Yam 60, 4 stroke difficulty cold starting

[roy w. shakun]

I have 50 hours on the motor, runs fine once started, when warm, it starts easily, and idles perfectly once started. ( It's getting it started! ) Tachs out @ 5500 rpm. The motor is carbed. This problem has been getting worse, little by little<br /><br />The fuel lines are clear and free of any interuptions.<br /><br />I just changed the oil.<br /><br />Plugs look ok.<br /><br />I had to crank it 7 or 8 times to get it going today. Don't like beating on the starter.<br /><br />Yes, i squeezed the ball, and a second time ( and i checked that fuel flows freely from it, with no effort, previously )<br /><br />Fuel is fresh 87 octane, with a maintence level of ring free.<br /><br />The last interesting one, and maybe of importance, when running the motor on the garden hose it will start on the second or third try when cold. ( no strain from the impeller )<br /><br />?????

 

[roy w. shakun]

Re: Yam 60, 4 stroke difficulty cold starting

Someone please help, my dealer is backed up at least 2 weeks. And that is just to look at it!<br /><br />thanx

 

[russthemuss]

Re: Yam 60, 4 stroke difficulty cold starting

Hi Roy ,maybe its the battery.Starts easier after running cause the battery has got a top up charge.Is it cold where your from? Battery wont perform as well first thing on a cold morning.<br />just some guesses!

 

[roy w. shakun]

Re: Yam 60, 4 stroke difficulty cold starting

I got a live one.<br /><br />OK, checked the battey, cca are above reccommended for the motor, as are the mca.<br /><br />I put the battery on my charger, and it went right to a trickle charge. ( full )<br /><br />I have dual batt's, and the same was true for the other.<br /><br />I have even tried starting it with both, lot's of amps,,,,,,<br /><br />While running i pulled one of each of the spark plug leads, each one slowed down ther rpm's the same, so i seem to be hitting on all 4 cylinders.<br />( on the garden hose of course, in my back yard )<br /><br />so, ??? it's summer time, nice and warm, ok 80,,,

 

[russthemuss]

Re: Yam 60, 4 stroke difficulty cold starting

Is it taking longer to 'catch' or you just cranking it for longer each time. ie 7-8 times to catch? or 7-8 revolutions? Dosn't sound to extreme 2 me, maybe you should change the plugs,process of elimination!

 

[torxdrive]

Re: Yam 60, 4 stroke difficulty cold starting

ccheck the choke to see if the are closeing up tite

 

[roy w. shakun]

Re: Yam 60, 4 stroke difficulty cold starting

where is the choke on this 4 stroke?<br /><br />i'll change the plugs, to be sure<br /><br />evrything is teched out,<br /><br />i don't mean cranking 7 times over, i mean 7 or 8 3 to 5 second intervals, fast.<br /><br />manual says no more than 5 seconds