Service; Troubleshooting; Engine Specifications - Little Wonder 2230S Manuel D'instructions

SERvICE

Troubleshooting

Problem
1. Blades don't • Blades are dull or not adjusted properly.
cut cleanly.
2. Blades don't move • Engine is not seated properly on the
when throttle gear housing.
is depressed.
• Blades are adjusted too tight.
3. Engine fails to start. • ON/OFF switch is in OFF position.
• No fuel in tank.
• Fuel strainer clogged.
• Fuel line clogged.
• Spark plug shorted or fouled.
• Spark plug is broken
(cracked porcelain or electrodes broken).
• Ignition lead wire shorted, broken or disconnected
from spark plug.
• Ignition inoperative
(no spark from lead wire).
4. Engine hard to start. • Water in gasoline or stale fuel mixture.
• Too much oil in fuel mixture.
• Engine under or over choked.
• Carburetor out of adjustment.
• Gasket leaks
(carburetor or cylinder base gasket).
5. Engine misses. Weak spark at spark plug
6. Engine lacks power. • Air cleaner clogged.
• Carburetor out of adjustment.
• Muffler clogged.
• Clogged exhaust ports.
• Clogged spark arrestor.
• Poor compression.
7. Engine overheats. • Insufficient oil in fuel mixture.
• Air flow obstructed.
8. Engine noisy • Loose flywheel.
or knocking.
• Spark plugs incorrect heat range.
• Worn bearings, piston ring or cylinder walls.
9. Engine stalls • Carburetor adjustment too "lean".
under load.
• Engine overheats.

ENGINE SPECIFICATIONS

Dry Weight 2.5 kg – 5 lbs., 10 ounces
Type of Engine Air Cooled, Two stroke, Single-Cylinder, Gaso-
line Engine
Rotation Counterclockwise, viewed from TOP
Bore 32.2 mm (1.268 in.)
Stroke 26.0 mm (1.04 in. )
Spark Plug NGK BPM7Y, Champion RCJ-7Y or RCJ-8Y
The spark plug gap is 0.65 mm (0.026"). Refer
to Owner's Manual, for service Procedure
12
Cause
Fuel
Fuel Oil Ratio
Gasoline
Displacement
Exhaust System
Carburetor
Ignition System
Remedy
• Have blades sharpened and adjusted.
• Re-install engine following the assembly instructions. (pg. 9)
• Re-adjust blades following service instructions. (pg. 13)
• Move switch to ON.
• Fill tank.
• Replace strainer.
• Clean fuel line.
• Install new spark plug.
• Replace spark plug.
• Replace lead wire or attach to spark plug.
• Contact your nearest authorized dealer.
• Drain entire system and refill with fresh fuel.
• Drain and refill with correct mixture. If flooded by over choking,
proceed according to instructions in operation section. If under
choked, move choke lever to closed position and crank two or three
times. See "Carburetor Adjustment" Replace gaskets. (pg. 14)
• Contact your nearest authorized dealer.
• Remove and clean. See "Carburetor Adjustment". (pg. 14)
• Clean or replace spark plug - set gap to 0.6-0.7 mm
(.024 .028in.).
Contact your nearest authorized dealer.
• Clean air cleaner.
• See "Carburetor Adjustment".
• Clean carbon from muffler.
• Remove muffler, rotate engine until the piston is at top of cylinder.
With a wooden scraper or blunt tool, remove all carbon from exhaust
ports. Be careful not to scratch or damage piston or cylinder walls.
Blow out all loose carbon with compressed air. Install muffler and
gasket.
• Clean.
• Contact your nearest authorized dealer.
• Mix fuel as described in starting instructions.
• Clean flywheel, cylinder fins and screen.
• Tighten flywheel nut.
• Replace with plugs specified for engine.
• Contact your nearest authorized dealer.
• See "Carburetor Adjustment".
• Remove dust and dirt from between cylinder fins.
Premixed two stroke fuel
50:1 ratio with ECHO or Little Wonder oil
Unleaded, 89 octane or higher
21.2 cc (1.294 cu. in.)
Spark arrester muffler
ZAMA diaphragm model C1U type. RPM at idle
2800 +- 250 RPM
There are no adjustments required for the ignition
LITTLE
WONDER
TRImmER