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Abby’s Guide > Outdoor Power Equipment (Lawn Mowers, Snow Blowers, Chain Saws and more) > Discussions > Honda HS621 stalls AFTER warmup

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xjmllc


Joined: Feb 19, 2014
Points: 1

Honda HS621 stalls AFTER warmup
Original Message   Feb 19, 2014 12:49 pm
I have an early HS621. I JUST had it serviced, new fuel lines, tune, paddles, etc. It always starts right up with the first pull and full choke. The problems starts AFTER it warms up. I can use it for about 10 mins then it just stutters and cuts out, regardless of where the choke is. It will start right back up on full choke, then die again in about 15-30 seconds. If I leave it for a few hours (engine cools?) i can then run it again for another 10 mins before it starts acting up again. HELP!!! thanks, xjmllc first post.
Replies: 1 - 3 of 3View as Outline
Shryp


Location: Cleveland, OH
Joined: Jul 26, 2010
Points: 532

Re: Honda HS621 stalls AFTER warmup
Reply #1   Feb 19, 2014 3:25 pm
Try loosening the fuel cap. You could have a blocked vent creating a vacuum and starving it for fuel.
niper99


Location: London Ont
Joined: Dec 2, 2007
Points: 354

Re: Honda HS621 stalls AFTER warmup
Reply #2   Feb 19, 2014 3:34 pm
could have a vapour lock (fuel cap not venting proberely)... I would also check the needle and seat for sticking or improper install.. any backfiring??.. if yes? getting the valve clearances checked wouldn't hurt..

first thing I would do is start it up.. loosen gas cap and see if it stalls.. if it doesn't then replace fuel cap..
Paul7


Joined: Mar 12, 2007
Points: 452

Re: Honda HS621 stalls AFTER warmup
Reply #3   Feb 19, 2014 11:45 pm
Since it happened RIGHT after being serviced I'd look at the carb for something not reinstalled correctly. I once installed the carb bowl facing the wrong way and it didn't allow enough room for the float to move. Probably something simple...
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