(6) Turn the adjusting yoke (13) clockwise one or two adjusting holes until the operating lever requires distinct
pressure to engage the clutch. Each adjusting hole represents about 0.005-inch clutch adjustment.
(7) Turn the adjusting yoke (13) clockwise to tighten and counterclockwise to loosen the clutch adjustment.
(8) The clutch adjustment is correct when the operating lever requires distinct pressure to engage the clutch.
(9) Remove the wire from the small cross-drilled hole in the adjusting lock pin (12).
(10) See that the adjusting lock pin (12) is seated properly in the adjusting hole.
(11) Start the engine and check the master clutch for proper operation. If the master clutch does not pull or if it
heats, slips, or jumps out of engagement, it must be readjusted.
139. Master Clutch Linkage (fig. 57)
a. General. The master clutch arm (6) is connected with the clutch lever shaft arm (1) by a master clutch rod (5).
b. Removal.
(1) Remove the cotter pin (7) and pin (3) from the lever shaft arm (1).
(2) Disconnect the yoke (2) from the lever shaft arm (1).
(3) Remove the cotter pin (7) and pin (3) from the master clutch arm (6).
(4) Disconnect the yoke (2) from the master clutch arm (6) and remove the master clutch rod (5).
c. Disassembly.
(1) Loosen the jam nuts (4) and unscrew the yokes (2) from the master clutch rod (5).
(2) Remove the jam nuts (4) from the master clutch rod (5).
d. Inspection. Inspect the jam nuts and yokes for cracks, wear, and damaged or stripped threads. Check the yoke
pins for wear, corrosion, and pitting. Inspect the threads on the master clutch rod for corrosion, damage, and wear. Use
new cotter pins when reassembling the linkage.
e. Repair.
(1) Replace all damaged, corroded, stripped, or galled jam nuts.
(2) Replace the yokes if the pin mounting holes are elongated, cracked, or if the edges of the yoke mounting
forks are broken off . Replace all cracked or twisted yokes.
(3) Inspect the master clutch rod for twisting and warping. Replace the master clutch rod if it is badly twisted or
if the
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