Multiquip MTR40SF User Manual

OPERATION AND PARTS MANUAL

SERIES

MODEL MTR40SF

TAMPING RAMMER

(ROBIN EH092F GASOLINE ENGINE)

Revision #0 (11/28/12)

To find the latest revision of this

publication, visit our website at:

www.multiquip.com

THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

PROPOSITION 65 WARNING

PAGE 2 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

NOTES

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 3

TABLE OF CONTENTS

MTR40SF Rammer

Proposition 65 Warning ........................................... 2

Table Of Contents .................................................... 4

Parts Ordering Procedures ...................................... 5

Safety Information ................................................6-9

Specifications ........................................................ 10

General Information ............................................... 11

Components .......................................................... 12

Basic Engine .......................................................... 13

Inspection ......................................................... 14-15

Operation .......................................................... 16-17

Maintenance ..................................................... 18-20

Troubleshooting ................................................21-23

Explanation Of Code In Remarks Column............. 24

Suggested Spare Parts ......................................... 25

Component Drawings

Nameplates And Decals ................................... 26-27

Crankcase And Engine Assy ............................ 28-31

Guide Cylinder Assy ......................................... 32-33

Fuel Tank And Handle Assy .............................. 34-35

Foot Assy .......................................................... 36-37

Narrow Foot Assy. (Option) ............................... 38-39

Trench Shoe Assy ............................................. 40-41

Robin EH09-2F Engine

Crankcase Assy. ............................................... 42-43

Crankshaft, Piston Assy. .............................................44-45

Intake, Exhaust Assy. ........................................ 46-47

Carburetor Assy. ............................................... 48-49

Air Cleaner Assy. .............................................. 50-51

Governor, Operation Assy. ..................................... 52-53

Blower Housing Assy. ....................................... 54-55

Recoil Starter Assy. .......................................... 56-57

Electric Device Assy. ......................................... 58-59

Accessories ...................................................... 60-61

Terms And Conditions Of Sale — Parts ................ 62

NOTICE

Specifications and part numbers are subject to change
without notice.

PAGE 4 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

PARTS ORDERING PROCEDURES

Ordering parts has never been easier!

If you have an MQ Account, to obtain a Username

Effective:

Choose from three easy options:

January 1st, 2006

Best Deal!

Order via Internet (Dealers Only):

Order parts on-line using Multiquip’s SmartEquip website!

■ View Parts Diagrams

■ Order Parts

■ Print Specifi cation Information

Goto www.multiquip.com and click on

Order Parts

to log in and save!

Order via Fax (Dealers Only):

All customers are welcome to order parts via Fax.
Domestic (US) Customers dial:
1-800-6-PARTS-7 (800-672-7877)

Order via Phone:

Non-Dealer Customers:

Contact your local Multiquip Dealer for
parts or call 800-427-1244 for help in
locating a dealer near you.

and Password, E-mail us at: parts@multiquip.

com.

To ob tain an MQ Ac cou nt , co nta ct yo ur
District Sales Manager for more information.

Use the internet and qualify for a 5% Discount
on Standard orders for all orders which include
complete part numbers.*

Fax your order in and qualify for a 2% Discount
on Standard orders for all orders which include
complete part numbers.*

Domestic (US) Dealers Call:

1-800-427-1244

International Customers should contact
their local Multiquip Representatives for
Parts Ordering information.

Note: Discounts Are Subject To Change

Note: Discounts Are Subject To Change

When ordering parts, please supply:

❒ 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

NOTICE

All orders are treated as Standard Orders and will

ship the same day if received prior to 3PM PST.

❒ Specify Preferred Method of Shipment:
✓ UPS/Fed Ex ✓ DHL

■ Priority One ✓ Truck

■ Ground

■ Next Day

■ Second/Third Day

www.multiquip.com

WE ACCEPT ALL MAJOR CREDIT CARDS!

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 5

SAFETY INFORMATION

Do not operate or service the equipment before reading

Potential hazards associated with the operation of this

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 specifi cally 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.

equipment will be referenced with hazard symbols which
may appear throughout this manual in conjunction with
safety messages.

CAUTION

Indicates a hazardous situation which, if not avoided,
COULD result in MINOR or MODERATE INJURY.

NOTICE

Addresses practices not related to personal injury.

