Tomahawk TR68H User manual

TR68H
VIBRATORY RAMMER Operations Manual
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Table of Contents
1. Safety Information
1.1 Laws Pertaining to Spark Arresters
1.2 Operating Safety
1.3 Operator Safety while using Gasoline Engines
1.4 Service Safety
4
5
5
6
6
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2. Technical Data
2.1 Machine Data
2.2 Engine Data
7
7
8
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5. Maintenance
5.1 Periodic Maintenance Schedule
5.2 Transportation
5.3 Spark Plug
5.4 Air Filter
5.5 Storage
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4. Operation
4.1 Application
4.2 Structure
4.3 Before Starting
4.4 To Start
4.5 Operation
4.6 To Stop
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15
15
16
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3. Labeling
3.1 Labeling Locations
9
9
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3.2 Safety Labels 10
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3.3 Operating Labels 12
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6. Troubleshooting
6.1 Rammer Troubleshooting
6.2 Engine Troubleshooting
20
20
21
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7. Equipment Size 23----------------------------------------------------------------------------------
8. Warranty 24------------------------------------------------------------------------------------------------
9. Maintenance Record 25--------------------------------------------------------------------------
10. Compaction Tips 26-------------------------------------------------------------------------------
11. Parts Manual 29-------------------------------------------------------------------------------------
12. Accessories, Coupons, & More 36----------------------------------------------------

This manual provides information and procedures to safely operate and maintain this
model. For your own safety and protection from injury, carefully read, understand and
observe the safety instructions described in this manual.
Keep this manual or a copy of it with the machine. If you lose this manual or need an addi-
tional copy, please contact Tomahawk Power LLC or visit www.tomahawk-power.com This
machine is built with user safety in mind; however, it can present hazards if improperly
operated and serviced. Follow operating instructions carefully. If you have questions about
operating or servicing this equipment, please contact Tomahawk Power.
The information contained in this manual is based on machines in production at the time
of publication. Tomahawk Power reserves the right to change any portion of this informa-
tion without notice.
No part of this publication may be reproduced in any form or by any means, electronic or
mechanical, including photocopying, without express written permission from Tomahawk
Power.
Any type of reproduction or distribution not authorized by Tomahawk Power represents an
infringement of valid copyrights and will be prosecuted. We expressly reserve the right to
make technical modifications, even without due notice, which aim at improving our ma-
chines or their safety standards.
1. Safety Information
This manual contains DANGER, WARNING, CAUTION, and NOTE callouts which must be
followed to reduce the possibility of personal injury, damage to the equipment, or improp-
er service.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
DANGER indicates an imminently hazardous situation which, if not avoided, will
result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may
result in minor or moderate injury.
DANGER
WARNING
CAUTION
4

5
CAUTION: Used without the safety alert symbol, CAUTION indicates a potentially hazard-
ous situation which, if not avoided, may result in property damage.
1.1 Laws Pertaining to Spark Arresters
Notice: State Health Safety Codes and Public Resources Codes specify that in certain loca-
tions spark arresters be used on internal combustion engines that use hydrocarbon fuels. A
spark arrester is a device designed to prevent accidental discharge of sparks or flames from
the engine exhaust. Spark arresters are qualified and rated by the United States Forest
Service for this purpose.
In order to comply with local laws regarding spark arresters, consult the engine distributor
or the local Health and Safety Administrator.
1.2 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 contained in both this manual and the engine manual and famil-
iarize yourself with the location and proper use of all controls. Inexperienced operators
should receive instruction from someone familiar with the equipment before being allowed
to operate the machine.
1.2.1 NEVER allow anyone to operate this equipment without proper training. People
operating this equipment must be familiar with the risks and hazards associated with it.
1.2.2 NEVER touch the engine or muffler while the engine is on or immediately aer it has
been turned off. These areas get hot and may cause burns.
1.2.3 NEVER use accessories or attachments for the rammer, which are not recommended
by TOMAHAWK POWER. Damage to the rammer and/or injury to user may occur.
1.2.4 NEVER leave machine running unattended.
1.2.5 ALWAYS be sure operator is familiar with proper safety precautions and operation
techniques before using machine.
1.2.6 ALWAYS wear hearing protection when operating equipment.
1.2.7 ALWAYS wear protective clothing appropriate to the job site when operating equip-
ment.
1.2.8 ALWAYS wear hearing protection when operating equipment.
1.2.9 ALWAYS close fuel valve on engines equipped with one when machine is not being
operated.
WARNING

