petcock repair

[speedlimit85]

I have a drip on the right only in reserve. Can it be fixed without replacing every rubber part?

[bikerphil]

Yes probably, does it leak where the selector knob is or from somewhere else?

You may be able to just replace parts 16 and 17, leaving the vacuum section of the tap alone.

[speedlimit85]

Yea the knob drip, exactly. I got the kit from parts n more on the way.

Can I just drain the tank and take just the face plate screws off, put the o-ring on the knob and replace the wholy rubber piece?

[bikerphil]

Yeah you could do that, just be ready to sop up whatever residual fuel comes out when you remove the selector. Also clean out any crud deposits before the new parts go in.

[LAB3]

For the cost involved it's probably a good idea for replace the fiber washers that go on the mounting screws too, you can get those at your local hardware store for pennies. Most places will not have them in metric sizes but there is an English sized one that's just a hair too small in the center, a quick ream with a piece of rolled up sandpaper takes care of that.

[gtem]

For the cost involved it's probably a good idea for replace the fiber washers that go on the mounting screws too, you can get those at your local hardware store for pennies. Most places will not have them in metric sizes but there is an English sized one that's just a hair too small in the center, a quick ream with a piece of rolled up sandpaper takes care of that.

That's a great tip Lab3. I think I just paid something crazy like $7 per piece for the OEM Yamaha fiber washers.

[DiverRay]

Probably a #10 screw size. The 6mm is just under 1/4". I've used 1/4" washers on 6mm with no problems, but have not tried the fiber washers. Keep that in mind when looking for lock washers, etc.

[DEEBS11]

I keep these in stock.

https://www.ebay.com/itm/155114685618?var=455294194495

[speedlimit85]

Not sure I put the 0-ring in right. There's a groove in it.

It works without leaking.But it's harder to turn.

[cajun31]

Not sure I put the 0-ring in right. There's a groove in it.

It works without leaking.But it's harder to turn.

They can be tight. You just need to be sure you don't pinch it along the rim. A small dab of silicone based grease helps too.

[jetmechmarty]

They can be tight. You just need to be sure you don't pinch it along the rim. A small dab of silicone based grease helps too.

I believe dielectric grease is is good for lubing the o'ring and the flat washer with the four holes in it. What I use is a thorough coat of Parker O'Lube.