RedMax EXZ2450S-PH manual Maintenance Chart, MA1 AIR Filter MA3, Spark Plug, Fuel Filter

EXZ2450S-PH

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

				every	every	every		U
				25	50	100
								S
	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
ENGINE	spark plug	clean and readjust			✔		GAP: .025in(0.6~0.7mm)
	idle adjusting screw	see ■ADJUSTING	✔				replace carburetor
		IDLING SPEED (p.16)					if necessary
		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	✔
SHAFT	cutting parts	replace if	✔				BC-EX2, LRT-EX,
		something's wrong					HE-EX2
	debris guard	make sure to attach	✔				BC-EX2, HE-EX2
	gear case	grease		✔
	screws/nuts/bolts	tighten/replace	✔			✔	not adjusting screws
UNIT	oiling port	clean	✔				PS-EX only
	guide bar	clean	✔				PS-EX only
CUTTING	sprocket	inspect/replace			✔		PS-EX only
	sweeper unit	something's wrong	✔				RMS-EX only
	saw chain	inspect/sharp	✔				PS-EX only
		replace if

WARNING

•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.

MA1 ■ AIR FILTER

MA3

.025 in

0.655mm

■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.

•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

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

MA2

(1)

■FUEL FILTER

•When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage. (MA2)

(1) fuel filter

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.)

US-23