Fuel Shut Off (full tank trailering)

[RX1 Yooper]

I agree about installing shut-offs being a smart idea (that's probably why Yamablue didn't have them), but I have a question. I can see the gas in the combustion chamber, which caused the exhaust fire, but if enough gas is getting into the crankcase to raise the oil level, why wasn't the sled at least flooded, and hard to start?

 

[RX1BANDIT]

The motor can be hard to start. I have seen it happen alot even on fuel injected cars. The wash down effect take the oil film off of the piston rings and cylinders. When this happens the compression goes down and the engine just whines when you try to start it ( like the plugs are not in when you turn it over) The fuel may never even get the plugs wet untill you try to start it. So it may not flood out at all.

I think it is a good idea as well. I am waiting for some shut offs and will install as soon as I can.

No snow in southern MN Gotta go north sometime.

 

[rock]

I've had several Yamaha's over the past six years and I have always installed shut-off valve's due to the fact that I trailer three hours to get to the excellent conditions in northern Maine. They're inexpensive and I would recommend that anyone that trailers sleds put them in. The peace of mind is worth that.

 

[Kren]

This may be a stupid question, but I dont understand why Yamaha does not include fuel shutoffs on the sled if it has such an important value...am I missing somthing?

 

[rock]

No, it's not a stupid question. I suppose Yamaha doesn't install them because people who ride just locally don't need them. I've also heard people say that they just don't trailer with a full tank and they're fine. But, for around $15, I'll cover myself.

 

[SuperStroker!]

Guys-

Not to rain on this post but but what you're doing by adding these shutoffs concerns me a bit!

I'm not saying don't add fuel shutoffs, simply consider them as possible running restriction to fuel flow!

If you add a fuel shut off to your fuel lines, you might consider the next larger shutoffs, cant remember the size at the moment...I'm old but I WOULDN'T DO WHAT YOU DID to my 4-Stroke!

If you add the larger ones, you'll simply need to heat stretch the ends of the fuel like to fit the larger valve diamater.

Want a better solution?

Leave the lines alone, dont add any fuel shutoffs and go to Cole Parmer Chemistry supplies and get the anvil type tygon tube crimpers that have the thumb screw.

Just before you leave, put 2 on and when you reach your destination, take em off or your sled wont run!!! Lol.

Seriously, I never add any restrictions in the fuel lines I don't need.

Consider this also>>>>> 4-strokes like more fuel not less fuel at full song and I ain't takin no chances cause i want to go faster, not slower!

 

[rupprider]

ssssh, SuperStroker. You just gave away my secret. I had those tygon tubing clamps from when I worked in the chem lab. Never thought to mention them on the forum. PS they do work well and don't damage the gas line. Peace RR

 

[Snorover]

As much as I have to trailer to get to the best riding I would never put a clamp on a flexable fuel line as that would have to do damage to the line, so now you have an additional problem.

I have had Yamaha's that have had fuel shut off switches and the one that they have listed is the same as they had on the machines, with the same size fuel line.

My opinion is to put in the fuel shut off switch.

Has anyone installed them and checked out there high speed????

Just my opinion from experience.

 

[SuperStroker!]

As much as I have to trailer to get to the best riding I would never put a clamp on a flexable fuel line as that would have to do damage to the line, so now you have an additional problem.

I have had Yamaha's that have had fuel shut off switches and the one that they have listed is the same as they had on the machines, with the same size fuel line.

My opinion is to put in the fuel shut off switch.

Has anyone installed them and checked out there high speed????

Just my opinion from experience.

You wouldn't put a clamp on the fuel lines either!

These are special devices that are designed to close and meter liquids during chemical reactions. The device I describe, is designed specifically for this purpose. That means, by design, they wont damage the fuel lines.
I would suggest you go to the Cole Parmer web site and take a look.

This I know for sure!

A 1/4" right angle fuel shut off is a bad idea, its a restriction!

A 5/16" right angle shutoff is a good idea, since it measures 1/4" on the ID! Fuel line diameter matching becomes a problem.

No fuel shutoff is the best idea and a way to close the line is by using the specialized device I describe above. its about the size of a 50ct piece. I have been using them for 25 years on all types of sleds and never had a problem with them, sooooo why should you?

Just my opinion, y'all can do what pleases you most.

 

[AAR]

Fuel shut off valves

AAR,......Did you make the bracket for your plug holder or can you buy it?

Banjo I made that bracket myself to hold the spare spark plugs. I haven't needed them yet, I guess it's from all the years of riding a 2 stroke.

 

[Snorover]

I wouldn't put on a 90 degree fuel shut-off either, however I just put those NAPA 7-02324 fuel shut-offs on and it took me about two minutes. Sure like them.

 

[Tf18]

Fuel shut offs

I just bought the Napa in line fuel shut offs also. Have not installed them yet. Was wondering if anyone has run their sled with these type of fuel shut offs installed and if they experienced any problems?

 

[Bossrx1]

I put 160 miles on my 05 RX1 with the napa valves on it. These were the first miles ever on the sled. I never really held the sucker wide open yet and only saw 9500 so far on the tach. They seemed to work fine. I will be watching for my rpm's to rise to 10200-10500 with some more miles on the engine. If I see that happen I will leave them.

I have been breaking this one in pretty hard.....rode it like I would any other sled after the first couple easy miles.

 

[grader]

anyone concerned about fuel flow or restriction might want to have a look at the screens under the needle and seat assembly in each carb.merry xmas everyone. and take it easy on the be safe

 

[Mighty]

The metal valves I used do not restrict the fuel period, they are the same inside diameter as the fuel line. I ran mine all last season with no issues. I would never put a clamp of any design on my fuel lines because with the cold temps you know the lines will take some time to regain there natural state. I bet that those lines would now be more restrictive then any valve. Lastly, I have one of those plastic valves on my generator and every time I use it it leaks fuel. I wouldn't recommend them.