Shindaiwa EB8520RT Operator's Manual page 28

Maintenance and care
Diagnosis
Is the engine overheating?
Engine is rough at all speeds. May also
have black smoke and/or unburned fuel
at the exhaust.
Engine is knocking.
Engine speed is reduced.
Low power output
Cause
Operator is overworking the
unit.
Carburetor mixture is too lean.
Improper fuel ratio.
Fallen leaves or debris on in-
take cover.
Fan, fan cover, cylinder fins
dirty or damaged.
Carbon deposits on the piston
or in the silencer.
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 dia-
phragm.
Overheating condition.
Improper fuel.
Carbon deposits in the com-
bustion chamber.
Heat sensor is activated, due
to restricted air flow at intake
cover.
26
Solution
Use a lower throttle setting.
Consult your shindaiwa dealer.
Refill with fresh, clean unleaded
gasoline with a pump octane of 89
or higher mixed with a 2-cycle air
cooled mixing oil that meets or ex-
ceeds ISO-L-EGD and/or JASO
FC, FD classified oils at 50:1 gaso-
line/oil ratio.
Clean the intake cover.
Clean, repair or replace as neces-
sary.
Consult your shindaiwa dealer.
Service the air cleaner element.
Tighten or replace.
Repair or replace fuel filter and/or
fuel line.
Replace the fuel.
Consult your shindaiwa dealer.
See above.
Check fuel octane rating; check for
presence of alcohol in the fuel. Re-
fuel as necessary.
Consult your shindaiwa dealer.
Stop the engine. Clean debris
blocking intake cover. Restart. Idle
more than 1 minute. If engine
speed is reduced again, consult
with an authorized servicing deal-
er.