RedMax CHT2250 manual Maintenance, SPARK ARRESTER MA4

CHT2250

8. Maintenance

■ SPARK ARRESTER (MA4)

• The muffler is equipped with a spark

	arrester to prevent red hot carbon from
MA4	flying out of the exhaust outlet.
	Periodically inspect and clean as
	necessary with a wire brush.

the file from the blade when returning to start a new pass;

• Remove all burr from the edge of the blade with a slip stone;

• Remove as little material as possible;

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• Before refitting the sharpened blades,

In the State of California it is required

by law (Section 4442 of the California

Public Resources Code) to equip a

spark arrester when a gas powered tool

is used in any forest covered, brush

remove filings and then apply grease. Do not try to sharpen a damaged blade: change it or take it to a Service dealer.

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covered, or grass covered unimproved

land.

(1) Spark arrester

■ INTAKE AIR COOLING VENT

WARNING

MA8

■REDUCTION GEARBOX

Refill gear housing every 25 working hours.

Use greese pump. Feed greese until it comes out of the base of blades. (MA8)

	• Never touch the cylinder, muffler, or
	spark plugs with your bare hands
MA5	immediately after stopping the
	engine. The engine can become very
	hot when in operation, and doing so
	could result in severe burns.
	• Clean the cylinder fins with
	compressed air or a brush. (MA5)
	(1) Cylinder
	(2) Intake air cooling vent (back)

■PROCEDURES TO BE PERFORMED AFTER EVERY 100 HOURS OF USE

MA9	1. Remove the muffler, insert a
	screwdriver into the vent, and wipe
	away any carbon buildup. Wipe away
	any carbon buildup on the muffler
	exhaust vent and cylinder exhaust port
	at the same time.

2.	Tighten all screws, bolts, and fittings.
3.	Check to see if any oil or grease has
	worked its way in between the clutch
	lining and drum, and if it has wipe it

MA6

MA7

IMPORTANT

•If waste gets stuck and causes blockage around the intake air cooling vent or between the cylinder fins, it may cause the engine to overheat, and that in turn may cause mechanical failure on the part of the hedge-trimmer.

■BLADES

Oil blades each gas tank filling. (MA6)

WARNING

•Make sure that the blade bolts are well tightened.

•The blade assembly is designed to automatically compensate for any play between the blades.

■Sharpening (MA7)

Always keep the file or sharpener at an angle of 45° to the blade, and:

•Always grind in the direction of the cutting edge;

•Note: files cut only in one direction; lift

away using oil-free, lead-free gasoline.

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