..................................

8-9

Operation and Safety Decals .........................

10-11

General Information ............................................

12

Specifications ......................................................

13

Controls and Components ..................................

14

Basic Engine .......................................................

15

Operation .......................................................

16-18

Maintenance .......................................................

19

Troubleshooting Guide ...................................

20-21

Explanation Of Codes In Remarks Column ........

22

Suggested Spare Parts .......................................

23

Name Plate and Decals .................................

24-25

Crankcase and Engine Assembly ..................

26-29

Guide Cylinder and Foot Assembly ...............

30-31

Tank and Handle Assembly ...........................

32-33

MT-84FA—TABLEOF CONTENTS

ROBIN EH-12-2D46420ENGINE

Crankcase and Cylinder Assembly ................

34-35

Crankshaft and Piston Assembly ...................

36-37

Muffler, Air Cleaner, Camshaft,& Carb.Assy. .

38-39

Governor Assembly .......................................

40-41

Recoil Starter and Blower Assembly .............

42-43

Magneto Assembly ........................................

44-45

Carburetor Assembly .....................................

46-47

Terms and Condition Of Sale Parts ................

48

Specification and part number are subject to change without notice.

PAGE 4 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

MT-84FA— PARTS ORDERING PROCEDURES

When ordering parts,

please supply the following information:

Dealer account number

Dealer name and address

Shipping address (if different than billing address)Return fax number

Applicable model number

Quantity, part number and description of each part

Specify preferred method of shipment:

Note:Unlessotherwiseindicatedbycustomer,all

 

FedEx or UPS Ground

orders are treated as “Standard Orders”, and will

 

FedEx or UPS Second Day or Third Day

ship within 24 hours.We will make every effort to

 

FedEx or UPS Next Day

ship “Air Shipments” the same day that the order is

 

Federal Express Priority One

received, if prior to 2PM west coast time. “Stock

 

DHL

Orders” must be so noted on fax or web forms.

Truck

Here’s how to get help...

Please have the model and serial number on hand when calling.

Parts Department

 

800-427-1244

Fax: 800-672-7877

310-537-3700

Fax: 310-637-3284

 

 

Mayco Parts

 

800-306-2926

Fax: 800-672-7877

310-537-3700

Fax: 310-637-3284

 

 

Service Department

 

800-478-1244

Fax: 310-537-4259

310-537-3700

 

MQ Power Service Department

800-835-2551Fax:310-638-8046

310-537-3700

Technical Assistance

 

800-478-1244

Fax: 310-631-5032

 

 

Warranty Department

 

800-421-1244,Ext. 279

Fax: 310-537-1173

310-537-3700,Ext. 279

 

Multiquip’s Main Phone Numbers

800-421-1244Fax:310-537-3927

310-537-3700

MULTIQUIP INC.

18910 WILMINGTON AVENUE POST OFFICE BOX 6254 CARSON, CALIFORNIA 90749 310-537-3700•800-421-1244FAX:310-537-3927

E-MAIL:mq@multiquip.comWWW:multiquip.com

Place Your Parts Order Via Web or Fax For Even More Savings!

(Domestic USA Dealers Only)

Extra Discounts!

All parts orders which include complete part numbers and are received by our automated web parts order system, or by fax qualify for the following extra discounts:

Ordered

Standard

Stock orders

via

orders

($750 list and above)

Fax

3%

10%

Web

5%

10%

Special freight allowances when you order 10 or more line items via Web or Fax!**

FedEx Ground Service at no charge for freight

No other allowances on freight shipped by any other carrier.

NOTE:DISCOUNTSARESUBJECTTOCHANGE

Direct TOLL-FREEaccess to our Parts Department:

Toll-freenationwide —800-427-1244

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 5

MT-84FA— SAFETY MESSAGE ALERT SYMBOLS

FORYOUR SAFETY AND THE SAFETY OF OTHERS!

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.

This Owner's Manual has been developed to provide complete instructions for the safe and efficient operation of the MQ Mikasa, Model MT-84FA Tamping Rammer. Refer to the engine manufacturers instructions for data relative to its safe operation.

Before using this rammer, ensure that the operating individual has read and understands all instructions in this manual.

SAFETY MESSAGE ALERT SYMBOLS

The three (3) 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 three words: DANGER,

DANGER

You WILL be KILLEDor SERIOUSLY INJUREDif you DO NOT follow these directions.