6
1.2.10 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.
1.2.11 ALWAYS operate machine with all safety devices and guards in place and in working
order. DO NOT modify or remove safety devices. DO NOT operate machine if any safety
devices or guards are missing or inoperative.
1.2.12 ALWAYS read, understand, and follow procedures in Operator's Manual before
attempting to operate equipment.
1.3 Operator Safety while using Gasoline Engines
Internal combustion engines present special hazards during operation and fueling!
Read and follow warning instructions in engine owner's manual and safety guidelines
below. Failure to follow warnings and DANGER safety guidelines could result in severe
injury or death.
1.3.1 DO NOT run machine indoors or in an enclosed area such as a deep trench unless
adequate ventilation, through such items as exhaust fans or hoses 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.
1.3.2 DO NOT smoke while operating machine.
1.3.3 DO NOT smoke when refueling engine.
1.3.4 DO NOT refuel hot or running engine.
1.3.5 DO NOT refuel engine near open flame.
1.3.6 DO NOT spill fuel when refueling engine.
1.3.7 DO NOT run engine near open flames.
1.3.8 ALWAYS refill fuel tank in well-ventilated area.
1.3.9 ALWAYS replace fuel tank cap aer refueling.
1.3.10 ALWAYS check fuel lines and fuel tank for leaks and cracks before starting engine.
1.3.11 DO NOT run machine if fuel leaks are present or fuel lines are loose.
1.4 Service Safety
Poorly maintained equipment can become a safety hazard! In order for the equip
ment to operate safely and properly over a long period of time, periodic maintenance
and occasional repairs are necessary.
1.4.1 DO NOT attempt to clean or service machine while it is running. Rotating parts can
cause severe injury.
1.4.2 DO NOT crank a flooded engine with the spark plug removed on gasoline-powered
engines. Fuel trapped in the cylinder will squirt out the spark plug opening.
DANGER
WARNING

7
1.4.3 DO NOT test for spark on gasoline-powered engines, if engine is flooded or the smell
of gasoline is present. A stray spark could ignite fumes.
1.4.4 DO NOT use gasoline or other types of fuels or flammable solvents to clean parts,
especially in enclosed areas. Fumes from fuels and solvents can become explosive.
1.4.5 ALWAYS keep area around muffler free of debris such as leaves, paper, cartons, etc. A
hot muffler could ignite them, starting a fire.
1.4.6 ALWAYS replace worn or damaged components with spare parts designed and
recommended by Tomahawk Power.
1.4.7 ALWAYS disconnect spark plug on machines equipped with gasoline engines, before
servicing, to avoid accidental start-up.
1.4.8 ALWAYS keep machine clean and labels legible. Replace all missing and hard-to-read
labels. Labels provide important operating instructions and warn of dangers and hazards.
2. Technical Data
2.1 Machine Data
Model
Engine
Engine Speed (RPM)
Power (HP)
Weight (lbs)
Compaction Force
Jumping Stroke (in)
Fuel Tank Capacity (L)
Shoe Size (in)
Ramming System Lubrication
TR68H
Honda GXR120
4100±100
3.6
176
3,550 lbs/²
1.6 - 3.4
2.7 US qt
13 x 11
0.8 L, CD10W-30

8
Engine Type
Bore x Stroke
Displacement
Net Power Output*
Net Torque
PTO Sha Rotation
Compression Ratio
Carburetor
Starting System
Oil Capacity
Air-cooled 4-stroke OHC
60 X 43 mm
121 cm3
3.6 HP (2.7 kW) @ 3,600 rpm
5.5 lb- (7.5 Nm) @ 2,500 rpm
Counterclockwise
8.5:1
Float Type
Recoil
0.29 US qt. (0.28 L)
2.2 Egnine Data

9
3. Labeling
3.1 Label Locations

10
3.2 Safety Labels
Tomahawk & Jumping JX machines use international pictorial labels where needed.
These labels are described below:
This label contains important safety and operating
information. If it becomes illegible, the cover must
be replaced. Refer to the Parts Manual for ordering
information.
CAUTION!
For optimal control, performance, and minimal
hand/arm vibration, grasp handle as shown.
DANGER! Engines emit carbon monoxide; operate
only in well-ventilated areas. Read the Operation
Manual for machine information. No sparks,
ames, or burning objects should be near the
machine. Shut o the engine before refueling. Use
only clean, ltered unleaded gasoline.
CAUTION!
Use only clean, ltered gasoline fuel.
CAUTION !
Ling point.
WARNING!
Hot surface!

11
WARNING!
Serious injury if struck by compressed spring or
cover. If the spring system cover is removed
improperly, the springs can eject.
Guaranteed sound power level in dB(A).
A nameplate listing the model number and serial
number is attached to each unit. Please record the
information found on this plate so it will be
available if the nameplate lost or damaged.

START THE ENGINE
1. Turn the engine switch to the ON position
2. Close the choke
3. Pull the recoil starter
4. Open the choke.
Stop the engine:
Turn the engine switch to OFF position.
FUEL VALVE
Closed
Open
Engine stop button:
Press to stop engine.
Choke:
O: Open
I: Closed
NOTICE!
Throttle control lever:
Turtle = Idle or Slow Rabbit = Full or Fast
12
3.3 Operating Labels
Tomahawk & Jumping JX machines use international pictorial labels where needed.
These labels are described below:

