Yamaha JT1 Series Service Manual page 32

2. Inspection and Adjustments
The methods of insepction and adjustment are discussed below. This information will be of value in your
daily inspections.
CLUTCH CABLE MAINTENANCE
The clutch cable requires periodic lubrication to prevent the cable strands from rusting or hanging up in the
casing. First, disconnect the cable from the clutch lever by screwing the adjuster all the way back to the
cable casing. This will provide enough free play in the cable for you to slip the cable out of the lever holder
_through the slot in the lock nut, adjuster, and holder. Hold the cable upright and allow several drops of
liquid graphite to flow down the cable. Hold the cable upright for several minutes to permit complete
lubrication.
If the cable needs to be replaced, then perform the-steps above and disconnect the cable at the lever. Next,
disconnect the cable at the engine. Begin by taking off the cover that houses the clutch activating
mechanism (left side of the engine).
Looking at the inside of this cover, you will see the clutch actuating arm. Push the arm up and lift the
cable end off. Removing the old cable and hooking up the new one will take but a few moments.
CLUTCH CABLE ADJUSTMENT:
The clutch lever should have .080 to .120 in.
(2 to 3mm) free play to maintain full pressure
against the clutch facing. If the play is excessive, the
clutch will not disengage. If the free play is
insufficient, the clutch will slip.
1. First, loosen the lock nut above the left
crankcase cover. Then turn the adjuster either
in nor out depending on which direction is
necessary to arrive at 2-3mm (1/16"-1/8" free
play).
2. The second adjustment is located behind the
clutch adjuster cover. Removing the cover will
expose the adjusting set screw and lock nut.
Loosen the lock nut, rotate the set screw in
until it lightly seats against a clutch push rod
that works with the set screw to operate the
clutch. Back the set screw out
¼
turn and
tighten the lock nut. This adjustment must be
checked because heat and clutch wear will
affect this free play, possible enough to cause
incomplete clutch operation.
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