Throttle Maintenance; Cable Junction Maintenance - Yamaha LB50IIAC Service Manual

Throttle maintenance
1. Remove the two Phillips head screws
from throttle housing assembly and
separate two halves of housing.
2. Disconnect cable end from throttle grip
assembly and remove grip assembly.
3. Wash all parts in mild solvent and check
contact surfaces for burrs or other
damage. (Also clean and inspect right-
hand end of handlebar.)
4. Lubricate contact surfaces with light
coat of lithium soap base grease and
reassemble.
NOTE:~~~~~~~~~~~
Tighten housing screws evenly to main-
tain an even gap between the two
halves.
5. Check for smooth throttle operation and
quick spring return when released and
make certain that housing does not
rotate on handlebar.
Cable junction maintenance
The throttle cable cylinder (junction point for Autolube control cable) must be periodically
maintained.
1. Remove throttle cable number one from
handlebar housing.
2. Remove throttle cable number two from
carburetor mixing chamber top.
3. Remove Autolube pump cable from
pump pulley. Remove cable adjustor.
4. Remove seat and fuel tank.
5. Remove cable/cylinder assembly com-
plete.
6. Remove cylinder cap, throttle cable two
and Autolube pump cable.
7. Wash assembly thoroughly in solvent.
8. Lubricate all associated cables.
9. Apply a thin coating of lubricant to
cylinder walls.
NOTE:
. A small amount of lithium soap base
grease may be used in lieu of cable
lubricant.
However, if machine is to be used in ex-
treme cold, use the cable lubricant.
-127 -
10. Reassembly all cables. Make sure
cylinder is sealed from damage due to
weather and riding conditions.
Re-install.
See cable routing diagrams for correct
installtion position. See Mechanical
Adjustments Chapter for correct cable
adjustment.