13
English
Spark plug (Fig. 31)
The spark plug condition is in
fl
uenced by:
○
An incorrect carburetor setting
○
Wrong fuel mixture (too much oil in the gasoline)
○
A dirty air
fi
lter
○
Hard running conditions (such as cold weather)
These factors cause deposits on the spark plug
electrodes, which may result in malfunction and starting
di
ffi
culties. If the engine is low on power, di
ffi
cult to start
or runs poorly at idling speed, always check the spark
plug
fi
rst. If the spark plug is dirty, clean it and check the
electrode gap. Re-adjust if necessary. The correct gap is
0.024" (0.6 mm). The spark plug should be replaced after
about 100 operation hours or earlier if the electrodes
are badly eroded.
0.024"(0.6 mm)
Fig. 31
NOTE
In some areas, local law requires using a resistor
spark plug to suppress ignition signals. If this
machine was originally equipped with resistor spark
plug, use same type of spark plug for replacement.
Mu
ffl
er (Fig. 32)
Remove the mu
ffl
er and clean out any excess carbon
from the exhaust port or mu
ffl
er inlet every 100 hours
of operation.
Fig. 32
Cylinder (Engine cooling) (Fig. 33)
The engine is air cooled and air must circulate freely
around engine and over cooling
fi
ns on cylinder head
to prevent overheating.
Every 100 operating hours, or once a year (more often
if conditions require) clean
fi
ns and external surfaces of
engine of dust, dirt and oil deposits which can contribute
to improper cooling.
Fig. 33
NOTE
Do not operate engine with engine shroud or mu
ffl
er
guard removed as this will cause overheating and
engine damage.
Oiler port (Fig. 34)
Clean the chain oiler port (33) whenever possible.
33
Fig. 34
Guide bar (Fig. 35)
Before using the machine, clean the groove and oiler
port (34) in the bar with the special gauge o
ff
ered as an
optional accessory.
34
Fig. 35
000Book̲TCS27EPAP(S)̲Eng.indb 13
000Book̲TCS27EPAP(S)̲Eng.indb 13
2014/06/04 15:30:02
2014/06/04 15:30:02