PAGE 6 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

GENERAL SAFETY

CAUTION





 ALWAYS know the location of the nearest phone or keep a

Also, know the phone numbers of

This

information will be invaluable in the case of an emergency.

emergency or safety devices.

Disconnection of these devices can cause severe injury,
bodily harm or even death. Disconnection of any of these

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

Use the machine with confi dence for tamping earth and

use the machine

keep the machine in proper running condition.

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.

 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.

SAFETY INFORMATION

phone on the job site.
the nearest ambulance, doctor and fi re department.

RAMMER SAFETY

DANGER

NEVER operate this equipment when not

feeling well due to fatigue, illness or when
under medication.

NEVER operate this equipment under the infl uence 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

qualifi ed personnel 18 years of age and older.

Whenever necessary, replace nameplate, operation and

safety decals when they become diffi cult read.

Manufacturer does not assume responsibility for any

accident due to equipment modifi cations. Unauthorized
equipment modifi cation 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.

 NEVER operate the equipment in an explosive

atmosphere or near combustible materials. An
explosion or fi re could result causing severe

bodily harm or even death.

WARNING

 NEVER disconnect any

These devices are intended for operator safety.

devices will void all warranties.

 DO NOT

also result in premature machine wear due to uneven
loads on the machine.

sand, soil, gravel, and asphalt. DO NOT
for other types of jobs.

CAUTION

 NEVER lubricate components or attempt service on a

running machine.

NOTICE

ALWAYS know the location of the nearest

fi re extinguisher.

ALWAYS know the location of the nearest

fi rst aid kit.

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 7

 ALWAYS

 Fix damage to machine and replace any broken parts

immediately.

 ALWAYS

SAFETY INFORMATION

ENGINE SAFETY



FUEL SAFETY

DO NOT add fuel to equipment if it is placed inside truck

start the engine near spilled fuel or combustible
fl uids. Fuel is extremely fl ammable and its vapors can

overfi ll tank, since spilled fuel could ignite if it

comes into contact with hot engine parts or sparks from

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 fl ow
of cooling air. NEVER operate
this equipment in any enclosed
or narrow area where free fl ow
of the air is restricted. If the air
fl ow is restricted it will cause
injury to people and property
and serious damage to the
equipment or engine.

WARNING

 D O NOT pl ace h ands or fingers inside engine

compartment when engine is running.

 NEVER operate the engine with heat shields or

guards removed.

DANGER



bed with plastic liner. Possibility exists of explosion or
fi re due to static electricity.

 DO NOT

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,

muffl er or cylinder. Allow these parts to cool
before servicing equipment.

NOTICE

 NEVER run engine without an air fi lter or with a dirty air

fi lter. Severe engine damage may occur. Service air fi lter
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.

cause an explosion if ignited.

 ALWAYS refuel in a well-ventilated area, away from

sparks and open fl ames.

 ALWAYS use extreme caution when working with

fl ammable liquids.

 DO NOT fi ll the fuel tank while the engine is running

or hot.

 DO NOT

the ignition system.

 Store fuel in appropriate containers, in well-ventilated

areas and away from sparks and fl ames.

 NEVER use fuel as a cleaning agent.

 DO NOT smoke ar ound or near the

equipment. Fire or explosion could result
from fuel vapors or if fuel is spilled on a
hot engine.

PAGE 8 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

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.

SAFETY INFORMATION

 Use adequate lifting cable (wire or rope) of suffi cient

strength.

 Use one point suspension hook and lift straight

upwards.

 DO NOT lift machine to unnecessary heights.

 ALWAYS tie down equipment during transpor t 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 fi lters.

 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.

