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tractorman 
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Joined: 22 Sep 2009
Location: west central wi
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 Topic: SunStar engine Pulsing
Posted: 13 Feb 2017 at 8:18pm |
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I have a Sunstar with the kohler 2 cylinder engine, the engine wants to pulse , i mean the engine slows and then the governor opens up to speed it up. happens as soon as the engine warms a little. it coninues as long as the engine is running .what can i do to find and fix the problem ?
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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Jim Hancock
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Joined: 11 Sep 2009
Location: EL Reno, Ok.
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Posted: 13 Feb 2017 at 10:16pm |
Sounds like it's running a little lean. I'd open up the idle mixture some more. Also, add a very healthy dose of ChemTool B-12 to clean out the carb to be sure it's not a contributing factor.
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How blessed we are by HIS GRACE!
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dawntreader74
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Joined: 28 Oct 2013
Location: Manteno
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Posted: 13 Feb 2017 at 11:53pm |
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needs more fuel' had one do the same' not getting any gas.
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 15 Feb 2017 at 5:49pm |
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could a bad or leaking head gasket cause this type of problem ?
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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dawntreader74
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Location: Manteno
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Posted: 15 Feb 2017 at 8:11pm |
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some have a fuel pump' maybe the pump it blocked up' or bad.
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 16 Feb 2017 at 8:39am |
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new fuel pump, and working - tested .
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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Jim Hancock
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Location: EL Reno, Ok.
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Posted: 19 Feb 2017 at 7:00pm |
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Have you gotten to your engine & smoothed out yet?
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How blessed we are by HIS GRACE!
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 20 Feb 2017 at 8:22am |
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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Jim Hancock
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Location: EL Reno, Ok.
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Posted: 20 Feb 2017 at 3:03pm |
Have you opened up the fuel mixture screw a quarter turn and added a good dose of Chemtool B12 to your gas? I only asked since we hadn't heard back from you whether you got it running better or not. I'm also aware that you may have gotten busy with life and just hadn't got to it yet. So, I was just curious.
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How blessed we are by HIS GRACE!
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dawntreader74
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Location: Manteno
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Posted: 20 Feb 2017 at 5:17pm |
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he must have it fix'
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tractorman
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Location: west central wi
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Posted: 20 Feb 2017 at 6:30pm |
nope, haven't a fix yet. have tried opening the needle valve but no luck ther, chemtrol is next
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 23 Feb 2017 at 8:02am |
i done, tried all the helpful suggestions, no luck.
put on trailer and headed to a repair shop, trailer flat tire on way, after a trip home for replacement tire, it is now there. he only repairs no new sales . it may also be for sale soon, i'll post it if so .
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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dawntreader74
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Joined: 28 Oct 2013
Location: Manteno
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Posted: 28 Feb 2017 at 6:36pm |
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what was wrong with it'''
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Steve in NJ
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Joined: 12 Sep 2009
Location: Andover, NJ
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Posted: 28 Feb 2017 at 7:58pm |
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Sounds like dirt in the Carburetor causing a lean condition as Jim mentioned. That's usually what the problem is when they "hunt" like that....
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39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife
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dawntreader74
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Posted: 28 Feb 2017 at 9:49pm |
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yes' it's dirt' or a week pump' your right' young man.
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Jim Hancock
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Posted: 14 Mar 2017 at 1:13pm |
Have you found out what the issue was yet? Or, is it still at the repair shop?
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How blessed we are by HIS GRACE!
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dawntreader74
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Posted: 14 Mar 2017 at 7:37pm |
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mite of got MAD'' an sold it?
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tractorman
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Joined: 22 Sep 2009
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Posted: 15 Mar 2017 at 9:49am |
no not sold yet, still thinking about selling it. in the mean time i took it to a repair shop, the trip with it cost me a trailer tire and a tough time getting it fixed. was told aweek for diagnostics. when i git home the truck brakes went out so no truck now. and into 4th week with no estimate yet.
Selling sounds better all the time i'll keep you all posted .
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 17 Mar 2017 at 7:04pm |
Sunstar diagnosis the governer was off a just a little (me ? ) the plugs were gapped way too wide ( me ? ) still surges need to do the carb $150 deepening on whats found , told him to fix it . Truck/ a 93 chev blazer was towed in today 2 brake hoses and one brake line, no bill yet . trailer still needs tire replaced .
Sounds more like sell it , will continue when all is done
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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tractorman
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Joined: 22 Sep 2009
Location: west central wi
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Posted: 03 Apr 2017 at 9:10am |
one last update
Simplicity Sunstar up date its back and now runs good the mechanic adjusted out of sync governor, reset the incorrect gap on the plugs cleaned and set the carb , thanks to him. only mishap as a dead battery in my truck had to jump start it to get home. now the question will it be for sale ? i have 5 other mowers including one out on loan, 3 that run and one pieces in rebuilding one of which is brand new . I could use the space in the shop .
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Play on 38 B 49 WF , working on D14, D15 B10, Bee 12 B110. use 185 and 190
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Jim Hancock
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Joined: 11 Sep 2009
Location: EL Reno, Ok.
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Posted: 05 Apr 2017 at 11:53pm |
Glad to hear the good news that it's back to running smooth again! 
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How blessed we are by HIS GRACE!
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