WARNING

You CAN be KILLED or SERIOUSLY INJUREDif you DO NOT follow these directions.

CAUTION

You CAN beINJURED if youDO NOT follow these directions.

HAZARD SYMBOLS

Potential hazards associated with the operation of a MT84FA Tamping Rammer will be referenced with Hazard Symbols which appear throughout this manual, and will be referenced in conjunction with Safety Message Alert

Symbols.

WARNING Lethal Exhaust Gas Hazards

Engine exhaust gases contain poisonous carbon monoxide. This gas is colorless and odorless, and can cause death if inhaled. NEVER operate this equipment in a confined area or enclosed structure that does not provide ample free flow air.

WARNING Explosive Fuel Hazards

Gasoline is extremely flammable, and its vapors can cause an explosion if ignited.DO NOT start the engine near spilled fuel or combustible fluids.

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 approved containers, inwell-ventilatedareas and away from sparks and flames.

 

WARNING

Burn Hazards

Engine components can generate extreme heat. To prevent burns, DO NOT touch these areas while the engine is running or immediately after operations. Never operate the engine with heat shields or heat guards removed.

 

WARNING

Respiratory Hazards

ALWAYS wear approvedrespiratory protection when required.

PAGE 6 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

MT-84FA— SAFETY MESSAGE ALERT SYMBOLS

 

CAUTION

Rotating Parts Hazards

 

 

 

NEVER operate equipment with covers, or guards removed. Keep fingers, hands, hair and clothing away from all moving parts to prevent injury.

CAUTION Accidental Starting Hazards

ALWAYS place the ON/OFFswitch in the OFFposition when the rammer is not in use.

CAUTION Eye and Hearing Hazards

ALWAYS wear approved eye and hearing protection.

 

CAUTION

Equipment Damage

 

Hazards

 

 

Other important messages are provided throughout this manual to help prevent damage to your light tower, other property, or the surrounding environment.

DANGER

Refueling Hazard

NEVER refuel rammer when placed in truck bed with plastic liner.The possibility exists of explosion due to static electricity. When adding fuel, remove rammer from truck bed and place on ground.

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 7

MT-84FA— RULES FOR SAFE OPERATION

 

DANGER

Read this manual!

 

 

 

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-84FATamping Rammer:

GENERAL SAFETY

DO NOT operate or service this equipment 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-toedboots and other protective devices required by the job.

NEVER operate this equipment when not feeling well due to fatigue, illness or taking medicine.

NEVER operate this equipment under the influence ofdrugs oralcohol.

ALWAYS wear proper respiratory (mask),hearing and eye protection equipment whenoperating the rammer.

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.

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.

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 withhot! components can cause serious burns.

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

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.

ALWAYS refuel in awell-ventilatedarea, away from sparks and open flames.

ALWAYS use extreme caution when working withflammable liquids.When refueling,stop the engine and allow it to cool.DO NOT smoke around

or near the machine. Fire or explosion could result from fuel vapors, or if fuel is spilled on a hot engine.

NEVER operate the rammer in an explosive atmosphere or near

combustible materials. An explosion or fire could result causing severe bodily harm or even death.

DO NOT smoke around or near the machine. Fire or explosion could result from fuel vapors, or if fuel is spilled on a hot engine.

Topping-offto filler port is dangerous, as it tends to spill fuel.

Stop the engine when leaving the rammer unattended.

Maintain this equipment in a safe operating condition at all times.

PAGE 8 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

MT-84FA— RULES FOR SAFE OPERATION

ALWAYS stop the engine before servicing, adding fuel and oil.

NEVER run engine without air filter. Severe engine may occur.

ALWAYS service air cleaner frequently to prevent carburetor malfunction.

ALWAYS check the machine for loosened threads or bolts before starting.

ALWAYS be sure the operator is familiar with proper safety precautions and operations techniques before using rammer.

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.

DO NOT operate this equipment unless all guards and safety devices are attached and in place.

CAUTION must be exercised while servicing this equipment. Rotating and moving parts can cause injury if contacted.

Keep all inexperiencedand unauthorizedpeople away from the equipment at all times.

Unauthorized equipment modifications will void all warranties.

NEVER pour or spray water over the engine.

Test the engineON/OFF switch before operating.The purpose of this switch is to shut down the engine of the rammer.

Refer to the ROBIN Engine Owner's Manualfor engine technical questions or information recommended by

Multiquip for this equipment.

