1986 R80RT-do I need to lube throttle? Not cable- do I need to lube throttle mechanism at grip?

[tallcanuck]

Low original mileage - only 28000km - Bike sat in garage with previous owner for years

Curious if you ever need to lube throttle through the plug hole (#25) etc ?
Thanks all

 

[GTRider]

The correct way to lube the throttle is to remove screw #8 and cover plate #9 to expose the gear assembly and chain pull. The throttle tube (6) can then be slid off the bar after removing the friction screw and spring (#26), and the tube, bar, and chain gear cleaned and checked for wear. Once the bar, tube, and gear are cleaned they can be greased with a lightweight grease like white lithium grease, and reassembled. Note that there are marks on the throttle tube gear and the chain gear that must be aligned on reassembly. HTH!

Best,
DeVern

 

[tallcanuck]

holy Smokes!! Wow thanks DeVern !!

 

[GTRider]

holy Smokes!! Wow thanks DeVern !!

You’re quite welcome! I should also mention that #26 in the diagram is an optional part so may or may not be present, and that if the bike has heated grips there will be wiring inside the bar that must be handled with care. Good luck with the project on what sounds like a new-to-you bike!

Best,
DeVern

 

[kbasa]

While you have it apart be sure to inspect the teeth on the throttle tube. When they wear, you’ll have slop in the throttle.

 

[beemerguru]

While you have it apart be sure to inspect the teeth on the throttle tube. When they wear, you’ll have slop in the throttle.

You can tell if the teeth on either or both parts are worn by slowly rotating the throttle grip. If you feel or hear a slight grinding sound, take the cover off and look at the first three teeth to the right of the hash mark. If they're bent over and worn down, unlike the next ones over, replace both parts.