Maintenance, Warning – RedMax SGCZ2450S User Manual
Page 14
US-14
SGCZ2450S
To remove blades:
1. Turn over the machine and remove the
bottom cover (MA3-1) by removing the
4 screws.
2. Loosen 4 screws and remove the lower
blade (MA3- 2)
3. Loosen 4 screws and remove the upper
blade (MA3-3),
To install blades:
The upper and lower blades are
interchangeable. When fastening the
blade mounting screws, torque them
uniformly.
Maintenance, replacement, or repair of the emission control device and
systems may be performed by any non-road engine repair establishment or
individual.
9. Maintenance
• Before cleaning, inspecting, or
repairing the unit, make sure that the
engine has stopped and is cool.
• Use protective gloves whenever
inspecting, removing, sharpening,
and installing the blades.
■ BLADE
Wipe off dust and dirt attached to the
blades, and oil them after every use.
To Sharpen blade:
1. When the cutting edges have become
dull, sharpen them by using a small disk
grinder. (MA1-a)
2. When sharpening, offset the teeth of
upper and lower blades by 3mm. (MA1-
b) To offset, insert the hexagon wrench
into the socket on the top of the
cuttercase and rotate it. (MA2)
• Replace with new blades when the
tooth width became less than 8mm at
the tip. (MA1-c)
• As the extent of wear differs by each
tooth depending on use conditions,
rotate the blade position at intervals.
WARNING
MA1
MA3
MA2
every
every
every
25
50
100
system/compornent
procedure
before
hours
hours
hours
note
use
after
after
after
fuel leaks, fuel spillage
wipe out
✔
fuel tank, air filter, fuel filter
inspect/clean
✔
✔
replace, if necessary
see
■ADJUSTING
replace carburetor
idle adjusting screw
✔
IDLING SPEED (p.12)
if necessary
clean and readjust
GAP: .025in(0.6~0.7mm)
spark plug
✔
plug gap
replace, if necessary
cylinder fins, intake air cooling vent
clean
✔
muffler, spark arrester, cylinder exhaust port
clean
✔
throttle lever, ignition switch
check operation
✔
replace if
cutting parts
✔
something's wrong
debris guard
make sure to attach
✔
gear case
grease
✔
screws/nuts/bolts
tighten/replace
✔
✔
not adjusting screws
ENGINE
SHAFT
■ MAINTENANCE CHART