yamaha xl800 has only 40 hourspistons are moving up and down freely when i hand crank the engine from impeller.. but only in the opposite direction its supposed to go .. can only get one turn in correct direction and it locks when pistons are at the highest point and lowest point ..it was cranking fine but i had to change the ware ring as impeller was sticking but now i have above problem even with impeller casing removed any ideas on what could be wrong as it was cranking fine the past few weeks??
i am thinking water in the crankcase could be a possiblity .. is this a possible cause ? there was water in the cyliners previously but i blew it out through cranking .. how can i remove water from the crank case ?
Another post with similar problem reminded me that you could have lost a powervalve. http://www.pwcforum.com/yamaha-jetsk...xlt-800-a.html They sometimes fall loose unless you had clips installed. If they fall into a cylinder, then you get the same symptoms of it not being able to turn completely.
The bendix on the starter will not prevent rotation either way.
2008 Yamaha FX HO Cruiser
2010 Hurricane Sundeck 2100