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78 GS1000E, oil sightglass in clutch cover replacement

philosopheriam

philosopheriam

Forum Mentor
Past Site Supporter
Folks,

Bought a new oil sightglass from Z1 Enterprises and it looks identical to the old one - I carefully punched the old one out with a socket, and when I went to install the new one, I noticed that it seems very loose in the clutch cover hole - I can push it in/out with my finger.

Are the sightglasses glued/epoxied into place? Any info would be appreciated.
 
should be a very tight press fit, i wouldn't trust it if its that sloppy. you can easily imagine what would happen if it popped out on a ride!
 
I replaced mine with one from a kawasaki GPZ305. exactly the same size and fits in tight. only difference is that it doesn't have the metal "spider" behind it so it is easier to see, and easier to clean
 
So, I called Z1 and spoke to Mike - he measured the OD on the Suzuki sightglass in comparison to the one for the Kawasaki that they also sell. The OD's are apparently the same. As I was speaking with him, I could hear him yelling to someone else in the background, and according to that other person, who has done a couple of these sightglasses, they pop in quite easily. So, now I'm wondering if I should just use an adhesive sealant and forget about it...
 
Mine was definitely a tight fit, had to use a bit of force to get it in. No sealer used and it doesn't leak a drop.
 
Agemax said:
I replaced mine with one from a kawasaki GPZ305. exactly the same size and fits in tight. only difference is that it doesn't have the metal "spider" behind it so it is easier to see, and easier to clean
Click to expand...

You wouldn't happen to know the part number of your Kawasaki sightglass - or perhaps the year of the GPZ350 you used?
 
I replaced one on an 1100gl a few yrs ago and as I remember it was tight but I also used some type of bond or adhesive.
 
I am having my clutch cover re-finished and they tell me I must remove the sight glass and the clutch shaft.
How are these two item removed? 79GS 1000
 
Pry the seal out of the clutch shaft and it lifts out the top of the cover. Push the sight glass out from the outside into the inside of the cover. Been a while and i dont remember if the basket thing has to come off he sight glass first or not. Guess one could grip the shaft with vice grips to tap the shaft and seal out of the cover using the shaft to drift the seal out also.

http://www.partsoutlaw.com/oemparts/a/suz/50d40287f8700230d8b4e7ca/crankcase-rh-cover
 
Last edited:
I broke mine. I have spares on 750 engines, 1000 engines, but how can I get it out without breaking the glass? Heat?
 
I think someone once said they got a Kawasaki kit that fits the GSs hole as well. Dont remember the thread but i vaguely remember the fitment issue was brought up.

Why not just replace the lens and reinsert the gauge with some good RTV around the edges to prevent leaks. Maybe heat it a little when reinstalling to make the rubber a little more cooperative???
 
Last edited:
GS lens PN...........LENS, OIL LEVEL CHECK
Suzuki Part# 11971-45010 for all 4-cyl GS bikes.

This was in the ODDS AND ENDS section on Bikecliffs.
 
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