Little Wonder Xtra, Operator Owner'S Manual

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C
HECK THE
S
PARK
P
LUG
If engine is low on power, difficult to start
or runs poorly at idling speed, check the spark
plug.
• Allow engine to cool down.
• Remove spark plug.
• Clean dirty spark plug.
• Check electrode gap - it should be 0.02”
(0.5 mm) (Fig. 20).
• Rectify faults which have caused fouling of
spark plug. Possible faults include:
- Incorrect carburetor setting.
- Too much oil or wrong type of oil in
fuel mix.
- Old fuel mix.
- Dirty air filter.
- Unfavorable running conditions (e.g.
operating at part load).
Do not clean the spark plug in an abrasive
grit spark plug cleaner, as expensive dam-
age to the engine could occur through loose
grit damaging chrome in cylinder bore.
Fit a new spark plug after approximately 100
operating hours or earlier if electrodes are
badly eroded
(recommended type: NGK
BPMR7A or Champion RCJ-6Y).
NOTE: Using spark plugs other than those
designated may result in the engine failing to
operate properly or in the engine becoming
overheated and damaged.
C
HECKING
E
XHAUST
M
UFFLER
Tighten exhaust screws. If exhaust gasket is
leaking, replace gasket. If the engine is low
on power, check the muffler. Allow motor to
cool down. Remove and scrape out excess
carbon (Fig. 21) on both inlet and exit exhaust
or have this done by a service dealer. Replace
exhaust spark arrestor if worn, broken or
blocked (Fig. 22).
15
0.5mm
0.02”
Resistor Spark
Plug
FIG 20
FIG 22
FIG 21
If debris causes blockage around the
intake air cooling vent or between the
cylinder fins, it may cause the engine to
overheat, and that in turn may cause
mechanical failure on the part of the Xtra
Edger. Remove air deflector to clean.