The Jack's Small Engines Forum - Join Our Online Community
Reply to post

Wont stay running

Author
tatersquad
Starting Member
  • Total Posts : 6
  • Scores: 0
  • Reward points: 0
  • Joined: 2017/10/15 19:01:49
  • Status: offline
2017/10/15 19:10:26 (permalink)
0

Wont stay running

I have a B&S 441777-0116-E1 23HP on a ridding lawn mower Snapper NXT that will not stay running. It runs for 5-10 min and shuts off, able to start it right back up and get another 5-10 min out of it. I installed new battery to get it running but I noticed that it is also slow to charge, only getting 5 VAC out of the alternator (not sure what its supposed to be). 

12 Replies Related Threads

    AVB
    Super Member
    • Total Posts : 152
    • Scores: 10
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: offline
    Re: Wont stay running 2017/10/15 20:45:12 (permalink)
    0
    First we must determine which of three possible alternator (stator) setups you have.
    Wilber
    Starting Member
    • Total Posts : 11
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/07/14 23:10:30
    • Location: Maine, usa
    • Status: offline
    Re: Wont stay running 2017/10/15 21:34:34 (permalink)
    0
    Sounds like the fuel vent is plugged, resulting in a vacuum. Equalizes quickly once the engine shuts off. Run without the fuel cap (or very loose anyway) to prove or disprove.
    tatersquad
    Starting Member
    • Total Posts : 6
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/10/15 19:01:49
    • Status: offline
    Re: Wont stay running 2017/10/15 21:40:23 (permalink)
    0
    AVB...from what I gather it is a 696458 but not sure if it is a 10, 13, or 16 amp. I am not sure how to tell the difference.
     
    Wilber... I will give that a try tomorrow.
    post edited by tatersquad - 2017/10/15 21:43:53
    tatersquad
    Starting Member
    • Total Posts : 6
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/10/15 19:01:49
    • Status: offline
    Re: Wont stay running 2017/10/16 19:52:09 (permalink)
    0
    It wasn't the fuel cap.
    AVB
    Super Member
    • Total Posts : 152
    • Scores: 10
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: offline
    Re: Wont stay running 2017/10/17 05:35:06 (permalink)
    0
    tatersquad
    AVB...from what I gather it is a 696458 but not sure if it is a 10, 13, or 16 amp. I am not sure how to tell the difference.
     
    Wilber... I will give that a try tomorrow.




    Amperage controlled the size of the magnets using this stator; otherwords, the same stator can be have either one of the three max out amperage just by using different flywheel magnets.
     
    Test specs
    • 10 amp stator setup 20 vac @ 3600 rpm
    • 13 amp stator setup 20 vac @ 3600 rpm
    • 16 amp stator setup 30 vac @ 3600 rpm.
    tatersquad
    Starting Member
    • Total Posts : 6
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/10/15 19:01:49
    • Status: offline
    Re: Wont stay running 2017/10/17 07:29:35 (permalink)
    0
    Tested it again and still only getting 5.3-6.1 VAC. There is nothing clearly telling me what setup I have so I am going to take the fly wheel off and measure the magnets, not sure when I am going to get to that but I hope soon.
    AVB
    Super Member
    • Total Posts : 152
    • Scores: 10
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: offline
    Re: Wont stay running 2017/10/17 08:17:08 (permalink)
    0
    Use the following stator Id chart. Doesn't cover all possible engine setups but is still a good guide for identification.
     
    https://drive.google.com/open?id=0B-g4TpKUJnh7Y1dlNF95cGNUeTg
     
    post edited by AVB - 2017/10/17 08:20:57
    tatersquad
    Starting Member
    • Total Posts : 6
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/10/15 19:01:49
    • Status: offline
    Re: Wont stay running 2017/10/17 21:10:25 (permalink)
    0
    I pulled the stator today and it was fried. Thanks for the chart, it helped out because I was able to get the size of the magnets and order the correct size stator. As soon as I get a new one in I plan on working on it shutting off and will let you know.
    tatersquad
    Starting Member
    • Total Posts : 6
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/10/15 19:01:49
    • Status: offline
    Re: Wont stay running 2017/10/26 07:35:45 (permalink)
    0
    I have installed a new stator and now it charges.

    Next step is the shutting down issue. It runs for about 5 min then shuts down. There is fuel flow from the pump when I crank it and sometimes it is hard to start. Any suggestions?
    AVB
    Super Member
    • Total Posts : 152
    • Scores: 10
    • Reward points: 0
    • Joined: 2017/06/21 16:35:48
    • Location: Elora, TN
    • Status: offline
    Re: Wont stay running 2017/10/26 10:56:06 (permalink)
    0
    First install a known good spark plug, new doesn't mean good all the time. Next I would check for spark when it shuts down. I am leaning toward a failing coil but it still could a fuel issue as I have seen some crazy fuel related problems.
     
    With problems you just have to use your wits and experience as they can driving you nuts at times as intermittent problems are some of the hardest to fix.
    warren90anthony
    Starting Member
    • Total Posts : 14
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/11/10 05:39:29
    • Status: offline
    Re: Wont stay running 2017/11/10 05:57:33 (permalink)
    0
    No,First you must determine which of three possible alternator  pump (stator) setups you have and re assemble the dropper with it .
    Cmh3574
    Starting Member
    • Total Posts : 7
    • Scores: 0
    • Reward points: 0
    • Joined: 2017/11/10 06:47:00
    • Status: offline
    Re: Wont stay running 2017/11/10 06:55:38 (permalink)
    0
    Sounds like crack point had a mower do that replaced the point seemed ok may wanna relace the gasket to cover is very vlose and caused me miner issue after i tightned it so replaced the gasket with one a little thicker
    Jump to:
    Copyright © 1994 - 2016 Jacks Small Engine & Generator Service, LLC