I have a Bobcat 751 with 1666 hours. My problem is this: While I am moving forward at about ½ throttle with or with a load the I heard a loud pop and the machine stops dead killing the motor or at less throttle it just stops and will not move. In order to get started again if it does not kill the engine is to shut off the engine, raise the bar then go through the normal start up process. Drop the bar, start the engine and push the release button. Sometimes I have to repeat the process a couple of times to get it to move again, It may be couple of minutes, a couple of hours or sometimes a couple days before it happens again. Is it my solenoid going bad or something more serious? Any suggestions are appreciated since I am new to the use of a Bobcat. I am using a tree shear with it clearing cedars.