Shindaiwa 68241-94310 Owner's/Operator's Manual page 19

TROUBLESHOOTING GUIDE (continued)
What To Check
Is the engine over-
heating?
Engine is rough
at all speeds. May
also have black
smoke and/or
unburned fuel at
the exhaust.
LOW POWER OUTPUT
Possible Cause
Operator is overworking
the machine.
Improper fuel/oil ratio.
Fallen leaves or dust on
the intake cover.
Fan, fan cover, or cylinder
fins are dirty or damaged.
Carbon deposits in the
muffler.
Carbon deposits in the
combustion chamber
and/or exhaust port.
Missing or damaged
blower tubes.
Clogged air cleaner
element.
Loose or damaged
spark plug.
Air leakage or
clogged fuel line.
Water in the fuel.
Piston seizure.
Faulty carburetor
and/or diaphragm.
Remedy
Use lower throttle setting.
Refill with fresh fuel of the cor-
rect mixture (gasoline and ISO
EGD or JASO FC class 2-cycle
Engine Oil, 50:1 ratio.
Clean the intake cover.
Clean, repair or replace as
necessary.
Decarbonize muffler.(See 135
hr. maint. page 15).
Consult with an authorized
servicing dealer.
Replace missing or damaged
blower tubes.
Clean or replace air cleaner
element.
Tighten or replace.
Repair or replace filter and/
or fuel line.
Drain the fuel system, replace
the fuel.
Consult with an authorized
servicing dealer.
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