MA2, AIR Filter, MA3, Fuel Filter, Spark Plug

BCZ3050S/T/SW

9. Maintenance

MA1-c

Twist and load installation (MA1-c)

1.Align notch on bump knob with either insert arrow.

2.Insert the two ends of a 20 feet piece of trimmer line into each eyelet. Pushing line into the channel of the spool approximately 2 inches.

3.Hold housing of trimmer head and turn bump knob clockwise.

4.Cut remaining trimmer line to separate into two pieces.

(1) Notch

MA2

(1)

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.

■ AIR FILTER

•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. (MA2)

(1) air filter

U S

MA1-d

Manual installation (MA1-d)

1. Take a 20 foot length of .095 Cable

Twist line and cut in half and insert

each end of the line into both line

holding holes located in the center

separation rib. (Note: the line needs to

be pushed into each hole 2.5 inches or

55mm until it stops.)

2. Hold the spool opening toward you and

bump button away from you. Wind the

line in the direction or arrow on the

MA3

(1)

■FUEL FILTER

•When the engine runs short of fuel supply, check the fuel cap and the fuel filter for blockage. (MA3)

(1) fuel filter

spool body, by placing your index finger

between the two strands and wind line

■SPARK PLUG

	tightly and evenly in the clockwise
	direction.
3.	Stop when approximately 15-20cm (6-8
	inches) of line remains and place the
	ends of the line firmly in the notches in
	the top ring of the spool.
4.	Insert the spool over the drive cam
	(white) with notches lining up with
	aluminum line guide eyelets.
5.	Pull each end of the line from the
	holding notches and place the line
	inside of the aluminum line guide

MA4

.038 in

1.00mm

•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. (MA4)

•REPLACEMENT PLUG IS A NGK CMR7H-10.

IMPORTANT

	eyelets.
6.	Align the locking tabs of the cover with
	the locking holes in the head.
7.	Push the cover down and make sure
	the cover tabs snap into the locking
	slots securely.

•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.)

US-15