13

14
4. Operation
4.1 Application
Rammers are designed to compact loose soils and gravel to prevent settling and to pro-
vide 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.
4.2 Structure
Thetop end is made up of the engine, Clutch, Connecting Rod, Operating Handle, and Fuel
Tank that connects via Shock Absorbing Rubber to the body. The bottom end is made up of
Spring Cylinder (Sliding part), Foot Plate that ramps body, Foot and Bellows.
4.3 Before Starting
- 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 visi-
ble at the window. For lubrication, use automobile engine oil of SAE 10W-30.
- 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. These may have become loosened
due to vibrations from previous use.
- Remove dirt and dust. Particularly clean the vicinity of recoil starter and foot.
Please do not use in the following cases as it may cause damage because
machine is unbalanced.
- Pile foundation
- Hard soil excessively compacted over normal condition
- Steep bank and slopes
WARNING

15
4.4 To Start
1. Add 91 Octane Gasoline and SAE10W30 Oil to the engine.
2. Set the engine ON/OFF switch to the “ON” position.
3. On the top of the rammer, turn the fuel switch to the “ON” position.
4. 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.
5. If the engine has started, warm-up the engine for a period 3 to 5 minutes at low speed,
while paying careful attention.
NOTE: 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. With the ignition plug removed, pull
the recoil starter handle 2-3 times to discharge excessive gas.
4.5 Operation
1. Turn the choke lever to open the choke. Run the engine for 5 minutes at low speed to
warm the engine.
2. Move the throttle lever quickly to the “FULL OPEN” position. DO NOT move the throttle
lever slowly as this may cause damage to the clutch or spring.
3. Aer starting the tamping action, adjust the jumping motion to suit the 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 efficiency. Increas-
ing 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 may become viscous, causing the tamping
rammer to perform somewhat irregular movement. It is recommended to perform a
warm-up run while moving the throttle lever repeatedly between ON and OFF positions,
before beginning to work.
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.
WARNING

16
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.
4.6 To Stop
4.6.1 Normal Shutdown
1. With the throttle lever closed from ON to OFF, run the engine for 3-5 minutes at low
speed, and aer the temperature is lowered, turn the switch to the position.
2. Close the fuel shut-off valve by moving the fuel cock lever to the CLOSED position.
4.6.2 Emergency Shutdown
Move the throttle lever quickly to the IDLE position, and turn the engine’s ON/OFF Switch to
the OFF position.

17
Check fuel level.
Change engine oil.
Clean recoil starter
Every 2
weeks or
25 hours
Every
month or
100 hours
Every
year or
300 hours
5. Maintenance
5.1 Periodic Maintenance Schedule
The chart below lists basic engine maintenance. Refer to engine manufacturer's Operation
Manual for additional information on engine maintenance.
* Change ramming system oil aer first 50 hours of operation.
* Change ramming system oil aer first 50 hours of operation.
Note: If engine performance is poor, check, clean, and replace air filter elements as needed.
Daily
before
starting
Check engine oil level
Inspect fuel lines & fittings
Clean engine’s cooling fins
Clean and check spark plug
Replace Spark Plug
Change ramming system oil
Clean muffler & exhaust
Tighten rammer’s shoe
Check & tighten engine’s
cylinder screws
Aer
first 5
hours
Tighten external hardware

1718
5.2 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 distances or poor roads.
4. Secure machine firmly to prevent it from moving or tipping.
5. The rammer should be transported in the same position as if it is placed on level ground.
In case the rammer must be laid down for transportation, drain the fuel tank as wellas the
carburetor and make sure that the oil plug is tightened securely, then tie the rammer to the
vehicle at points (a) and (b).
6. The rammer must be laid down so that the air filter faces up. Aer laying the rammer
down, make sure that there is no leak from the fuel from cap (c).
7. Make sure liing device has enough capacity to hold machine (see identification plate on
machine for weight). Use central liing point (a) when liing machine.
8. Use trolley kit (not included) for short distance transportation.
Visit www.tomahawk-power.com for wheel kit accessories and more.
5.3 Spark Plug
Check and clean spark plugs regularly. A fouled, dirty spark plug may cause hard starting
and poor engine performance. Set spark plug gap to recommended clearance. Refer to
engine manual.
NOTICE: A loose spark plug can become very hot and may cause engine damage.
The muffler and engine cylinder become very hot during operation and remain
hot for a while aer stopping the engine. Allow engine to cool before removing
spark plug.
WARNING

19
5.4 Air Filter
A clean engine will extend engine life. Keep the air filter clean at all times. Clean the ram-
mer’s air filter using the recommended solvent daily. See engine manual for proper clean-
ing procedure. Let the filter dry before reinstalling.
5.5 Storage
The rammer should be stored on level ground, aer the engine and machine have cooled
down. Be sure to secure the rammer as necessary to avoid it from falling down. Ihe
rammer has to be laid down, tighten fuel tank cap and engine oil plug securely andwait
until the engine and machine are cooled down. Aer laying it down, make sure that there is
no fuel or oil leak (if fuel leaks, drain the tank).
5.5.1 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.
NEVER use gasoline or other types of low flash point solvents for cleaning the
air cleaner. A fire or explosion could result.
WARNING

1720
6. Troubleshooting
6.1 Rammer Troubleshooting
SYMPTOM POSSIBLE CAUSE SOLUTION
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
Improper engine speed Adjust engine speed to correct
operating RPM setting
Engine rotates but amplitude not
uniform or does not strike