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Tach question

  • Thread starter Thread starter jward1989
  • Start date Start date
J

jward1989

Guest
Ok, I'm setting my bike up to run speedo only no tach. My question is do I have to plug the hole in the engine were the tach cable comes out? And if so, then with what?
 
I would have thought you would need to plug the hole otherwise oil will escape, on my 650 their is a M6 bolt holding the tacho unit in place, if you take this off and pull the worm drive out you could pop in a S/Steel bolt and nylock.
 
you can just leave the tacho drive on the head and remove the cable. as long as the seals are good it wont leak oil. or you can make/buy a blanking plug to fit if you remove the drive unit altogether
 
During the transition from cable to electronic tachs, several models were made with a blanking plug.

Look on the cylinder head fiche for the 2004 GS500, for example:

TACHOMETER HOLE
26442-45000
About $10, and the seal band should be around $4

Used on the following models:
ALT125 (1983)
ALT125 (1984)
ALT50 (1983)
ALT50 (1984)
DR100 (1985)
DR100 (1986)
DR100 (1987)
DR250 (1985)
GN125Z (1983)
GN250 (1982)
GN250 (1983)
GN250 (1985)
GN250 (1986)
GN250 (1987)
GN250 (1988)
GS1000S (1982)
GS1100E (1982)
GS1100E (1983)
GS1100ES (1982)
GS1100ES (1983)
GS1100S (1983)
GS300L (1982)
GS300L (1983)
GS300L (1985)
GS450GA (1982)
GS450GA (1983)
GS450GA (1985)
GS500F (2004)
GS500F (2005)
GS500F (2006)
GS550E (1983)
GS550EF (1983)
GS550EF (1984)
GS550EF (1985)
GS550EF (1986)
GS550ES (1983)
GS550ES3 (1983)
GS550ES3 (1984)
GS550ES3 (1985)
GS550ES3 (1986)
GS550ESE (1983)
GS550ESE (1984)
GS550ESE (1985)
GS550ESE (1986)
GS550ESF (1983)
GS550ESF (1984)
GS550ESF (1985)
GS550ESF (1986)
GS550ESG (1983)
GS550ESG (1984)
GS550ESG (1985)
GS550ESG (1986)
GS750S (1983)
LT125 (1983)
LT125 (1984)
SP100 (1983)
SP125 (1982)
SP125 (1983)
SP250 (1982)
SP250 (1983)
SP250 (1985)
 
Tacho drive condition

Tacho drive condition

hope it is OK to jump on this thread...attached is a photo of a tacho drive, just wondering if it is worn and needs replacing or is OK...the shaft that goes through the seal is 'chamfered' just before the sholder, can anyone tell if this is wear or design..there was a small leak out the seals but impossible to tell which one...

cheers for any help

bikepics-2638592-full.jpg
 
resolved

resolved

did some measuring..the sprung seal runs 3mm up the shaft from the sholder..all cleaned up OK...just need to address the sheared retaining stud now....right angle drill I think


Roy :)
 
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