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14
50-Hour Maintenance
Every 50 hours of operation
(more frequently in dusty or dirty
conditions):
Remove and clean the cylinder cover
and clean grass and dirt from the
cylinder fins.
Remove the cutting attachment, cutting
attachment holder and gear shaft collar.
Remove the filler plug from the side of
the gear case and press new grease into
the gear case until old grease is pushed
out. Use only lithium-base grease such
as Shindaiwa Gear Case Lubricant or
equivalent. See Figure 30.
Lubricate main shaft splines.
Use a hooked wire to extract the fuel
filter from inside the fuel tank.
See Figure 31.
Old
Grease
New
Grease
Gear
Shaft
Collar
Figure 30
Figure 31
251022
Filter Element
Hooked
Wire
CAUTION!
Make sure you do not pierce the fuel
line with the end of the hooked wire.
The line is delicate and can be
damaged easily.
XST021
Every 10 to 15 hours of operation:
Remove and clean the spark plug. Adjust
the spark plug electrode gap to 0.024
0.028 inch (0.6-0.7 mm). If the spark
plug must be replaced, use only an
NGK CMR5H or equivalent resistor type
spark plug of the correct heat range.
See Figure 29.
CAUTION!
Before removing the spark plug, clean
the area around the plug to prevent
dirt and debris from getting into the
engine’s internal parts.
Clean the spark plug
and check the gap at
the electrode.
10/15-Hour Maintenance
0.024–0.028 inch
(0.6–0.7 mm)
Figure 29
NOTE:
The NGK CMR5H also meets the
requirements for electro magnetic
compliance (EMC).
Remove and replace the
filter element.
Before reinstalling the new filter element,
inspect the condition of all the fuel system
components (fuel pick-up line, fuel return
line, tank vent line, tank vent, fuel cap
and fuel tank). If damage, splitting or
deterioration is noted, the unit should
be removed from service until it can be
inspected or repaired by a Shindaiwa-
trained service technician.