Echo 75065 Owners Manual v.2 - Manual (Page 15)

Crary Bear Cat Owners manual 13
SERVICE & MAINTENANCE
BEFORE iNSPECtiNg OR SERviCiNg aNy PaRt OF tHiS maCHiNE, SHut OFF POWER SOuRCE,
DiSCONNECt SPaRk PLug WiRE FROm SPaRk PLug aND makE SuRE aLL mOviNg PaRtS HavE COmE tO a COmPLEtE StOP.
Warning
5.2 cuTTing heighT adjusTmenT
the standard cutting height is 2-3/4 inches. Figure 5 below
shows the trimmer head assembled and set at the standard cut-
ting height.
The cutting height can be adjusted down approximately 3/4 inch
by turning the trimmer head disk over. Adjust the cutting height
by following the steps below.
insert a 9/16” open end wrench into the trimmer frame
(Figure 5.1).
Rotate the trimmer head until the wrench engages with the
trimmer shaft.
While holding the wrench, twist the trimmer head weldment
counterclockwise to remove. use a channel lock or pipe
wrench if necessary.
turn trimmer head disk over and replace on trimmer
spindle.
Return trimmer head weldment and turn clockwise to
tighten.
1.
2.
3.
4.
5.
TRIMMER DISC
9/16" WRENCH
TRIMMER HEAD
Figure 5.1 - Cutting Height Adjustment
5.3 cuTTing sTring rePlacemenT
Cutting string is available in two thicknesses, .130 mil (stan-
dard) and .155 mil (heavy duty). the type of string selected is
dependent on the conditions and material being cut.
String heavier than .155 mil can be used by making the holes
in the trimmer head larger. the decision to drill the holes big-
ger may shorten the life of .130 mil and .155 mil string if used
again.
Cutting string can be wrapped in a variety of ways. Refer to
Figures 5.2, 5.3 and 5.4 for examples. the wrapping method
and cutting string thickness chosen is ultimately based on what
is determined the best for the operator.
To wrap the cutting string in the standard configuration, follow
the steps below.
Feed the cutting string through the second hole on either
end of the trimmer head leaving approximately 8 inches
for the cutting surface. total recommended string length
is 20-1/2 inches.
Continue by weaving the cutting string through the first hole
directly beside the second hole used in Step 1. Pull the
cutting string tight.
1.
2.
Loop the cutting string back and feed through the first hole
on the opposite end of the trimmer head.
Feed through the remaining second hole and pull the cut-
ting string tight. the cutting strings in the middle two holes
should be the same length. if the length differs, cut to an
even length.
When completed, the trimmer head should resemble Figure
5.2.
3.
4.
5.5 engine mainTenance
maintenance is essential in preserving engine life. Clean the
engine periodically to remove grass and buildup. the engine
owners manual addresses cleaning the air filter and changing
the oil. Service engine according to the maintenance schedule
in your engine owners manual.
Remember to inspect and clean engine cooling fins as need-
ed.
5.4 drive chain adjusTmenT
models: 73455, 75365
Self-propelled models operate with a drive chain. Periodically,
this chain will need to be adjusted. To adjust:
Loosen the two 5/16” nuts (C) (Figure 4.2) located under
the trimmer axle.
Slide the trimmer axle back to tighten the chains. Slide the
trimmer forward to loosen the chains.
Retighten the nuts.
1.
2.
3.
imPorTanT
Clean grass and buildup from the engine periodically. Dusty
conditions will require frequent cleaning.
Figure 5.2
Wrapping the Cutting String
Figure 5.3
Optional Wrapping Method
Figure 5.4
Optional Wrapping Method