19
MAINTENANCE
NOTE:
The saw chain is properly tensioned if,
in the middle of the guide bar, it can be lifted
3mm to 4mm from the edge of the guide bar.
NOTE:
If the chain is too tight, it will not
rotate. Loosen the bar nuts slightly and
turn the chain tensioner screw 1/4 turn
counterclockwise. Lift the tip of the guide bar
up and retighten the bar nuts. Ensure that the
chain will rotate without binding.
ADJUSTING THE CHAIN TENSION
• Rotate the chain cover bar nuts clockwise
to secure. Re-tension the chain whenever
the flats on the drive links hang out of the
bar groove.
WARNING:
Never touch or adjust the chain while the
motor is running. The saw chain is very
sharp. Always wear protective gloves when
performing maintenance on the chain.
NOTE
: During normal saw operation, the
temperature of the chain increases. The drive
links of a correctly tensioned warm chain will
hang approximately 1/16 in. (1.3 mm) out of
the bar groove.
NOTE:
New chains tend to stretch; check
the chain tension frequently as required.
CAUTION:
A chain tensioned while warm may
be too tight upon cooling. Check the “cold
tension” before next use.
CHAIN MAINTENANCE
Use only a low-kickback chain on this saw.
This fast-cutting chain provides kickback
reduction when properly maintained. For
smooth and fast cutting, maintain the chain
properly. The chain requires sharpening
when the wood chips are small and powdery,
the chain must be forced through the wood
during cutting, or the chain cuts to one side.
During maintenance of the chain, consider the
following:
• Improper filing angle of the side plate can
increase the risk of severe kickback
• Raker (depth gauge) clearance.
• Too low increases the potential for
kickback.
• Not low enough decreases cutting ability.
• If the cutter teeth hit hard objects such as
nails or stones, or are abraded by mud
or sand on the wood, have an authorized
service center sharpen the chain.
NOTE:
• Inspect the drive sprocket for wear or
damage when replacing the chain. If signs
of wear or damage are present in the
areas indicated, have the drive sprocket
replaced by an authorized service center.
• If you do not fully understand the correct
procedure for sharpening the chain
after reading the instructions that follow,
have the saw chain sharpened by an
authorized service center or replace with a
recommended low-kickback chain.
SHARPENING THE CUTTERS
• Be careful to file all cutters to the specified
angles and to the same length, as fast
cutting can be obtained only when all
cutters are uniform.
• Tension the chain prior to sharpening.
Refer to Adjusting The Chain Tension.
• Use a 5/32 in. (4 mm) diameter round
file and holder. Do all of your filing at the
midpoint of the bar.
• Keep the file level with a top plate of the
tooth. Do not let the file dip or rock.
• Using light but firm pressure. Stroke
towards the front corner of the tooth.
• Lift the file away from the steel on each
return stroke.
• Put a few firm strokes on every tooth. File
all left hand cutters in one direction. Then
move to the other side and file the right
hand cutters in the opposite direction.
• Remove filings from the file with a wire
brush.
1/32 in. (0.6 mm)
Raker (Depth Gauge) Clearance
Flats on drive links
Summary of Contents for 967044101
Page 22: ...22 EXPLODED VIEW ...
Page 46: ...23 VISTA DESARROLLADA ...
Page 72: ...25 VUE ÉCLATÉE ...