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 9

SPECIFICATIONS

Table 1. Rammer Specifications

Overall Height 43.7 in. (1,110 mm))

Overall Width 13.8 in. (351 mm)

Over Length 24.5 in. (622 mm)

Shoe Size (W x L) 5.9 x 10.6 in. (150 x 270 mm)

No. of Impacts Per Minute 650 ~ 699

Tamping Area 1,453 sq. ft. per hr (135 sq.m per hr)

Impact Force 1,215 lbs./blow ( 550 kg/blow)

Clutch Automatic Centrifugal

Travel Speed 30 fpm (9 mpm))

Stroke (Jump Height) 2.2 in. (55 mm)

Operating Weight 101 lbs. (46 kg)

Table 2. Engine Specifications

Model Robin EH092F45010 Engine

Type

Bore x Stroke

Piston Displacement 5.24 cu. in (86 cm3)

Max. Output 3.3 H.P./4100 R.P.M. (2.5 kW))

Fuel Unleaded gasoline

Fuel Tank Capacity 2.1 quarts (2.0 liters)

Lube Oil Capacity 0.79 gal. (0.3 liters)

Speed Control Method Centrifugal Fly-weight Type

Spark Plug NKG BMR4A

Air Cleaner Dual Element Type

Ignition System Flywheel Magneto (Soild State)

Starting Method Recoil Start

Dimension (L x W x H)

Air-cooled 4-stroke, single cylinder, OHV,

horizontal shaft gasoline engine

2.01 in. X 1.65 in.

(51 mm x 42 mm)

9.1 x 11.6 X 13.0 in.

(232 X 295 X 330 mm.)

Dry Net Weight Dry Net Weight 20.7 lbs. (9.4 Kg.)

PAGE 10 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

GENERAL INFORMATION

The Multiquip MTR40SF tamping rammer is a powerful
compacting tool capable of applying a tremendous force
in consecutive impacts to a soil surface. Its applications
include soil compacting for r backfilling for gas pipelines,
water pipelines and cable installation work.

The impact force of the MTR40SF levels and uniformly
compacts voids between soil particles to increase dry
density.

Circular motion is converted to create impact force.
The MTR40SF tamping rammer develops a powerful
compacting force at the foot of the rammer. To maintain
optimum performance, proper operation and service are
essential.

The MTR40SF 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 Mikasa MTR40SF uses zerk grease fittings to lubricate
the spring cylinder and crankcase bearings. Lubricate these
grease fittings as indicated in the maintenance section of
this manual.

CAUTION

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.

Before starting the MTR40SF Tamping Rammer identify
and understand the function of the controls.

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

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 11

COMPONENTS

8

7

1

3

2

9

6

11

5

11

10

4

Figure 1. MTR40SF Rammer

Figure 1 shows the location of the controls and components
for the MTR40SF Tamping Rammer. The functions of each
control is described below:

1. Throttle Lever — Used to adjust engine speed (rpm).
Move lever forward (SLOW) to reduce engine speed,
move lever back toward operator (FAST) to increase
speed.

2. Fuel Shut-Off Valve — Supplies fuel from the fuel tank
to the engine. To begin fuel flow, move the fuel shut-off
valve downward.

3. Primary Air Cleaner — Pre-cleans (first stage) dirt
and other debris from entering the engine.

4. Foot — Laminated wood with tempered steel plate for
superior shock absorption.

5. Grip — When transporting the rammer, carry it by
griping the handle.

6. Nameplate — Displays information regarding the
rammer.

7. Handle — To operate rammer GRIP handle assembly
firmly on both sides.

8. Fuel Tank/Cap — Remove this cap to add unleaded
gasoline to the fuel tank. Make sure cap is tightened
securely. DO NOT over fill.

WARNING

Adding fuel to the ta nk sho uld be
accomplished only when the engine is
stopped and has had an opportunity to
cool down. In the event of a fuel spill, DO

NOT attempt to start the engine until the
fuel residue has been completely wiped up, and the
area surrounding the engine is dry.

9. Engine Air Cleaner — Prevents dirt (second stage)
and other debris from entering the engine.

10. Dust Sleeve — Prevents dust and debris from entering
into the spring cylinder.

11. Zerk Fittings — Lubr icates main springs and
crankcase bearings.

PAGE 12 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

BASIC ENGINE

Figure 2. Robin Engine

The engine (Figure 2) must be checked for proper
lubrication and filled with fuel prior to operation. Refer
to the manufacturer's engine manual for instructions and
details of operation and servicing.

1. Secondary Air Cleaner — Prevents dirt and other
debris from entering the fuel system. Remove wing­nut on top of air filter cannister to gain access to filter
element.

2. 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.

3. Spark Plug — Provides spark to the ignition system.
Set spark plug gap to 0.02 - 0.03 inch (0.6 - 0.7 mm).
Clean spark plug once a week.

