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13
FOR BEST
RESULTS
USE PIONEER'OURAGUARO'OR'OURASPEEO'SAW
CHAIN
H
~
~
~
~
~
~
~
(0
0)
•
Ci:9)
•
&:::2)
•
!
common problems found lNith
CUTTERS and LINKS
FAILURE
CAUSE
REMEDY
FAILURE
CAUSE
Concave
SIde
Chalo
(un 100
Decrease cham
@
0)
Q
SIde wear
Ab raSive cutting
link and
tight
InsuffiCient
tenSion
Check
cond ition
cutter
bottoms
lubrication
oller,
file
=
Cutters dull
cutters
•
Heel ..
ea~on
Ch~m
,un too
Increase
cha
in
~
Back nicked
Chain ru
n
too
cutters a
loose
Too
mucn
tension
Maintain
loose
side
links.
JOint.
Cutters
baSIC .025" 101n\
dull
File cutters
Shght heel wear
Back
slope on
Remove back
slope
~
Bac~ rounde~
Worn
sprocket
cutters and side
cutters-cham
Decrease cha
in
to bottom
Chain
run too
links.
slightly
tight
tenS
ion
file
toOSt.
Cutters
dull.
cutters
hcessl~e
bottom
Insufficient
10lnl
-
Increase loinllo
Back and
front
Worn
or
wlong
weal
on
cutters
chain
lun
tlghl,
02~"
Decrease
~
of
link
peened
pilch
spr ockel
and side IInh
filing blunl
-
no
tension
-
refer
10
undercut,
culters
filing Insll
dull
File cuUers
Severe side wear
Caused
by
striking
All
~Islble
abraSion
~
Back peened
Worn
sprocket
and
abfasl~e
slone
or
nails, elc
must be removed
Dull
cuttefs
damage
Cutters dull
by filing
(utlers
back
file
cuUers
Crack under leaf
Cutters dull or
Refer
1
0 filing
~
Bottom peened
l ink
TIding on
flVet
hooked
instruct ions
and worn
bottom
of
bar
groo~e
Bar ralls
florn,
Dull cu
tt
ers
Crack under
Insufhclent
10lnt
Increase jomt
to
~
Bottom pomt
lmk
bottoming
In
Iront rivet
baSIC ,025"
ro
lled
up
\\'oln sprocket
Oull
cutters
Cracks under
Chain
run
dull
and
Reier
to
filing
~
Bottom rough
Chain
run
too
both flvets
tight
-
insufficient
Insll, Increase
and broken 011
tight causes
10IOt
lomt to
baSIC
stletch and climbs
025"
up
on sprocket
teeth
Bottom peened
Houked cutle
rs-
Eliminate
hook
~
J
Olive
lugs
worn
E~cesslve
lace
and burred
dull
-
no
undercut
Refer
to
fllmg
00
S ides
angle
of cutters
causes
cham
to
InstructIOns
causes
Side
th
rust
pound on
ra
lls
Front peened
Chain
IUO
too
Increase tenSion
~
~~
DfI~e
lugs
worn
Elcesslve face
slack-crowds
at
00 one Side
angle
01 cutlers
bar
entry
on one Side
Clearance
notch
Sprocket
teeth
Renew
sprocket
~
~~
Chain Jumps ou
t
Uneven filing
peened
worn
of
bar groove
Chain run too
loose
REMEDY
Check for gflt
10
timber being cut
lubricate
well.
Increase tenSion
Increase tenSion
Renew sprocket
Renew
sprockel
Increase lenSlon
Renew sprodel
file cutters
Renew bar
File
cutiers.
Renew splocket
file
cutters
Renew
worn
chain
or
sprocket Run
cham
With
less
tenSion
Reier
to
filing
,nstructlons
Cutters
must
have
eq
ual
lace angles
Increase cha
in
tenSion Reier
to filing
Ins\ructlons
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