Yamaha JT1 Series Service Manual page 16

ENGINE· Handling of the Oil Pump
2) Autolube Cable Adjustment
With the throttle cable properly adjusted, check the pump
guide pin location. It should be no closer than 1.5mm
(.060") to the raised boss of the pump pulley. If it is too
close, loosen the lock nut (see Figure
2-3-7)
and turn the
adjusting bolt until adjustment is correct.
lock nut.
Tighten
Next, turn throttle to full open position, the guide pin
should not strike the raised boss of the pump pulley in this
position, if it does, loosen the adjusting bolt slightly to
provide clearance.
2-3-3 Bleeding
Lock nut
Guide pin
Fig 2-3-7
When the pump has been removed or the Autolube oil has run out. air will enter the pump. The air will cause
an irregular flow of oil after the pump
1s
mounted again or the
01!
tank
1s
refilled In order to prevent such an irreg-
ular flow of oil.
b'
leed the pump in the following manner
I ) Remove the bleeder bolt.
2) Next. rotate the starter plate in the direction of
the arrow marked on the plate. Continue turn-
mg the plate until no air comes out with the
011
and
tighten the bleeder bolt To facilitate
this
bleeding,
fully open the accelerator grip
and rotate! the starter plate. As the plunger
stroke becomes greater, the air can be quickly
bled.
Fig 2-3-8
Fig 2-3-9
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