4. Engine ON/OFF Switch — Controls the starting and
stopping of the engine. Switch must be in the "ON"
position when starting the engine.

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.

5. Recoil Starter (pull rope) — Manual-starting method.
Pull the starter grip until resistance is felt, then pull
briskly and smoothly.

6. Muffler — Used to reduce noise and emissions.

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.

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 13

INSPECTION

Use only unleaded gasoline. High test ethyl gasoline

is not

recommended.

only

unleaded

gasoline. Motor fuels are

highly flammable

and can be dangerous if mishandled. DO NOT smoke while
refueling. DO NOT attempt to refuel the rammer if the engine
is

hot!or running

.

INSPECTION

Fuel

1. This rammer is equipped with a two-cycled gasoline engine.
Use only unleaded gasoline. High test ethyl gasoline

is not

recommended.

2. If fuel is low, remove the fuel filler cap (Figure 4) and fill with
only

unleaded

gasoline. Motor fuels are

highly flammable

and can be dangerous if mishandled. DO NOT smoke while
refueling. DO NOT attempt to refuel the rammer if the engine
is

hot!or running

.

Figure 4. 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 cap/dipstick from the engine oil filler hole
(Figure 5) and wipe it clean.

INSPECTION

This section is intended to assist the operator with the
inspection of the rammer. 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.

 Check all nuts, bolts fasteners for tightness. Retighten

as necessary.

 Clean any dirt from the recoil starter and engine cooling

fins. Wipe the entire rammer clean before operating.

 Replace any missing or damaged Safety Operation

decals. 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.

Prior to Operation

1. When transporting the rammer, carry it by the grip
handle located on the body (Figure 3).

Fuel

1. This rammer is equipped with a two-cycled gasoline
engine. Use only unleaded gasoline. High test ethyl
gasoline is not recommended.

2. If fuel is low, remove the fuel filler cap (Figure 4) and
fill with onlyunleaded gasoline. Motor fuels are highly
flammable and can be dangerous if mishandled. DO
NOT smoke while refueling. DO NOT attempt to refuel
the rammer if the engine is hot or running.

Figure 4. Fuel Tank

Main Spring and Crankcase Lubrication

1. There are 2 grease fittings (Figure 18) that require
lubrication of the main springs. Lubricate these fittings
as outlined in the maintenance section of this manual.

2. There are 2 grease fittings (Figure 19) that require
lubrication of the crankcase. Lubricate these fittings as
outlined in the maintenance section of this manual.to
replenish it often (Figure 5).

Figure 3. Grip Handle

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 cap/dipstick from the engine oil filler
hole (Figure 5) and wipe it clean.

Figure 5. Engine Oil Dipstick

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

PAGE 14 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

4. If the oil level is low (Figure 6), fill to the edge of the
oil fillerhole with the recommended oil type (Table 3).
Maximum oil capacity is .079 gallons (0.3 liters).

Figure 6. Oil Level

.

Table 3. Motor Oil Grade

INSPECTION

Season or Temperature

Spring, Summer or Autumn
+120° F to +15° F

Winter
+40° F to +15° F

Below +15° F SAE 10W-30

Grade of motor oil

(higher than MS class)

SAE 30

SAE 30

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.

4. Adjust height of handle. Adjust handle by loosening
nuts and moving handle to suit operation. Retighten
nuts.

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 15

OPERATION

Open the

fuel shut- off valve

by moving the

fuel cock

lever to the

open

position (Figure 7).

5 Grip the recoil starter (Figure 11) handle and pull it until you feel

a slight resistance. Then pull sharply and quickly. Return the

Figure 10. Choke Lever (Closed)

4. In cold weather, start the unit with choke lever "Fully Closed"

(Figure 10). In warm weather or when the engine is warm,
the unit can be started with choke halfway or completely
open.

OPERATION

Figure 7. Fuel Shut-Off Valve (Open)

Operation

The following steps outline the procedure for starting the engine:

1. Open the

fuel shut- off valve

by moving the

fuel cock

lever to the

open

position (Figure 7).

5 Grip the recoil starter (Figure 11) handle and pull it until you feel

a slight resistance. Then pull sharply and quickly. Return the
recoil starter handle to the starter position before releasing.

