RX1 Yooper
TY 4 Stroke Junkie
I turned my sled on the right side to make installing skid MUCH easier. I tuned the fuel shut-offs off to prevent flooding. Sled still flooded badly, and I had to run it a long time, after new plugs, to get rid of the fuel.
I think next time, I will run the carbs dry before tipping it. Any other suggestions?
I think next time, I will run the carbs dry before tipping it. Any other suggestions?
I talked to my dealer this weekend. He said he wished Yamaha wouldn't print so much info. The whole fuel shut off deal is a cover their A$$ type of thing. He does not recomend installing them, and he also refuses to install them. He said the only way they do anything is to shut them off and run the sled dry before trailering. He also said the whole vaccume when off is BS. Unless you only ride one mile on the freeway the bouncing of the sled and trailer is enough to undo the vaccume. He sells approx 150 Yamaha sled a year and has never seen a problem with trailering without fuel shut offs. Just give him a call. Vince at Pittsburg Motor Sports, Pittsburg NH.
LazyBastard
TY 4 Stroke God
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Fuel shut-offs are great if your carbs are screwed and the float valves don't seal - that means that without fuel shutoffs the gas tank will slowly syphon through the carbs into the crankcase. I know someone who's sled does this.
Snow Fever
Expert
Here is a not very common tip for anyone that floods a RX-1 or RS. If you want to get it started fast instead of cranking the $hit out of it, this is what you MUST do. This includes Turboed sleds! 1st remove the air box, dump out any raw fuel that is in the air box, then stick your fingers into the throats of all the carbs and lift ALL the slides up all the way with your fingers, then have a buddy hold the throttle wide open and turn the key. Starts up right away. The reason for lifting the slides is because they are vacum operated and if you just hold the throttle wide open and turn the key it makes the carbs pull a vacum in the float bowls and just draws up more fuel. With the slides and butterfly valves open there is not enough vacum to pull gas but you get LOTS of air and wala it starts right away. NOT THEORY but FACT. This is the BEST way to start one of these animals when they are flooded PERIOD! 
TopGunn
Pro
Good piece of info there SNOW! I'll remember that
impalapower
TY 4 Stroke God
I had mine on both sides tonight. Started later, held throttle to bar and it fired after a bit of hesitation. Maybe I got lucky.
nhrxrider
TY 4 Stroke Junkie
Pittsburg motorsports??? I wouldn't go there again if my life depended on it. The first year I owned my RX I had trouble with the brake light. I was on a trip to Pittsburg (at the time it was almost a 4 hour drive up there) and I got tired of people almost running in the back of me. Went there to see if they could check out the issue. They said sure, start filling out this paperwork. I asked how long it would take, since I was on vacation and only up for the week. They said I coudl pick it up in a few weeks. A FEW WEEKS FOR A BRAKE LIGHT??? The guy laughed and said they were too busy taking care of the suckers (their word) that crash and need their sled fixed ASAP to get back on the trails. Cash repairs come before warranty repairs, so if its not paid by cash, it doesn't get fixed until they run out of cash work. Real nice way to do business.
As for their opininion about fuel shutoffs, just do a search to see how many people on here have had major engine problems because of flooding while trailering. And there is no reason NOT to install shutoffs...they can't hurt anything. Yamaha was just plain dumb not to install them. Why do you think every dirt bike and ATV comes with them? And every other sled with a carb? Oh, but the company that brought us a primitive rear skid on a $9000+ machine, engines that burn oil, and handling that makes the sled feel 15 years old...couldn't possibly make a mistake.
Jim
As for their opininion about fuel shutoffs, just do a search to see how many people on here have had major engine problems because of flooding while trailering. And there is no reason NOT to install shutoffs...they can't hurt anything. Yamaha was just plain dumb not to install them. Why do you think every dirt bike and ATV comes with them? And every other sled with a carb? Oh, but the company that brought us a primitive rear skid on a $9000+ machine, engines that burn oil, and handling that makes the sled feel 15 years old...couldn't possibly make a mistake.
Jim
Boston RX1
TY 4 Stroke Master
Maybe this is myth, but if a 5 dollar part can save troubles down the road, why not! Also, most other engines that get trailered, lawn mowers, snowblower, motorcycles, ATV's all have them. If it wasn't an issue, why did they put them on?
All I know is since I installed my fuel shutoffs I have had a hard time starting after trailering, where I never did before.
nh, sounds like you should consider switching brands if you are that upset with Yamaha.
As far as pittsburg goes, I have never had a problem with them. They have always been willing to help me out, and have been real fair on pricing also. I also believe that they do a better job with Yamaha sleds than most other dealers also since they only sell Yamaha.
nh, sounds like you should consider switching brands if you are that upset with Yamaha.
As far as pittsburg goes, I have never had a problem with them. They have always been willing to help me out, and have been real fair on pricing also. I also believe that they do a better job with Yamaha sleds than most other dealers also since they only sell Yamaha.
Boston RX1
TY 4 Stroke Master
MD, how many times has this happened? I thought you just installed the shutoffs? I have been using them for about 2 years and never had a problem. My sled starts right away. In fact, I can't release the key fast enough because it starts so fast. This might be just a coincidence. Keep us informed.
Twice, I went up two times as well as trailered around here with out the shut offs and never had an issue. I have been up two times since installing them and it is just plain flooded out. Have to change plugs and everything. However I leave them in the on position on the ride home, and again it starts right up. Has me baffled.
Mikey
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Easy solution
Before you trailer anywhere just run your sled and pinch off the hoses with your fingers until the sled runs outa fuel (takes a minute or so) cost is nothing and the piece of mind is priceless.
Before you trailer anywhere just run your sled and pinch off the hoses with your fingers until the sled runs outa fuel (takes a minute or so) cost is nothing and the piece of mind is priceless.
4Fighter
TY 4 Stroke God
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I always have the sled on its side either because of the Pro-Action adjustments, or carbide changes, oil change (no lift) etc... And it always starts for me - throttle to the bar. That's a good idea to hold the slides open, but what about potential backfiring? I'd hate to have my fingers soaked with gas and stuck in the carb when that happens.
As for the shut-off valves - If I had them, I would shut them off and let the sled run itself out. JMO
The ONLY time I have ever severely flooded the engine is when it's -20F or colder and it doesn't stay running right away. Then I almost always have to change the plugs, and wipe-down the airbox, to get it to go.
Just my $.02
As for the shut-off valves - If I had them, I would shut them off and let the sled run itself out. JMO
The ONLY time I have ever severely flooded the engine is when it's -20F or colder and it doesn't stay running right away. Then I almost always have to change the plugs, and wipe-down the airbox, to get it to go.
Just my $.02
T-ReX1
Veteran
Guys, I think the reason quads, bikes, lawnmowers, etc, have fuel shutoffs is because they use gravity feed to the carbs (no fuel pump). The fuel pumps used in most snow machines have a check valve that will not allow the tank to drain into the crank.
Trxster
TY 4 Stroke Junkie
I have the shutoffs and they are great. Are you turning them off and actually running the gas out of the carbs? If so, it is going to take some pretty decent cranking to create enough vacuum to activate the fuel pumps to fill the bowls. If that is what you are doing, you need to carry a can of starting fluid....give her a squirt and it will fire right away and will quickly fill the bowls. I have flooded mine a few times and just pinned the throttle and cranked for maybe 5-10 seconds and it lumbered back to life. It behaves no differently now than it did prior to install of shutoffs.
T
T
