Before troubleshooting double check the manual:

  • Is your shear properly assembled?
  • Is it being operated correctly?
  • Is it properly lubricated?
  • Has the blade been honed as recommended?

Visually inspect shear, watching for objects that might obstruct the blade or powerhead travel:

  • Foreign material presence between the blade and anvil, in the pin springs, or under the cam.
  • Check your blade for chips, cracks or burrs.
  • Make sure bearings are intact and lubricated. They should not be spinning/moving on the cam during use.
ProblemCheck firstCheck secondCheck thirdCheck Fourth
Difficulty cuttingEnsure cam lock is OFF.
If equipped, engage power lobes (Model 226)
Make sure handle is FULLY extendedCheck blade sharpness / conditionInspect and lubricate bearings / pins
Not cutting completely through materialInspect pins for oblong / wallowed orificeAdjust front stroke stop (magnum shears)Check bearings for wear / playEnsure blade is proper nominal height
Blade sticking after completing cutsCheck /remove & replace blade stops if damagedEnsure blade screws are tightRemove anvil, turn it over, reinstallCheck for marks on anvil (overbite)
Rough or crushed cutsCheck veneer thickness (max= 1/16 ")Check blade condition (chips, burrs, breaks)Ensure blade is honed and sharpReview approved materials list
Cuts aren't squareLoosen fence screws, align fence, tighten Check pins for uneven wearInspect blade and anvil/bladestop for contact
Handle not returning to open positionEnsure pins are lubricatedApply grease to contact area of bearingLubricate axle boltsCheck springs for breakage
Material won't fit into cut areaCheck max thickness of material for your shear.Reverse back stroke stopEnsure blade is proper nominal heightIf you have two bearings, switch which bearing is engaged.
Cam lock pin bent/stuckDo not lift or carry shear by the handleReturn handle slowly to open position - do not "let it fly"Disengage cam lock pin BEFORE cutting
Blade chippingHone as directed in manual (~25 cuts, then daily)Do not cut stranded bambooDo not cut high pressure laminateCheck veneer thickness (max= 1/16 ")
Pin openings wallowed out / oblong where cam axle passes throughDo not lift or carry shear by the handleReturn handle slowly to open position - do not "let it fly"Check veneer thickness (max= 1/16 ")Review approved materials list
Not cutting to edge of materialCheck fence alignment - adjust if neededDo not "angle" material beyond the blade edgeEnsure angle fence(s) are installed with WIDE edge inward (620 model)

Still having problems?