Shindaiwa M2510 Owner's/Operator's Manual page 13

Troubleshooting Guide (continued)
What To Check
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.
LOW POWER
Possible Cause
Operator is overworking the unit.
Carburetor mixture is too lean.
Improper fuel ratio.
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
Valve clearance set incorrectly.
Overheating condition.
Improper fuel.
Carbon deposits in the combustion
chamber.
Valve clearance set incorrectly.
Remedy
Cut at slower rate.
Consult with an authorized servicing
dealer.
Refill with clean fresh unleaded
gasoline with a pump octane of 87 or
higher, mixed with Premium 2-cycle
mixing oil at a 50:1 gasoline/oil ratio.
Clean, repair or replace as necessary.
Consult with an authorized servicing
dealer
Clean or replace the air filter
Tighten or replace the spark plug.
Restart. Check the "Specifications"
page in this manual for the correct
spark plug for this unit.
Repair or replace fuel filter and/or fuel
line.
Refill with fresh fuel/oil mixture.
Consult with an authorized servicing
dealer.
Consult with an authorized servicing
dealer.
Check fuel octane rating; check for
presence of alcohol in the fuel. Refuel
as necessary.
Consult with an authorized servicing
dealer.
13