Maintenance - RedMax EXTREME EXZ2450S-PH Owner's/Operator's Manual

9. Maintenance

Maintenance, replacement, or repair of the emission control device and systems may be performed by any
non-road engine repair establishment or individual.
■ MAINTENANCE CHART
system/compornent
fuel leaks, fuel spillage
fuel tank, air filter, fuel filter
idle adjusting screw
spark plug
cylinder fins, intake air cooling vent
muffler, spark arrester, cylinder exhaust port clean
throttle lever, ignition switch
cutting parts
debris guard
gear case
screws/nuts/bolts
oiling port
guide bar
sprocket
saw chain
sweeper unit
• Make sure that the engine has
stopped and is cool before
performing any service to the
machine. Contact with moving
cutting head or hot muffler may
result in a personal injury.
■ AIR FILTER
MA1
• The air filter, if clogged, will reduce the
engine performance. Check and clean
the filter element. If the element is
broken or clogged, replace with a new
one. (MA1)
(1)
(1) air filter
■ FUEL FILTER
MA2
• When the engine runs short of fuel
supply, check the fuel cap and the fuel
filter for blockage. (MA2)
(1) fuel filter
(1)
procedure before hours
wipe out
inspect/clean
see ■ADJUSTING
IDLING SPEED (p.16)
clean and readjust
plug gap
clean
check operation
replace if
something's wrong
make sure to attach
grease
tighten/replace
clean
clean
inspect/replace
inspect/sharp
replace if
something's wrong
WARNING
every every every
25 50 100
hours hours note
use after after after
✔
✔ ✔
replace, if necessary
replace carburetor
✔
if necessary
GAP: .025in(0.6~0.7mm)
✔
replace, if necessary
✔
✔
✔
BC-EX2, LRT-EX,
✔
HE-EX2
✔
BC-EX2, HE-EX2
✔
✔ ✔
not adjusting screws
✔
PS-EX only
✔
PS-EX only
✔
PS-EX only
✔
PS-EX only
✔
RMS-EX only
MA3
.025 in
0.655mm
EXZ2450S-PH
■ SPARK PLUG
• Starting failure and mis-firing are often
caused by a fouled spark plug. Clean
the spark plug and check that the plug
gap is in the correct range. For a
replacement plug, use the correct type
specified by RedMax. (MA3)
• REPLACEMENT PLUG IS A NGK
CMR7H.
IMPORTANT
• Note that using any spark plug other
than those designated may result in the
engine failing to operate properly or in
the engine becoming overheated and
damaged.
• To install the spark plug, first turn the
plug until it is finger tight, then tighten it
a quarter turn more with a socket
wrench.
TIGHTENING TORQUE:
87~104 in-lbs
(9.8~11.8 N.m.)
U
S
US-23