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Discussion in 'Wright Manufacturing, Inc. (Archived)' started by ukcats, Jul 25, 2013.

  1. ukcats

    ukcats LawnSite Member
    Messages: 158

    ok i have a older sentar, it runs good but when I shut it off and try to restart it does not want to fire over. Why do i need to look for? new plugs new igniton coil and rebuilt the carb
  2. ArtLikeLandscapes

    ArtLikeLandscapes LawnSite Member
    Messages: 115

    I have to choke mine almost every time I go to restart it. I also have to hold pressure on the parking brake switch between the pumps. I call it my security system. It works good because no one can start it but me.
  3. ukcats

    ukcats LawnSite Member
    Messages: 158

    seems like when motor gets warm then shut off its hard s heck to fire back up
  4. WrightCommercial

    WrightCommercial Inactive
    Messages: 526


    Is it an older dual fuel tank Sentar or a single fuel tank Sentar Sport? If the dual tank and old enough it doesn't have the starter interlock system like the Sentar Sports have between the pumps. A few things should be looked at as potential causes. Restriction in the fuel system (clogged filter), valve adjustment (should be checked every 300 hours), strength of spark when hot vs cold (old plugs, or coils getting hot), dirty air filter, debris under engine cowl causing coils to get too hot, choke out of adjustment.

    Best Regards
    Wright Mfg.
  5. ukcats

    ukcats LawnSite Member
    Messages: 158

    its the older sentar dual tanks. just replaced plugs, ignition coils, fuel filter and carb and had the valves adjusted. once I shut it off and try to restart is when it won't start uless it sits for 5 mins or so
  6. Cut It Close

    Cut It Close LawnSite Member
    from NJ
    Messages: 125

    Subscribing...I have the same problem with my 52" rapid height. Starts right up first thing then in between properties (5-10 mins) I go to start and it just keeps cranking... I choke it then it finally starts but it's real rough and backfiring. Then I'll put the blades on and it starts to stall out.
  7. Ormond32176

    Ormond32176 LawnSite Member
    Messages: 217

    Does it run fine for long periods? It could be a vapor lock or fuel tank not venting gasses until it cools off. Probably not it, but try cracking the fuel lid then restarting it.
  8. jsf343

    jsf343 LawnSite Bronze Member
    Messages: 1,786

    we had this issue this year as well and the mechanic finally (after taking it in numerous times) changed out the coil and gave it a valve adjustment and it ran sweet from then on. I would look into those two things.
  9. Patriot Services

    Patriot Services LawnSite Fanatic
    Messages: 14,347

    This is correct. Valve clearances are super critical in these engines. Everybody can't seem to find a good coil supplier. They all have way too short a lifespan for the money these days. Mowers should be like cars and go 1000 hours without anything besides oil changes.
  10. kawakx125

    kawakx125 LawnSite Bronze Member
    Messages: 1,130

    sounds like a pretty cut and dried case of valves out of adjustment to me

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