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Stuck choke cable? All plugs soaking wet?
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1996 XCR 600 Light Mod-Help/suggestions
- Thread starter sledheader
- Start date
All plugs were soaking wet, but I don't think the choke cable was stuck
I found this a few years ago and kept it. I don't know who wrote it but it has some good info in it. See attachment.
I'm guessing around 34 minutes is what you are talking about?
https://www.youtube.com/watch?v=ETtKkha8gE0
With the 34mm carbs. If you lowered the floats 1mm most of the problems went away.
The 38mm carbs didn't witness the same problems. Pressure check your needle and seats. Check to make sure the chokes are seated.
Your fuel pump may be leaking into the vacuum line.
Yes that is what I am referring to.
Good info. Basically what I got from that is "Don't buy a 1996 xtra lite triple!!!" What Do I have? A 1996 xtra lite triple with triple pipes lol.
Should I be scared? Or would a tear down and boring of the pto oil port severely decrease my chance of this thing going kaboom?
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That problem would only show up on the cylinder that the fuel pump pulse line is on. The cylinders are separated by seals and all 3 would not flood if you had that problem.
When tuning your needle bright you can use a brass washer for a #3 screw to fine tune the height. The washer is about half a needle height thick. Or you can buy plastic washers from yamaha for 100 times the price.
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When tuning your needle bright you can use a brass washer for a #3 screw to fine tune the height. The washer is about half a needle height thick. Or you can buy plastic washers from yamaha for 100 times the price.
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not sure about 96, but xlts were great motors with the stock pipe. when they came out in 93 everything was still piston port, and the extra cylinder made that sled feel more torquey imo. with pipes it turned more high strung. on or off type power. loading up at idle once warmed up is kinda the norm with pipes imo.
I think you would have a pretty reliable engine if you did that. Check or replace that pto bearing too if you decide to get into it.
I will get to tearing in to it as soon as I can. I'll post lots of pictures and videos of everything so hopefully all you fine gentlemen can help me not miss anything that needs replaced in the process!
I tend to get rather busy this time of year, so bear with me as I'm sure progress is going to be slower than I would like it to be
Good pointers on the XCR motors. I have little knowledge with the XCR's as we normally picked up XLT's and RMK's. I didn't realize they were notorious for being a "bad seed"
The XCR mono was basically the same motor. The issue was with harmonics. We witnessed many piston pin circlips rattle out. If you ran the wrong RPM they would come apart. I had 2 XLTs and 2 XCRs, no problems with either. if you clutched it to stay in the RPM band out side the harmonic area,
Don't put a pilot in smaller than a 35. The pilot jet is the only fuel your engine gets when you chop the throttle. Smaller than 35, and you run the risk of a burn down. You may need to go to a leaner slide to compensate for the pilot. Wish I had my old notes.
Edit:Tripple pipes made this motor very finicky, constant jetting.
The mono 600 had labyrinth crank seals. It can and will pass fuel from one cylinder to the others. It is not a positive seal.
The 96 ultra based motor had oil seals, for the water pump, on the crank.
Little bit of progress. Pulled the hood and nose cone. Also pulled the carbs and cleaned one of them. Carbs are absolutely filthy. I'm surprised it ran at all. It's got 250 mains in it. From my research with the pipes it may like 270s? Thoughts? Completely messed up one pilot jet taking it out they were so bad.
Also, the air screws were all only out just under one turn from snug. Normally they are 1-1/4 to 1-3/4? Is that a problem?
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Also, the air screws were all only out just under one turn from snug. Normally they are 1-1/4 to 1-3/4? Is that a problem?
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the discoloration in there wont hurt anything. long as they are cleaned out with carb spray, and the jets are cleaned. hold them up to the light and mike sure you can see light through the holes. id clean them up, put in new needle/seats, and run it myself. how do the pistons look with your flashlight up the exhaust ports?
All that discoloration is crap. Don't want it breaking free and clogging a jet. I took the end of a screwdriver and cleaned the bottom of the bowls all up. Jets are cleaned but I think I'll get a tip cleaner and try to clean up that pilot jet.
I didn't look at the Pistons yet. Thought about it then I got distracted cleaning carbs. I'll get some pictures when I split the case. I'll pull the Pistons out of the jugs and inspect
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