Operator's Manual

Figure28
1.H-platechain
SelectingtheProperDiggingTeeth
Themostimportantcomponentofthetrencherarethe
diggingteeth;thetypeofteeththatyouselectandthe
arrangementofteeththatyouusegreatlyaffectsthedigging
efciencyandtoothwear.
•Choosetheteethtype:
–cuppedteeth
–rock/frostbit
–sharkteeth
–cuppedteethandrock/frostbitcombination
–cuppedandsharkteethcombination
•Choosethetootharrangementwidth:
–152mm(6inch)
–203mm(8inch)
TypesofDiggingTeeth
Thetypesofdiggingteethareasfollows:
•Cuppedteeth(Figure29)arethebestforcutting
throughlighttomediumsoil.Thecuppeddesignofthe
toothcutsthroughthesoilandthenmovesitupandout
ofthetrench.
1
G02191 1
Figure29
1.Cuppedteeth
•Rockandfrostteeth(Figure30)orsharkteeth(Figure
31)arebestforcuttinggroundthatisveryhard,rocky,or
frozen;itisalsousedforcuttingthroughasphalt.
G021912
1
Figure30
1.Sharktooth
1
G021972
Figure31
1.Rockandfrosttooth
ArrangementsoftheDiggingTeeth
Thearrangementofdiggingteethinvolvesbothwhereand
howeachtoothisattachedtothediggingchain.Usethe
followingguidelineswhenyouselectthearrangementsof
teeth:
•Installteeththatarethesamewidthandarespaced
equallyaroundthechain.
•Usefewerteethonthechainwhenyouareoperatingthe
trencherinwetclayorgumbo.
•Usemoreteethonthechainwhenyouareoperatingthe
trencherinsandyloamorrockyground.
Note:Youcanusedifferenttypesandcombinationsofteeth
toincreaseproductivityinvariousdiggingconditions.The
rockandfrostteethorthesharkteethpenetratethesoilwell,
andthecuppedteethhelptoremovethesoil.Tryseveral
combinationstodeterminetheonebestsuitedforyoursite.
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