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  1. #1

    Yamaha XL700 turns off on hose while idling

    Hi! I am looking to get my third pwc, and maybe second XL700...the price is really low.

    The problem is,owner said: "shaft bearing overheats after 15 minutes idling on hose,the engine just turns off and you cannot spin it with hand,I leave it for 1 minute,and after 1 minute i take out plugs and it spins normally on starter.You should change shaft bearing and is good to go."

    Owner bought it out of water,so the behaviour while it is in water is not known

    I measured compression:

    PTO 140psi
    Magneto 145 psi

    First thing that flashes on my mind "15 minutes on hose"...seems like something overheats and only concern that it is not the crankshaft bearings because i want to buy it for a spare engine.

    I will wait for reply from more experienced members

  2. #2
    sdlvx's Avatar
    Join Date
    Aug 2007
    You aren't supposed to run them on the hose for that long, the water in the jet pump is meant to cool the drive shaft and coupler. The oil seals are probably completely shot.

  3. #3
    DavidH's Avatar
    Join Date
    Aug 2021
    Central TX
    I'm rebuilding my 2001 gpr 1200, and in the 20 years I've owned it I doubt ive ran it for 15 minutes total on the hose. Maybe 20 but I bet not. TOTAL. You should never run it on the hose for more than 2 minutes at a time.

  4. #4
    Myself's Avatar
    Join Date
    May 2007
    North Central Arkansas
    The midshaft and pump shaft bearings are sealed units with grease. They can run a LONG LONG time at idle on the hose without hurting anything or getting hot. That being sure sounds like a bearing somewhere is shot and binding up.

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