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.
NOTE: This troubleshooting is for all Bullet shears. If you are uncertain if it pertains to your shear, please contact
Marshalltown customer service.
PROBLEM
Ensure cam lock is OFF.
If equipped, engage
Difficulty cutting
power lobes (Model
Not cutting
Inspect pins for oblong/
completely through
material
Blade sticking after
replace blade stops if
completing cuts
Rough or crushed
Check veneer thickness
cuts
Loosen fence screws,
Cuts aren't square
align fence, tighten
Handle not returning
to open position
Material won't fit into
Check max thickness of
cut area
material for your shear
Cam lock pin bent/
Do not lift or carry
stuck
shear by the handle
Hone as directed in
Blade chipping
manual (~25 cuts, then
Pin openings
wallowed out /
Do not lift or carry
oblong where cam
shear by the handle
axle passes through
Not cutting to edge
Check fence alignment
of material
WS2643
104 S. 8th Ave. Marshalltown, IA Phone 800-888-0127 / 641-753-0127 • Fax 800-477-6341 / 641-753-6341 www.MARSHALLTOWN.com
TROUBLESHOOTING
CHECK FIRST
CHECK SECOND
Make sure handle is
226)
Adjust front stroke stop
wallowed orifice
(MAGNUM shears)
Check/remove &
Ensure blade screws are
damaged
Check blade condition
(max= 1/16")
(chips, burrs, breaks)
Check pins for uneven
Ensure pins are
Apply grease to contact
lubricated
Reverse back stroke stop
Return handle slowly to
Do not cut stranded
daily)
Return handle slowly to
open position - do not "let
Do not "angle" material
- adjust if needed
beyond the blade edge
CHECK THIRD
FULLY extended
sharpness/condition
Check bearings for
Remove anvil, turn it
tight
Ensure blade is honed
Inspect blade and anvil/
wear
blade-stop for contact
Lubricate axle bolts
area of bearing
Ensure blade is proper
Disengage cam lock pin
open position -
BEFORE cutting
do not "let it fly"
bamboo
pressure laminate
Check veneer thickness
it fly"
Ensure angle fence(s)
are installed with WIDE
edge inward (620
CHECK FOURTH
Check blade
Inspect and lubricate bearings/
Ensure blade is proper nominal
wear/play
Check for marks on anvil
over, reinstall
Review approved materials list
and sharp
Check springs for breakage
If you have two bearings, switch
nominal height
which bearing is engaged
Do not cut high
Check veneer thickness
Review approved materials list
(max= 1/16")
model)
pins
height
(overbite)
(max=1/16")
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