9 of 12
104 S. 8th Ave. Marshalltown, IA Phone 800-888-0127 / 641-753-0127 • Fax 800-477-6341 / 641-753-6341 www.MARSHALLTOWN.com
WS2643
PROBLEM
CHECK FIRST
CHECK SECOND
CHECK THIRD
CHECK FOURTH
Difficulty cutting
Ensure cam lock is OFF.
If equipped, engage
power lobes (Model
226)
Make sure handle is
FULLY extended
Check blade
sharpness/condition
Inspect and lubricate bearings/
pins
Not cutting
completely through
material
Inspect pins for oblong/
wallowed orifice
Adjust front stroke stop
(MAGNUM shears)
Check bearings for
wear/play
Ensure blade is proper nominal
height
Blade sticking after
completing cuts
Check/remove &
replace blade stops if
damaged
Ensure blade screws are
tight
Remove anvil, turn it
over, reinstall
Check for marks on anvil
(overbite)
Rough or crushed
cuts
Check veneer thickness
(max= 1/16")
Check blade condition
(chips, burrs, breaks)
Ensure blade is honed
and sharp
Review approved materials list
Cuts aren't square
Loosen fence screws,
align fence, tighten
Check pins for uneven
wear
Inspect blade and anvil/
blade-stop for contact
Handle not returning
to open position
Ensure pins are
lubricated
Apply grease to contact
area of bearing
Lubricate axle bolts
Check springs for breakage
Material won't fit into
cut area
Check max thickness of
material for your shear
Reverse back stroke stop
Ensure blade is proper
nominal height
If you have two bearings, switch
which bearing is engaged
Cam lock pin bent/
stuck
Do not lift or carry
shear by the handle
Return handle slowly to
open position -
do not "let it fly"
Disengage cam lock pin
BEFORE cutting
Blade chipping
Hone as directed in
manual (~25 cuts, then
daily)
Do not cut stranded
bamboo
Do not cut high
pressure laminate
Check veneer thickness
(max=1/16")
Pin openings
wallowed out /
oblong where cam
axle passes through
Do not lift or carry
shear by the handle
Return 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 material
Check fence alignment
- adjust if needed
Do not "angle" material
beyond the blade edge
Ensure angle fence(s)
are installed with WIDE
edge inward (620
model)
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.
TROUBLESHOOTING
