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Classic 450 series Model 90000 will not stop.

Lawn mower starts OK. Will not stop after half an hours use. Have to run it into something solid before it shudders to a stop. Can't do the motor any good. Is it carburretor or ?

Posted by Anonymous on


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Posted on Jan 02, 2017

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SOURCE: Lawn mower will not start and run

Sounds like a clogged carb or a cracked primer bulb. I would install a carb rebuild kit and new primer bulb if your mower uses one.

Posted on May 31, 2009

  • 2 Answers

SOURCE: Sovereign SLM 1500 lawn mower blades have stopped turning

The belts are available part number is SV150. Call ALM Manufacturing 01423 797208 for advice/stockists.

Posted on Jun 29, 2009

  • 74 Answers

SOURCE: lawn mower runs well from cold but if stopped won't start

Sounds like it's running rich. If the mixture is slightly rich it will start well when cold, but when hot it floods. Check the air cleaner to be sure it's not clogged/blocked. Get a new plug for it and if this happens again just install the new plug - the new plug won't be fouled with fuel. If it started with the new plug then you're on your way to a carb adjustment (that is if the air filter/cleaner is clean)

Posted on Aug 29, 2009

  • 389 Answers

SOURCE: lawn mower not quite starting

Sounds like you have dirt and/or moisture in the carburetor float bowl. Remove the bowl and clean it out. place a small pan or bowl under it when you start to remove it to catch the fuel and look for water. It will look like a "bubble" floating at the bottom of the fuel. Get a can of areosol carburetor cleaner with a long tube on it, stick the tube up in the hole where the bowl nut goes and spray it out to remove and fine dirt that may be in there. The following is in CAPS because I cannot stress enough, the safety and hazards of using the carb cleaner:

Posted on Sep 15, 2009

  • 203 Answers

SOURCE: I have a LT 1024

There should be 3 safety switches on the mower. 1 will be under the seat, causing the engine to die if you were to fall off the machine while in gear. 1 is in the transmission to be sure the machine is in neutral when you go to start it, and one will be on the blades to insure they are not engaged when you go to start it. You will not want to bypass this switch, rather get it replaced as it is very important that this safety feature is working should you slip off the seat or accidentally get off the machine when it's in gear.

Posted on Feb 17, 2010

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I have same mower and just fixed what seems like a similar problem description. I had gone down the fuel system route and the symptoms just didn't add up. Stopped abruptly w/o sputtering once I reached warm-up temp. Replaced the solid state ignition (34443C now part number 3444D). Problem corrected and just mowed my 1/3rd acre w/ no issues.

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