Figure 10. Choke Lever (Closed)

4. In cold weather, start the unit with choke lever "Fully Closed"

(Figure 10). In warm weather or when the engine is warm,
the unit can be started with choke halfway or completely
open.

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

position (start).

OPERATION

Figure 7. Fuel Shut-Off Valve (Open)

Operation

The following steps outline the procedure for starting the engine:

1.

Open the

fuel shut- off valve

by moving the

fuel cock

lever to the

open

position (Figure 7).

5 Grip the recoil starter (Figure 11) handle and pull it until you feel

a slight resistance. Then pull sharply and quickly. Return the
recoil starter handle to the starter position before releasing.

Figure 11. Recoil Starter

6. If engine fails to start, move the choke lever (Figure 10) to
the half open position to avoid flooding.

7. Repeat steps 1 through 6.

8. 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 10. Choke Lever (Closed)

4. In cold weather, start the unit with choke lever "Fully Closed"
(Figure 10). In warm weather or when the engine is warm,
the unit can be started with choke halfway or completely
open.

2.

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

Figure 8. ON/OFF Switch (ON Position)

3. Move the throttle lever to the "IDLE" position (Figure 9).

OPERATION

OPERATION

CAUTION

Failure to understand the operation of the Tamping
Rammer could result in severe damage to the unit or
personal injury.

When starting the MTR40SF, perform the following:

1. Open the fuel shut- off valve by moving the fuel cock
lever to the open position (Figure 7).

.

Figure 7. Fuel ShutOff Valve (Open)

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

4. In cold weather, start the unit with choke lever "Fully
Closed" Figure 10). In warm weather or when the
engine is warm, the unit can be started with choke
halfway or completely open.

Figure 10. Choke Lever (Closed)

5. Grip the recoil starter (Figure 11) handle and pull it
until you feel a slight resistance. Then pull sharply and
quickly. Return the recoil starter handle to the starter
position before releasing.

Figure 8. ON/OFF Switch (ON Position)

3. Move the throttle lever to the "IDLE" position (Figure 9).

Figure 9. Throttle Lever (Idle)

PAGE 16 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

6. If engine fails to start, move the choke lever (Figure 10)

Figure 11. Recoil Starter

to the half open position to avoid flooding.

7. Repeat steps 1 thru 6.

8. If the engine does not start after repeated attempts,
check the spark plug for excess fuel. Clean and replace
the spark plug as needed.

OPERATION

cools

, turn the engine

ON/OFF

switch to the

OPERATION

1. To start the rammer tamping action, move the throttle
lever (Figure 12) quickly from IDLE (close) to the FULL
OPEN position. DO NOT move the throttle lever slowly
as this may cause damage to the clutch or spring.

Figure 12. 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

speed can result in damage to the clutch springs or foot.

3. After the engine cools, turn the engine ON/OFF switch
to the “OFF” position (Figure 14).

Figure 14. ON/OFF Switch (OFF Position)

4. Close the fuel shut- off valve (Figure 15) by moving the
fuel cock lever to the CLOSED position.

2. The MTR40SF tamping rammer is designed to run
at 3,800 to 4,100 rpm. At optimum rpm the foot hits
at the rate between 590 - 695 impacts per minute.
Increasing throttle speed past factory set rpm does
not increase impacts and may damage unit. The
MTR40SF is designed to advance while tamping. For
faster advance, pull back slightly on the handle so that
rear of foot contacts soil first.

STOPPING THE ENGINE

Move throttle lever quickly from the FULL OPEN to IDLE
position (Figure 13) and run the engine for three minutes
at low speed.

Figure 15. Fuel ShutOff Valve (Closed)

Emergency Showdown

1. Move the throttle lever quickly to the IDLE position, and
turn the engine ON/OFF switch to the OFF position.
Turn the fuel valve lever to the CLOSED position.

Figure 13. Throttle Lever (Idle)

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 17

DAILY

 Thoroughly remove dirt and oil from the engine compartment

and rammer. Clean or replace the air cleaner elements as
necessary. Check and retighten all fasteners as necessary.
Check the bellows for oil leaks. Repair or replace as needed.

200 - 300 HOURS (PRE-CLEANER)

 Remove the element from the pre-cleaner (Figure 16) at the

top of the crankcase (body side) and clean it with cleaning
oil (kerosene).

