Tomahawk TSCAR-8H Operation And Instruction Manual

WARNING

!

T

o re

duce th

e risk of injury, all ope

r

ators and maintenance personnel must read and understand these

instructions before operating, changing accessories, or performing maintenance on this power
equipment. All possible situations cannot be covered in these instructions. Care must be
exercised by everyone using, maintaining, or working near this equipment.

Operation and Instruction Manual

MODEL: TSCAR-8H

GAS CONCRETE SCARIFIER

(Honda Gasoline Engine)

Contents of TSCAR-8H Manual

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Safety Instructions

Assembly

Product Assembly

Stop Switch

Edger Installation

Edger Removal

Cutter Cage Removal and Cutter

Change Starting Procedures

Stopping the Engine

Maintenance

Bearing Replacement Procedures

Troubleshooting Guide

Specifications

Transportation

Warranty

Maintenance Record

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Safety Instructions

A. Only authorized, experienced or properly trained individuals should operate this equipment.

B. Operating personnel should be equipped with proper safety protection.

C. Rotating and moving parts will cause injury if contacted. Ensure guards and safety devices are in

place before this machine is operated. Make sure engine is shut down and spark plug is

disconnected before servicing your SURFACE PREPAPATION UNIT. Never leave a machine

unattended when it is running.

D. Be careful to avoid contact with the muffler when the engine is hot as it may cause severe burns.

E. When using a DUST CONTROL UNIT avoid hose contact with the TSCAR-8H muffler as the muffler

may burn a hole in the hose.

F. Do not operate the machine in an explosive atmosphere, near combustible materials or where gas

fumes may not be properly dispersed. Repair any fuel leaks. Remove accumulated dust frequently

from air filter system.

G. Do not run the air motor without sufficient oil in the lubricating system. Lubricant levels should be

checked regularly on gas and air powered units. Refer to manufacturer’s manual for amounts.

H. Before starting your unit, always raise the cutter cage assembly using the hand knob adjustment, so

that the cutters do not contact the surface.

Assembly

Your SURFACE PREPARATION UNIT has been shipped partially assembled with the exception of

the handle assembly. The gas powered units require only filling with fuel and a brief check of lubricant

levels in preparation for operation. Engine crankcase is not pre-serviced with oil at factory; levels

should be checked.

Handle Assembly

A. To attach the handle, first remove the pin from the handle assembly. Align the lift plate and re-insert

the top pin. Place flat washer on pin. Insert spring clip through hole in pin. Feed threaded bolt end of

cable through hole on lift plates.

B. Tighten cable by attaching nut.

C. Remove the four bolts and lockwashers from the machine housing. Match up the holes on the handle

assembly and the machine housing and insert the bolts and the washers. Tighten bolts corner to

corner. Before final tightening, place the machine on a flat surface to ensure that all wheels contact

the surface.

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Stop Switch

On gas powered models feed the attached stop wire under the bridge and through the circular hole on

the machine housing, from below the engine, up to attached terminal on the engine. Secure it to terminal

by clamping with a pair of pliers.

Edger Installation

1. Make sure that the power source is disconnected; disconnect spark plug and turn off fuel supply on

gas unit.

2. Tilt machine onto handle (if your unit is equipped with a Honda GX engine, unit must be tilted forward

or cylinders will be flooded with oil).

3. Remove cutter cage and retainer shaft (see cutter cage removal).

4. Facing underside of machine, slide dummy shaft through outboard bearing on left side (if engine is a

Honda GX this will be on the right side of the housing).

5. Slide retainer shaft through edger cage. The roll pin in the shaft head should fit into the slot on the

end plate of the cage.

6. Slide retainer shaft through the outboard bearing and the dummy shaft.

7. Using socket or wrench tighten the retainer shaft by turning counter clockwise.

8. Install edger housing using the three bolts supplied.

9. Note: Edger operation is not to be performed with main TSCAR-8H cage in place.

Edger Removal

1. Make sure the power source is disconnected; disconnect spark plug and turn off fuel supply on gas

unit.

2. Tilt machine onto handle (if your unit is equipped with a Honda GX engine, unit must be tilted forward

or cylinders will be flooded with oil).

3. Using a 15/16” socket or wrench, turn head of shaft clockwise to loosen.

4. While turning the shaft outwards, cage will move towards the outer edge as well. Free cage from

locking pins on shaft by pushing cage back towards main housing. Turn shaft out and remove.

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Cutter Cage Removal and Cutter Change

A. To remove the cutter cage from the machine:

1. Make sure that the power source is disconnected. With gas models turn off fuel supply to engine and

disconnect spark plug.

2. Tilt machine onto the handle. (If your unit is equipped with a Honda GX engine, unit must be tilted

forward to change cutter or cylinders will be flooded with oil. This will prevent starting).

3. Facing the underside of the machine housing place a bar between the cutter rods to jam cage.

4. Insert a drift pin into the hole on the main shaft and pull towards you until loose (if equipped with a

Honda GX engine, drift pin will be pushed away from you to loosen main shaft). Remove drift pin and

turn shaft out by hand. Remove shaft.

Changing Cutters/Shafts

Once the cage has been removed use Allen Key and open end wrench, remove screws from cover plate

and remove from cage. With drift pin, tap rods (or, if changing cutters on edger cage) from the drive side

until free of cage. Replace cutters or shafts as required. Replace cover plate. To re-install cutter cage in

machine, reverse procedure for removal. Ensure that shaft is tight.

Removing cage for Hand Held Models

Remove thumbscrews from cover plate, remove cover. Using chuck wrench insert in slot of matching

spline of drive unit to hold cage assembly. Insert pin wrench in matching holes of cage assembly.

Holding both wrenches at the same time, turn pin wrench counter clockwise until cage is free.

Changing Cutters-Hand-Held Unit

Remove cage shaft plate by removing screws. Using drift pin, tap out rods until free of cage. Replace

cutters or shafts as required. Reposition rods and cover plate and re-install cage in unit by reversing

procedure for removal.

Starting Procedure

Gas Operated

Important: Set the machine in an upright position and adjust the cutter cage to maximum height by

turning the height adjustment knob to its farthest position. (This will ensure clearance for the rotating

cage).

Open the fuel valve on gas tank. Place throttle lever at fast idle position. Set the choke to closed position.

Start engine, open choke to prevent flooding. Move throttle control to open or run position when engine is

warmed up. Increase throttle control to maximum operating position (3600r.p.m.), close choke. Stop

engine after two (2) minutes. Re-start engine.

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