Tank/Fuel tap questions

[Tony g]

My '75 has a mix of wrong parts so I need to find out what tank /petcock) spares I need (both leaking)
So its twin tap with ALFA taps both sides (non vacuum)
The main "O" ring seal that contacts the tank underside is straight sided not the type with extra angle in the middle of the straight if that makes sense.
Parts book for 75 show the angled sealing ring so Im not sure what I have. The tank could be later of course.
What years had twin taps and what years had the "straight" O ring v's the "angled" O ring.
If it helps the tank is held to the bike only by the rubbers ie no bolts anywhere.
TIA (I can't transfer pics right now sorry)

Tony

 

[gggGary]

all the non vacuum taps interchange the bolt centers are all 42.5mm
74-75 tanks have the rear key cap/latch 76-77 are also non vacuum but have the front key centered cap.

https://www.mikesxs.net/search?q=petcock xs650

 

[Tony g]

all the non vacuum taps interchange the bolt centers are all 42.5mm
74-75 tanks have the rear key cap/latch 76-77 are also non vacuum but have the front key centered cap.

https://www.mikesxs.net/search?q=petcock xs650

As expected mine is odd then. Key is in front end of the cap (nearest forks) and spacing of bolts is 46mm. ?
Tony

 

[Wingedwheel]

Got a pic of your tank?

 

[Tony g]

Heres my tank and taps.

 

[Its been a long time]

Heres my tank and taps.

That's a US spec 1977 XS650D tank. I fitted the fuel taps from Yambits to mine. So far, so good.

 

[Tony g]

That's a US spec 1977 XS650D tank. I fitted the fuel taps from Yambits to mine. So far, so good.

Whats the bolt spacing on the yambits taps? How can you tell mine is a US '77 tank? Is there a tank difference page Ive missed maybe?
Cheers

Tony

 

[Its been a long time]

Whats the bolt spacing on the yambits taps? How can you tell mine is a US '77 tank? Is there a tank difference page Ive missed maybe?
Cheers

Tony

Bountiful blue (your tank) was a US colour for 1977. I have the same thing. It's of course possible that it isn't a 1977 tank that's been painted to look like one. The fuel filler cap is correct though.

Hole centres 46mm.

 

[Its been a long time]

Yambits fuel taps. Hole centres 46mm on 1977 US import XS650D tank.

 

[Tony g]

Yambits fuel taps. Hole centres 46mm on 1977 US import XS650D tank.

View attachment 360565

Thats great thanks , was it only that year that had 46mm centres?
Cheers

 

[Its been a long time]

Thats great thanks , was it only that year that had 46mm centres?
Cheers

Some years had vacuum taps. No idea of the hole centres. Best to cross reference part numbers to be sure.

 

[Tony g]

Some years had vacuum taps. No idea of the hole centres. Best to cross reference part numbers to be sure.

Yambits dont give the oe number on those I dont think. Im going to try some new rubber seals 1st step