MAINTENANCE

Figure 17. Engine Air Cleaner

MAIN SPRINGS LUBRICATION

 The rammer main springs (Figure 18) should be

lubricated with five shots of grease with a hand grease
gun after each eight (8) hours of use.

Figure 16. Primary Air Cleaner

 Lubricate the top element (yellow) with 2~5 cc of engine

oil SAE-30.

 Lubricate bottom element (gray) with 7~9 cc of engine

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

AIR CLEANER

 The air cleaner (Figure 17) on the engine side will hardly

be contaminated, if it is, clean the outer foam gray
element with cleaning solvent. Tightly squeeze outer
foam element to remove any excess solvent before
reinstalling.

 Tap the paper filter element (Figure 17) several times on

a hard surface to remove dirt, or blow compressed air
[not exceeding 30 psi (207 kPa, 2.1 kgf/cm2)] through
the filter element from the air cleaner case side. NEVER
brush off dirt. Brushing will force dirt into the fibers.
Replace the paper filter element if it is excessively dirty.

 Use MQ HIGH TEMPERATURE GREASE, P/N GRS2

or its equivalent.

 Equivalent greases include Shell Darina or Texaco

Thermatex, both of which have a bentone base and
EP-2 rating.

 If an inferior grease is used, it may become too thick or

too thin due to changes in temperature, and improper
lubrication could result.

Figure 18. Grease Fittings (Main Springs)

PAGE 18 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)

MAINTENANCE

CRANKCASE LUBRICATION

 The rammer crankcase bearings (Figure 19) should be

lubricated with five shots of grease with a hand grease
gun after each eight (8) hours of use.

Figure 19. Grease Fittings (Crankcase)

 Use MQ HIGH TEMPERATURE GREASE, P/N GRS2

or its equivalent.

FUEL LINES

 Check the fuel and oil lines regularly for damage and

ensure that there are no leaks.

 Replace the fuel lines every two years to maintain the

performance and flexibility of the fuel lines.

SPARK PLUG

 Remove and clean the spark plug (Figure 20), then

adjust the spark gap to 0.024 ~0.028 inch (0.6~0.7
mm). This unit has electronic ignition, which requires
no adjustments.

Figure 20. Spark PLug Gap

LONG TERM STORAGE

 Drain fuel from fuel tank, fuel line and carburetor.

 Remove spark plug and pour a few drops of motor oil into

cylinder. Crank engine 3 to 4 times so that oil reaches
all internal parts

 Clean exterior of rammer with an oil-moistened cloth.

 Store unit covered with plastic sheet in moisture free and

dust free location out of direct sunlight.

CLEANING THE RAMMER

 If using a high pressure spray washer, be careful not

to splash water directly on the air cleaner, carburetor,
muffler, and fuel cap. Excessive amounts of water may
cause severe engine damage.

MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12) — PAGE 19

Table 4. Engine Maintenance Schedule

MAINTENANCE

FIRST

DESCRIPTION (3) OPERATION BEFORE

Engine Oil

Air Cleaner

All Nuts & Bolts

Spark Plug

Cooling Fins CHECK X

Spark Arrester CLEAN X

Fuel Tank CLEAN X

Fuel Filter CHECK X

CHECK X

CHANGE X

CHECK X

CHANGE X (1)

Re-tighten If

Necessary

CHECK-CLEAN X

REPLACE X

X

MONTH
OR
10 HRS.

EVERY
3 MONTHS
OR
25 HRS.

EVERY
6 MONTHS
OR
50 HRS.

EVERY
YEAR
OR
100 HRS.

EVERY

2 YEARS

OR

200 HRS..

Idle Speed CHECK-ADJUST X (2)

Valve Clearance CHECK-ADJUST X (2)

Fuel lines CHECK Every 2 years (replace if necessary) (2)

(1) Service more frequently when used in DUSTY areas.

(2) These items should be serviced by your service dealer, unless you have the proper tools and are mechanically proficient.
Refer to the ROBIN shop Manual for service procedures

(3) For commercial use, log hours of operation to determine proper maintenance intervals.

PAGE 20 — MTX40SF RAMMER • OPERATION AND PARTS MANUAL — REV. #0 (11/28/12)