TRANSPORTING

ALWAYS shutdown engine before transporting.

Tighten fuel tank cap securely and close fuel cock to prevent fuel from spilling.

Drain fuel when transporting rammer over long distances or bad roads.

When placing the rammer inside a truck-bedfor transport, alwaystie-downthe rammer

MAINTENANCE

NEVER lubricate components or attempt service on a running rammer.

ALWAYS allow the rammer a proper amount of time to cool before servicing.

Keep the rammer in proper running condition.

Fix damage to the rammer immediately and always replace broken parts.

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.

EMERGENCIES

ALWAYS know the location of the nearestfire extinguisher andfirst aid kit.

In emergencies always know the location of the nearest phone orkeep a phone on the job site. Also know the phone numbers of the nearestambulance,doctor andfire department. This information will be invaluable in the case of an emergency.

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 9

MT-84FA— OPERATION AND SAFETY DECALS

Machine Safety Decals

The MQ Mikasa tamping rammer is equipped with a number of safety decals.These decals are provided for operator safety and maintenance information. Figure 1 and 1A below and preceeding page illustrates these decals as they appear on the machine. Should any of these decals become unreadable, replacements can be obtained from your dealer.

Figure 1. Rammer Operation and Safety Decals

PAGE 10 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

MT-84FA— OPERATION AND SAFETY DECALS

Figure 1A. Rammer Operation and Safety Decals

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 11

MT-84FA—GENERALINFORMATION

Definition of Tamping Rammer

The Mikasa MT-84FAtamping rammer is a powerful compacting tool capable of applying a tremendous force in consecutive impacts to a soil surface. Its applications include soil compacting for road, embankments and reservoirs as well as backfilling for gas pipelines, water pipelines and cable installation work.

The impact force of the MT-84FAlevels and uniformly compacts voids between soil particles to increase dry density.

Circular motion is converted to create impact force.The MT-84FAtamping 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-84FAis equipped with anair-cooled,four-cyclegasoline engine. Transmission of the power takes place by increasing the engine speed to engage the centrifugal clutch.

Rammer Gearbox and Spring Cylinder

The Mikasa MT-84FAuses 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-84FATamping Rammer identify and understand the function of the controls, see Figure 2.

 

CAUTION

Handle Operation

 

 

 

Before starting operation check the lifting handle to:

1.Make sure that there is no damage on the bolts.

2.Make sure that there is no crack or breakage on handle.

3.Make sure that there is no fissure on the surface. If there is any abnormality or damage, replace with new one.

For operation:

This handle is to be used to lift up the shoe part of the machine with the body laid down on the ground or truck bed.

1.Use proper lifting techniques to avoid back injury.This handle is for manual lifting only.

2.Do not use this handle as a rammer lift point. Use the lifting point on the top of the machine.

3.Do not move the rammer with the lifting handle and the front rollers more than (16 feet) 5 meters.

PAGE 12 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

 

 

 

 

MT-84FA— SPECIFICATIONS

 

 

 

 

 

 

 

Table 1. MT-84FARammer Specifications

 

 

 

 

 

 

 

 

 

 

MODEL

 

MT-84FA

 

 

 

 

 

 

 

 

 

Overall Height

 

41.5 in. (1055 mm)

 

 

 

 

 

 

 

 

 

Overall Width

 

16.1 in (410 mm)

 

 

 

 

 

 

 

 

 

Over Length

 

28.9 in (735 mm)

 

 

 

 

 

 

 

 

 

Shoe Size L x W

 

13.4 x 11.2 in. (340 x 285 mm)

 

 

 

 

 

 

 

 

 

 

Blows/minute

 

660-700

 

 

 

 

 

 

 

 

 

 

Impact Force

 

3,500 lbs (1,600 kg)

 

 

 

 

 

 

 

 

 

Stroke

 

3.15 in (80 mm)

 

 

 

 

 

 

 

 

 

Clutch

 

Automatic Centrifugal

 

 

 

 

 

 

 

 

 

Travel Speed

 

26.2 - 36.1 ft/min (8 - 11 m/min)

 

 

 

 

 

 

 

 

 

Lubrication System

 

Oil Bath-10W-30Motor Oil

 

 

 

 

 

 

 

 

 

Fuel Capacity

 

2.1 q (2.0 liters)

 

 

 

 

 

 

 

 

 

