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

100

system/compornent

procedure

before

hours

note

use

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