Shindaiwa EB2510/EVC User Manual

Page of 56
14
Is the engine overheating?
Engine is rough at all 
speeds. May also have 
black smoke and/or 
unburned fuel at the 
exhaust.
Operator is overworking the unit.
Carburetor mixture is too lean.
Improper fuel ratio.
Fallen leaves or debris on intake cover.
Fan, fan cover, cylinder fins dirty
or damaged.
Carbon deposits on the piston or
in the muffler.
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.
Overheating condition.
Improper fuel.
Carbon deposits in the
combustion chamber.
Use a lower throttle setting.
Consult with an authorized
servicing dealer.
Refill with clean, fresh unleaded gasoline 
with a pump octane of 87 or higher, mixed 
with a premium 2-cycle air cooled mixing oil 
or equivalent at a 50:1 gasoline ratio.
Clean the intake cover.
Clean, repair or replace as necessary.
Consult with an authorized
servicing dealer.
Service the air cleaner element.
Tighten or replace the spark plug.
See page 11.
Repair or replace fuel filter and/or
fuel line.
Replace the fuel. See page 7.
Consult with an authorized
servicing dealer.
See above.
Check fuel octane rating; check for
presence of alcohol in the fuel. See 
page 7. Refuel as necessary.
Consult with an authorized
servicing dealer.
What To Check
Possible Cause
Remedy
LOW POWER OUTPUT
Engine is knocking.
Troubleshooting Guide (continued)