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General Category >> Rubber Side Down! >> Why must petcock be “genuine” Yamaha?
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Message started by JED on 01/20/22 at 19:23:36

Title: Why must petcock be “genuine” Yamaha?
Post by JED on 01/20/22 at 19:23:36

Hi.

When doing the Raptor Petcock mod, why must the part be genuine Yamaha as opposed to a knock-off? Is the diameter different on the nipple or something?

Thanks kindly.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by justin_o_guy2 on 01/20/22 at 19:41:24

The fuel line diameter is super skinny on the Chinese knockoffs. They can't satisfy the fuel flow needs.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by JED on 01/20/22 at 19:46:15

Thank you.

Exactly what I was wondering.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by Serowbot on 01/21/22 at 08:12:21

Also make sure it's a Raptor 650 pet, not a Raptor 350.
Shorter stalk interferes with tank, and smaller output on those too.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by Yoshi on 01/21/22 at 17:31:01

Serowbot, it's a Raptor 660 petcock you should have bought

I once bought a replica from amazon, looked identical but did not work on reserve, not enough gas flow

Title: Re: Why must petcock be “genuine” Yamaha?
Post by zipidachimp on 01/21/22 at 22:48:36

Gas line for raptor/mikuni is 5/16".
Cheers! 8-)

Title: Re: Why must petcock be “genuine” Yamaha?
Post by buster6315 on 01/22/22 at 13:21:47

3A252324393E0F3F0F37252962500 wrote:

The fuel line diameter is super skinny on the Chinese knockoffs. They can't satisfy the fuel flow needs.

Flow issues you say? At my age I have personal flow issues to contend with. ;)

Title: Re: Why must petcock be “genuine” Yamaha?
Post by justin_o_guy2 on 01/22/22 at 15:09:33

Thank you, Buster,for reminding me. I don't have to pee every two hours while the sun is up.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by buster6315 on 05/23/22 at 10:07:50

will running with petcock in the prime position drain your reserve fuel also?

Title: Re: Why must petcock be “genuine” Yamaha?
Post by Ruttly on 05/23/22 at 11:05:59

Yeah , I recall draining the tank with it.

Title: Re: Why must petcock be “genuine” Yamaha?
Post by justin_o_guy2 on 05/23/22 at 16:48:46

On reserve, when you are outta gas,there is no reserve left.
You graduate to pedestrian, immediately.