Sears 358.356100-3.7/18"PS manual Maintain Rounded Corner Depth Gauge, Cooling and Exhaust System

2.GUIDE BAR MAINTENANCE

•Conditions which can require guide bar maintenance:

--sawcuts to one side

--sawhas to be forced through a cut

--inadequate supply of oil to bar and chain.

•Check the condition of the guide bar each

:r time the chain is sharpened. A worn guide bar will damage thechain and make cut- ting more difficult.

•Replace theguide bar when:

....	_the	inside	groove of the guide bar rails is
	worn.
	. ,: --the	guide	ba r is bent or cracked.

a, Remove the guide bar to service.

.... b. Clean oil holes at least once for each

five hours of operation.

......................................................................c:---Remove-sawd ust from-the- guide-bar ......................

groove periodically with a putty knife or a wire. Figure43 '

d.Remove burrs by filing the side edges of the guide bar grooves square with a flat file. Figure44.

e.Restore square edges to an uneven rail top by filing with aflat file. Figure44.

MAINTAIN ROUNDED CORNER

OF DEPTH GAUGE

.030""

t

Figure 42

i

Figure 43

I			t
GUIDE BAR	WORN GROOVES	_FILE EDGES
I CORRECT		SQUARE
GROOVE
	Figure44

SgIGNITION, COOLING AND EXHAUST SYSTEMS

::• Carbon deposits will build up on exhaust ports, spark arrestor, muffler, and spark plug as the sawis used. All of these parts should

•be cleaned at the same .time to prevent engine damage, overheating, loss of power,

": and hard starting. ,

. e Clean parts: _

--asrequired

:'i_at least once for each 25-30 hours of op* •ration

1.COOLING AND EXHAUST SYSTEM

•Carbon build-up on the cooling and ex-

haust system can cause the engine to loose power in a cut.

•Keep the spark arrestor clean at all times.

Items required: --wire brush

3/8" wrench --hardwoodstick

a. Disconnect.the spark plug.

b. Remove .the muffler, baffles, and screen. Figure 45,

c. Pull the starter (ope until the piston moves far .enough to close the exhaust ports..

d. Scrape the carbon deposits from the exhaust ports and surrounding exhaust chamber using a hardwood stick. Figure 46,

[CAUTION:I Do not use a metallic scrap- ing tool to avoid damage to the piston.

•Replace the spark arrestor when breaks in the screen are found.

SPARK ARRESTOR

HEAT SHIELD

\

MUFFLER

Figure 45 Figure 46 19