Simple question!

jafilson
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25 Apr 2008 10:57 #209027 by jafilson

Simple question! was created by jafilson

How does the fuel tank vent? It seems sealed up to me.
(1981 KZ650 CSR) Just curious?

1981 KZ650H1 MFG 1/81 9966 Miles
Keihin vacuum piston carbs. 4 in 1 exhaust.
Pekin, IL

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bountyhunter
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25 Apr 2008 11:30 - 25 Apr 2008 11:33 #209042 by bountyhunter

Replied by bountyhunter on topic Simple question!

jafilson wrote:

How does the fuel tank vent? It seems sealed up to me.
(1981 KZ650 CSR) Just curious?

There's a small hole in the gasket that seals the cap on top. You won't believe how long it takes to remember that when it gets plugged with crud and you keep running out of gas from the vacuum lock.....:laugh:

1979 KZ-750 Twin

Last edit: 25 Apr 2008 11:33 by bountyhunter.

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vach
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25 Apr 2008 12:50 #209058 by vach

Replied by vach on topic Simple question!

how can you tell if your gascap is sealing correctly?

1979 kz650 B. Chicago, Illinois

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jafilson
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27 Apr 2008 16:25 #209597 by jafilson

Replied by jafilson on topic Simple question!

Thanks! I still couldn't see a hole but I'll keep looking!

1981 KZ650H1 MFG 1/81 9966 Miles
Keihin vacuum piston carbs. 4 in 1 exhaust.
Pekin, IL

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rdgrnr
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27 Apr 2008 17:02 #209602 by rdgrnr

Replied by rdgrnr on topic Simple question!

vach wrote:

how can you tell if your gascap is sealing correctly?

Kevin,
You should be able to feel the spring pressure when you close the tank. And check your cover gasket for cracks and breaks. I couldn't figure out why I kept smelling gas when I couldn't find a leak anywhere. Turned out the cap gasket was cracked, and gas was evaporating out the cap.:blink:

77 KZ650B1
80 440 LTD Sold
78 GL1000 Naked Wing Sold
80 CM400E Sold
Brainerd, MN

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bill_wilcox100
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27 Apr 2008 18:11 #209616 by bill_wilcox100

Replied by bill_wilcox100 on topic Simple question!

For your 1981 KZ650 CSR the gas tank seal goes for about $5 new.

Z1 Link:

www.z1enterprises.com/detail.aspx?ID=1906

It works fine (don't ask).

Best of success.

1977 KZ650-B1 (Stock)
Upgrades:
- Dyna S Electronic Ignition (DS2-2)
- Dyna 3 Ohm Coils (DC1-1)
- Coil Repowering Mod
- Progressive Springs Front & Rear
- Saddlemen Seat Cover
- New Metallic Red Re-Paint & Repro Badges.
Montreal, Canada

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Simple question!

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