Thule 686 Atlantis 1600 Cartop Carriers - Page 2 - Answered Questions & Fixed issues

It could be many different items, choke stuck, ignition switch etc. but more importantly have you taken care of your recall? https://www.cpsc.gov/Recalls/2017/Arctic-Cat-Recalls-Snowmobiles

I would check the ignition timing first.

Unscrew it from the back of the speedometer and follow it back to where the cable terminates at the hub of the track. Undo it there and replace it with the new one. https://www.google.com/search?q=1996+Yamaha+Vmax+XT+600+snowmobile.+How+can+I+replace+speedometer+cable ..

Try contacting Ski Doo directly to inquire.

6 months to a year after they are posted. not always but a lot lately !!

https://www.youtube.com/watch?v=9BevWIdFi20

check fuse --need to narrow down problem spray with starter fluid if no start need to check ignition system starts then fuel delivery problem

https://www.youtube.com/watch?v=h-tmU7UlJho

Some info and video which may help with some symptoms of no spark. https://www.youtube.com/watch?v=PWrvHFI-C-o https://snowgoer.com/uncategorized/snowmobile-tech-tip-diagnose-weak-spark-or-lack-of-spark/ https://www.youtube.com/watch?v=gJsYGTLzA2o https://www.youtube.com/watch?v=DmjdtpoRix8 https://www.youtube.com/watch?v=uggJMnuexMc https://www.youtube.com/watch?v=PnzsuRAV-Ro https://www.youtube.com/watch?v=wbHSfHjMp28 https://www.dootalk.com/forums/topic/1195074-74-tnt-340-spark-issue-confused/

It's pretty basic and old school on all 550's and 380's unplug the back of the ignition ( it will now start without the key using the pull cord) remove the rubber boot from the ignition and unscrew the nut holding the ignition. Don't know why it needs replacement they pretty much never fail my 09 gtx 550 has over 12k and no problem except freezing occasionally.

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Could be a short developing in the electronics that runs the motor and is changing the timing.

here's a website that has all this information about all this and manuals everything totally free there are many actually but I personally like few .. let me know if u need help thanks

The needle and seat in the carbs or one of the carbs Float arms are probably bent, kinked to one side or could be defective, your needle and position may be varnished from ethanol fuel and not sealing or other contamination in the carburetor. Try removing and cleaning but don't remove the float pin unless you know what you're doing, im a diesel tech and its easy for me, I've seen other mechanics break them or lose the spring under it. Be gentle if you do and keep the float depressed until the pin is out and then let it up slowly. The carbs, all or one of them don't shut off fuel as they should, and the negative vacuum from the DPM pulls fuel into it, and it leaks too. The purpose of a needle and seat is to shut off fuel when the float rises, its a complex build of a simple function. If you know how to rebuild a carb, then I would recommend pulling the flute and venturi. The pipe and venturi above the needle valve can get green corrosion on it plugging its holes, and it will not even let air through. This is caused by using ethanol fuel and not draining the carbs and tank during the summer. Ethanol fuel has a high water absorption level; non-ethanol fuel does not. This carries moisture to the carb and brass components in it. They tarnish and clog. Ethanol sucks, switch to premium non-ethanol or straight gasoline high octane, use a fuel stabilizer if you don't. seafoam works excellent on cleaning out the engine, don't use too much as it can burn rings over time. We used to use +104 in our sleds, but that was when gas was $1.00 a gallon in high school. Follow the directions and clean it out. During assembly watch to ensure you are putting the float bowl on correctly as I have to see the edge push the side of the float ear up and bend the pin which causes the float not to rise completely and never shut off fuel, there is a video on YouTube for this but I can't seem to find it at the moment because I don't remember what I specifically searched for.

Are you sure reverse isn't locking up the engine?

You have a bad coil or wire.

carb needs cleaning work

Check that all of the pulley wheels and tensioner don't have any defects in the running faces.

https://www.google.com.ph/search?rlz=1C1GGRV_enPH824PH824&biw=1094&bih=474&tbm=isch&sa=1&ei=I0IIXNCkOs-JoASf8ZjICQ&q=wiring+diagram+1993+ski+doo+safari+rally&oq=wiring+diagram+1993+ski+doo+safari+rally&gs_l=img.12...528978.528978..530722...0.0..0.85.85.1......1....1j2..gws-wiz-img.vZZXUDyBa6A

Drain plug for what?