Operating Weight (W/Fuel)

 

203 lbs. (92 kg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2. EH12-2D46420Engine Specifications

 

 

 

 

 

 

 

 

 

 

MODEL

ROBIN EH12-2D4646420

 

 

 

 

 

 

 

 

 

 

Type

Air-Cooled4 Stroke Gasoline Engine

 

 

 

 

 

 

 

 

 

 

Piston Displacement

7.38 cu.in. (121 cm3)

 

 

 

 

 

 

 

 

 

 

Max. Output

3.5 HP (2.6 kw)

 

 

 

 

 

 

 

 

 

 

Setting Speed

3,500 - 3,700 rpm

 

 

 

 

 

 

 

 

 

 

Cooling System

Air-Cooled

 

 

 

 

 

 

 

 

 

 

Lubrication System

Oil Bath - 10W30 Motor Oil

 

 

 

 

 

 

 

 

 

 

Oil Tank Capacity

0.8 pint (0.4 liter)

 

 

 

 

 

 

 

 

 

 

Fuel

Unleaded gasoline

 

 

 

 

 

 

 

 

 

 

Fuel Tank Capacity

2.1 quart (2 liters)

 

 

 

 

 

 

 

 

 

 

Starting System

Recoil Starter

 

 

 

 

 

 

 

 

 

 

Carburetor System

Diaphragm

 

 

 

 

 

 

 

 

NOTE

Specifications are general and are subject to change without notice. If exact

 

 

measurements are required, equipment should be weighed and measured.

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 13

MT-84FA— CONTROLS AND COMPONENTS

Figure 2. MT-84FARammer

Figure 2 shows the location of the controls and components for the MT-84FATamping 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-OffValveSupplies fuel from the fuel tank to the engine.To begin fuel flow move the fuelshut-offvalve downward.

5.OilBathFillPlug– Openthisplugtoaddoiltotheoilbath reservoir.

6.Drain Valve – Open this valve to remove oil from the bellows.

7. PreCleaner – Pre-cleans(first stage) dirt and other debris from entering the engine.

8.FootLaminated 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 starterhandlesharply andquickly,thenreturnstarter 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 rammerGRIP handle assembly 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.Nameplate– Displaysinformationregardingtherammer.

PAGE 14 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

MT-84FA— BASIC ENGINE

 

Figure 3. Robin EH-12-2DEngine Controls and Components

INITIAL SERVICING

 

 

 

The engine (Figure 3) must be checked for proper lubrication and

5.

Recoil Starter (pull rope) – Manual-starting method. Pull

filledwith fuel priortooperation. Refer tothe manufacturers Engine

 

the starter grip until resistance is felt, then pull briskly and

manual for instructions & details of operation and servicing.

 

smoothly.

 

1.

Secondary Air Cleaner – Prevents dirt and other debris

6.

Engine ON/OFF Switch – Controls the starting and

 

from entering the fuel system. Remove wing-nuton top of

 

stopping of the engine. Switch must be in the "ON" position

 

air filter cannister to gain access to filter element.

 

when starting the engine.

2.

Choke Lever Usedwhen starting the engine. Normally

 

 

 

 

used in cold weather conditions. In cold weather turn the

 

 

Operating the engine without an

 

choke lever to the fully closed position, in warm weather

 

NOTE

air filter, with a damaged air filter,

 

set choke lever half way or completely open.

 

or a filter in need of replacement

 

 

 

3.

Spark Plug – Provides spark to the ignition system. Set

 

 

will allow dirt to enter the engine,

 

 

causing rapid engine wear.

 

spark plug gap to 0.6 - 0.7 mm (0.024 - 0.028 inch). Clean

 

 

 

 

 

 

 

spark plug once a week.

 

 

 

4.

Muffler – Used to reduce noise and emissions.

 

 

 

WARNING

Enginecomponentscangenerateextremeheat. 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.

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 15

This section is intended to assist the operator with the initial start-upof theMT-84FATampingRammer.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

Failure to understand the operation of the MT-84FATampingRammer 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.Checktheoillevelthroughtheoillevelsightglass(Figure4) at the rear of the tamper foot.

Figure 4. Foot Housing Sight Glass

2.If oil is not visible, add 10W-30motor oil into the oil fill plug opening (Figure 2). The bath contains approximately 1.7 pints (800 cc.)

The oil bath level should be kept NOTE at the half way point of the sight

glass.

