Spark plug (Fig. 32)
The spark plug condition is infl 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 diffi culties. If the engine is low on power,
diffi 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)
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.
Flexible drive shaft (Fig. 33)
Flexible drive shaft should be removed and
lubricated with good quality lithium grease every
20 hours. To remove the fl exible shaft, fi rst remove
screw (25), loosen bolt (26) and remove the gear
case then pull the shaft out of the drive shaft pipe.
Clean the shaft off and apply a generous coat of
lithium grease to it and insert if back into the drive
shaft pipe, turn it unit it drops into place then install
the gear case, install & tighten screw (25) and screw
(26).
Fig. 32
25
Angle transmission (Fig. 34)
Check angle transmission or angle gear for
grease level about every 50 hours of operation by
removing the grease fi ller plug on the side of angle
transmission.
If no grease can be seen on the fl anks of the gears,
fi ll the transmission with quality lithium based
multipurpose grease up to 3/4. Do not completely fi ll
the transmission.
Semi-auto cutting head
Nylon line replacement
(1) Remove the case (27) by fi rmly pushing inward
the locking tabs with your thumbs as shown in
Fig. 35.
(2) After removing the case, take out the reel and
discard the remaining line.
(3) Fold the new nylon line unevenly in half as shown
in picture.
Hook the U-shaped end of the nylon line into the
groove (28) on the center partition of the reel.
English
26
Fig. 33
Fig. 34
27
Fig. 35
17