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Thread: 98 xl 1200

  1. #1

    98 xl 1200

    I just bought a 98 xl 1200.

    First ski I have ever owned.
    Was told the engine is new (4-5 hours). Was told he told the mechanic to make it faster than stock. So not real sure what was done. Triton is stamped into the top of the engine.
    Engine was replaced about 14 months ago, rode once and put up.
    So I am trying to break in the engine by keeping the rpms low for a few more hours.

    Couple of questions.
    I generally have to pour fuel into the carbs to start it. After it warms up no problems. The choke cable does not work, seems too long. But I tried closing the choke with my finger and still no go.
    The screws that hold the cover over the carbs have backed out and fallen in the hull. Any idea what bolts fit it?

    This has happened twice. While running, the engine cuts off (like pulling the stop key). I can hit the starter and keep going.
    Does not seem to me like this, but could it be the old gas?

    The fuel gage does not seem to work. The first time I took it out I put 6 gallons of fuel in it. I still get the fuel low warning.

    Any thing I need to watch out for / gottchas?
    The ski has been converted to pre mix.

    Thanks
    Tom


  2. #2
    Yamaha artisan Cutlass's Avatar
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    Triton is an aftermarket head, so it probably has higher compression then stock.
    ditch the choke and get a primer kit.
    Does the engine just shut off at idle or while your cruising around?
    14 months is a long time for gas to sit. you should drain the tank and fill it up with fresh premix
    I think you should do a compression test.

  3. #3
    shut off both times while running around. once at 20mph and once at 40.

  4. #4
    Yamaha artisan Cutlass's Avatar
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    better check the compression.

  5. #5
    checked compression and was not good on all 3
    what is a good price on 3 pistons (50 over) with gaskets? i found a place for $270. cape fear motor sports has anybody bought from them?

    how big is the stock head chamber? and stock psi?
    thinking about ditching the triton. i want a reliable ski and not have to run race gas in

    primer kit.
    since i pre mix can i use the old oil ports on the intake above the carbs?

    thanks
    tom

  6. #6
    Yamaha artisan Cutlass's Avatar
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    Cape Fear might be ok. Occasionally their name pops up here with bad reviews, so be cautious.
    If you want a reliable ski, diagnose why the top end failed. Buy or build a crankcase pressure test kit and see if the crankcase has any leaks BEFORE you tear it down. Its important that the crankcase is 100% sealed with no air leaks.
    And spend a little more then 270 on pistons and topend gaskets. The best pistons you can by are ProX or OEM. The best gaskets you can buy are OEM. And those are my recommendations.
    You could get WSM pistons. They seem okish and some people have success with them. But you're still gonna want OEM gaskets.

    Stock psi on this motor is 120psi. The most you can go with premium fuel (91 to 93 octane) is 145-150ish psi.

    You can put the primer on the old oil injection fittings. that should work just fine.

  7. #7
    had ring failure. too late to pressure test the crank case.
    might be looking for a new head also.

    where is a good place to buy? i can't find OEM pistons or gaskets.

    looking more to get in running and sale it. i want to move up to a 4 stroke.

    thanks
    tom

  8. #8
    Yamaha artisan Cutlass's Avatar
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    Ok if you wanna get it running and sell it, then skip the OEM stuff and get whatever. Just get the 270 top end kit.

  9. #9
    I don't mind spending a lil more for better quality. The pro x are about 35-40 bucks more per piston.

    I have the head off. Do I just take off six bolts and lift off the jugs? Like in the pic?
    Click image for larger version. 

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    Thanks
    Tom

  10. #10
    Yamaha artisan Cutlass's Avatar
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    yes and you also need to remove the exhaust pipe. The exhaust manifold is bolted to the cylinders and could probably be left on

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