MT-84FA— OPERATION

Fuel Check

1.Check the fuel level in the fuel tank.If the fuel level is low, fill the fuel tank (Figure 5) with clean unleaded gasoline.

Figure 5. Fuel Tank

Engine Oil Check

1.To check the engine oil level, place the rammer on secure level ground with the engine stopped.

2.Remove the filler dipstick from the engine oil filler hole (Figure 6) and wipe it clean.

Figure 6. Engine Oil Dipstick

3.Insert and remove the dipstick without screwing it into the filler neck. Check the oil level shown on the dipstick.

4.If the engine oil level is low, fill to the edge of the oil filler hole with the recommended oil type (Table 3).See Table 2 for the oil capacity of your type engine.

Table 3 Motor Oil Grade

Season or Temperature

Grade of motor oil

(higher than MS class)

 

 

 

 

Spring, Summer or Autumn

SAE 30

+120° F to +15° F

 

 

 

 

Winter

 

SAE 30

+40° F to +15°

F

 

 

 

 

Below +15° F

 

SAE 10W-30

 

 

 

PAGE 16 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

Inspection

1. Check all nuts, bolts fasteners for tightness. Retighten as necessary.

2.Clean anydirtfromtherecoil starterand footpedestal. Wipe the entire unit clean before operating.

3.ReplaceanymissingordamagedSafetyOperationdecals.

4.Adjustheightofhandle.Adjusthandlebylooseningnutsand moving handle to suit operation. Retighten nuts.

MT-84FA— OPERATION

3.Close the choke lever Figure 9 and move the throttle lever to the "Full Open" position. Turning the choke lever 90 degreesclockwiseclosesthechoke.Incoldweather,startthe unit with choke fully closed. In warm weather or when the engine is warm, the unit can be started with choke halfway orcompletelyopen.

Initial Start-up

When starting the MT-84FATamping Rammer perform the following:

1.Openthe fuelshutoff valve bymoving thefuel cock lever to theopen position (Figure 7).

Figure 9. Choke Lever

4. Griptherecoilstarter (Figure10)handleandpullituntilyou feelaslightresistance.Thenpullsharplyandquickly.Return therecoilstarterhandletothestartercasebeforereleasing.

Figure 7. Fuel Cock

2.Set the engine ON/OFF switch (Figure 8) to the "ON" position (START).

Figure 8. Recoil Starter

5. Ifenginefailstostart,movethechokelever(Figure9) tothe half open position to avoid flooding.

6. Repeat steps 1 thru 4.

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.

Figure 8. On/Off Switch

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 17

Operation

1.To start the rammer tamping action, move the throttle lever (Figure 11) quickly from IDLE (close) to theFULL OPEN position.DONOTmovethethrottleleverslowlyasthismay cause damage to the clutch or spring.

Figure 11. Throttle Lever (Full Open)

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

2.The MT-84FAtamping rammer is designed to run at 4,000 rpm. At optimum rpm the foot hits at the rate of 660~700 impacts per minute. Increasing throttlespeedpastfactory setrpmdoesnotincreaseimpactsand maydamageunit.TheMT-84FAis designed to advance while tamping.For faster advance, pull back slightlyon the handle so that rearof foot contactssoilfirst.

MT-84FA— OPERATION

3.To stop the tamping action, move throttle lever quickly from the FULL OPEN toIDLE position.

Stopping The Engine

Normal Shutdown

1.Move throttle lever quickly from the FULL OPEN toIDLE position (Figure 12) and run the engine for three minutes at lowspeed.Aftertheenginecools,turntheenginestart/stop switch to the “STOP” position (Figure 8) until engine comes to a complete stop.

Figure 12. Throttle Lever (Idle)

2.Closethefuelshut-offvalvebymovingthefuelcocklevertotheCLOSED position. See Figure 5.

Emergency Showdown

1.MovethethrottleleverquicklytotheIDLE position,andturn the engine start/stop switch to theSTOP position.

PAGE 18 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)

Maintenance

Perform the scheduled maintenance procedures as indicated:

DAILY

Thoroughly remove dirt and oil from the engine and control area.Clean or replace the air cleaner elements as necessary. Check and retighten all fasteners as necessary. Check the spring box and bellows for oil leaks. Repair or replace as needed.

WEEKLY

Remove the fuel filter cap and clean the inside of the fuel tank.

