(3) Excessive play of
the
feed cam roller
Eliminate excessiveplay from the feed cam roller by using a suitable roller.
The roller'souter diameter is 11mm(7/16") for
models
LK-980,982,983 and984:
B2502-280-B0A
Feed
cam
roUer
011
+o
005
B2502-280-B0B
Feed
cam
roller
011
+0-005
B2502-280-B0C
Feed
cam
roller
011
_q
qq^
The roller's outer diameter is9.5 mm(3/8") for
models
LK-985
to
LK-992
:
B2502-280-00A
Feed
cam
roUer
09.5
+o
005
B2502-280-00B
Feed
cam
roller
09.5
+0.005
B2502-280-00C
Feed
cam
roller
09.5
_o
005
(4) Excessive play In
the
shuttle
driver
shaft
Use
a
suitable
shuttle
driver
shaft
with
crank
:
B1806-980-0AA
Shuttle
driver
shaft
with
crank
Standard
B1806-980-0AB Shuttle driver shaft
with
crank 0.1 mm larger in diameter
(5)
Cork
linings In
the
clutch
components
There are 3 cork linings in the clutch unit. The brake cork ring and the low speed cork ring are designed to self-
align as they wear. However, the driving clutch (B1235-980-000) must be adjusted when its cork lining has worn,
or it may slip and cause loss of speed. In this case, adjust the driving pulley pressing plate as per the standard
adjustment instructions (6).
Readjust or replace the clutch components with cork linings in the following cases (See "2. Main Shaft Com
ponents"
in the Parts Book);
1) Brake cork ring (B1234-980-000)
If the brake cork ring slips while operating at low speed make sure that it is not caused by oil leakinginto the
mechanism and then replace the stop ring (intermediate) (B1230-980-000) with a thinner one as mentioned
below;
B1230-980-00A 0.8 mm thick Stop ring (intermediate)
If, evenafter
having
replaced the stop ring,slipping continues to occur, replacethe brake cork ringitself.
(Note)
When
replacing the stop ring, do not apply too much
grease.
To replacethe brake cork ring,
disassemble
the brake components, take out the outer ring of the ball bearingon the brake and insert a new brake
cork ring by tapping gently. Take care to insert it correctly.
2) Drivingclutch (B1235-980-000)
If the driving clutch slips while operating at high speed even after the driving pulley pressing plate has been
adjusted accordingto the standard adjustment, replacethe mainshaft thrust washer(C)with a thicker washeras
mentioned
below;
B1221-771-00E
1.6mm(1/16") thick
Main
shaft thrust
washer
3) Low speed cork ring(B1247-980-000)
Replace
the lowspeedcork ringwith a newone assoon as clearance (A)shownin the Structural
Drawing
of the
Clutch
Components
(p.26)
has
decreased
to
2.2.mm
(3/32")
or
less
at
high
speed.
If the low speedcork ringis worn out, the start pedal willnot operate smoothly. Adjust it accordingto standard
adjustment (6).
(Note)
When
you
replace
the lowspeedcork ring,installit usinga newC ring
(RC-1381001-KP)
whichIsstored
in
the
accessory
box.
-
22
-
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