terrasaw TS-400, Operator Owner'S Manual

1. 

The special Terrasaw digging tooth and tooth pattern is specifically designed 

to provide maximum digging speed in common soils with minimum friction 

and engine loading.  However when digging in very compacted ground, hard 

clay pans etc. changing to the Terrasaw Alternative Dig Pattern Chain (refer 

pages 14 & 15) may be required. This pattern will assist in trench clearing.

To do this simply slacken and remove the digging chain, and swap for the 

Alternative Dig Pattern Chain (Supplied with new machines). 

2.  

For  digging  in  light  or  sandy  soils  containing  fine  hard  stones,  use  the 

following technique. The Terrasaw digging chain should be at speed before 

contacting the ground surface and when the trench is complete, lift the blade 

clear before throttling off. This reduces the chance of stones jamming the 

nose sprocket. In these conditions it is also an advantage to run the chain 

with twice the normal amount of slack.

3.  

When  digging  at  full  depth  in  difficult  wet  pliable  clays,  it  is  advisable  to 

take three or four passes to achieve the desired final depth, as this reduces 

operator fatigue and undue strain on the powerhead anti-vibration mounts.

4.  

When cutting curves or radius cutting (e.g. concrete lawn edgings, footings, 

building foundations, etc.) it is advisable to use several shallow cuts rather 

than a single cut at full depth. 

5.  

When digging a trench across a farm road or raceway (e.g. for underground 

water pipes or electric fence cable), it is advisable to first loosen the compacted 

gravel/stones along the desired line. Use a pick or similar tool and remove 

any large rocks before trenching to avoid damaging your Terrasaw digging 

teeth. 

Special Situations

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