Remove or clean the filter at the bottom of the tank.

Remove and clean the spark plug, then adjust the spark gap to 0.02~0.03 inch (0.6~0.7 mm). This unit has electronic ignition, which requires no adjustments.

Clean air cleaner cover.

200 - 300 HOURS (Pre-Cleaner)

Remove the element from the pre-cleaner(Figure 13) at the top of the crankcase (body side) and clean it with cleaning oil (kerosene).

PRE-CLEANER

MT-84FA— MAINTENANCE

■ The air cleaner (Figure 14 ) 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.

Figure 14. Engine Air Cleaner

200 - 300 HOURS (Oil Bath)

Drain oil reservoir on foot housing (Figure 15). Refill with approximately 1.7 pt. (800cc) of 10W-30motor oil. Oil should be midway in sight glass. Break in oil should be changed after first 50 hours.

 

YELLOW

GRAY

2-5CC

 

13 -15CC

SAE 30

 

SAE 30

 

Figure 13. 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-30and completely squeeze out the excess oil from the element before installing.

Figure 15. Foot Housing Drain Plug

Yearly

Check the fuel line and the oil line regularly for damage and to ensure that there are no leaks.

Replace the oil and fuel lines every two years to maintain the performance and flexibility lines.

Long Term Storage

Drain fuel from fuel tank, fuel line and carburetor.

Remove spark plug and pour a few drops of motor oil into cylinder. Crank engine 3 to 4 times so that oil reaches all internal parts.

Clean exterior with a cloth soaked in clean oil.

Store unit covered with plastic sheet in moisture free and dust free location out of direct sunlight

MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05) — PAGE 19

MT-84FA—TROUBLESHOOTINGGUIDE

TABLE 4. ENGINE TROUBLESHOOTING

SYMPTOM

POSSIBLE PROBLEM

SOLUTION

 

 

 

Difficult to start

 

 

 

 

 

 

Ignition plug being bridge?

Check ignition system.

 

 

 

Fuel is available but spark plug

Carbon deposit at ignition?

Clean or replace ignition.

 

 

will not ignite. (Power available

Short circuit due to defective

Replace insulators.

at high tension cable).

insulators?

 

 

 

 

 

 

 

Improper spark gap?

Set spark plug gap to the correct gap.

 

 

 

Fuel is available but spark plug

Short circuit at stop switch?

Check stop switch circuit. Replace stop switch if defective.

will not ignite. (Power NOT

 

 

 

 

available at high tension cable).

Ignition coil defective?

Replace ignition coil.

 

 

 

 

Muffler clogged with carbon

Clean or replace muffler.

 

deposits?

 

Fuel is available and spark plug

 

 

Fuel in use inadequate (water,

Flush fuel sytem and replace with fresh fuel.

ignites (compression normal).

dust)?

 

 

 

 

 

 

 

Air Cleaner clogged?

Clean or replace air cleaner.

 

 

 

 

Defective cylinder head gasket?

Tighten cylinder head bolts or replace head gasket.

Fuel is available and spark plug

 

 

Cylinder worn?

Replace cylinder.

ignites (compression low ).

 

 

 

Spark plug loose?

Tighen spark plug.

 

 

 

Operation not satisfactory

 

 

 

 

 

 

Air cleaner clogged?

 

 

 

 

Not enough power available

Air in fuel line?

Bleed (remove air) from fuel line.

 

 

(compression normal, no miss-

Fuel level in carbureator float

 

firing).

Adjust carbureator float

chamber improper?

 

 

 

 

 

 

Carbon deposits in cylinder?

Clean or replace cylinder

 

 

 

 

Ignition coil defective?

Flush fuel sytem and replace with fresh fuel.

Not enough power available

 

 

Ignition plug often shorts?

Replace ignition wires, clean ignition.

(compression normal, miss-

 

 

firing).

Fuel in use inadequate (water,

Flush fuel sytem and replace with fresh fuel.

 

 

dust)?

 

 

 

 

 

Excessive carbon depostion in

Clean or replace crankcase.

 

combustion chamber?

 

 

 

 

Engine overheats.

Exhaust or muffler clogged with

Clean or replace muffler.

 

carbon.

 

 

 

 

 

Spark plug heat value incorrect?

Replace spark plug with correct type spark plug.

 

 

 

PAGE 20 — MT-84FA— OPERATION & PARTS MANUAL — REV. #0 (06/10/05)