how do you start a 2 stroke johnson?

[matridium]

I know this may sound really dumb, however I realy need to know if I am doing this right. When I go to start my johnson 25R73 it is hit or miss. I can crank on the rip cord once or twice and it will turn over and run, however sometimes it takes many cranks before it will turn over. The sequence of how I have been starting is this: First prime the fuel bulb. secound put the throtle on the start position. Then third pull the rip cord. Is this wrong? I was told by my friend I need to open the choke about half way then after it is started open the choke full is this true? what is a manual choke for? I have one but I have no clue as to it's function. Also I was wondering when the cam follower is in the position to open the throtle valve dose it also move the choke? is the choke ever moved automatic by the throtle linkage? or does it just move when you move it with the throtle contol?<br /><br />thank you <br />Michael Moore

 

[Xcusme]

Re: how do you start a 2 stroke johnson?

Mike,<br />The choke on your motor , does just that, it chokes off most of the air to your motor. When choked, the motor draws more fuel from the carb. This overly rich mixture aids in the starting of the motor. No, the throttle position has no effect on the position of your manual choke, they both work independently. <br />Starting procedure:<br />Pump fuel line primer bulb until firm. This pumps fuel past the fuel pump into the carb bowl.<br />Twist throttle control to Start position<br />Pull choke knob out ( this closes the choke butterfly and chokes carb= more initial fuel to motor)<br />Pull recoil starter<br />When motor starts, you may have to push in slightly on choke knob (this opens the choke butterfly) to keep motor running.<br />You may have to turn throttle , more or less, to maintain a steady idle.<br />As motor warms, push choke knob in a bit (un-chokes motor)<br />When motor is running and warmed up, the choke knob should be pushed fully in. (choke butterfly will be horizontal= open choke).<br />Every motor is slightly different in that some need a bit more or less choke to cold start. Subsequent starts when warm, usually don't need to be choked if properly tuned.

 

[matridium]

Re: how do you start a 2 stroke johnson?

perfect. thank you! you explained it well and now I understand.