CV730s Kohlar Not Cranking


Old 09-14-19, 05:50 PM
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CV730s Kohlar Not Cranking

I recently purchased a craftsman gt5000 with a CV730S motor and from what I've been told it sat for a few years. I don't know much about riding mowers but I got this one running with a new battery, carb, fuel pump, and filter. It ran decent for a little while until it started to surge so I then replaced the spark plugs. It ran, still surging, for a while until when I cut it off to put more more gas in it and now it won't start at all, nothing. I don't know if it won't because its warmed up or something else. I checked the battery and oil, they are both good.
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Old 09-15-19, 06:21 AM
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I suspect the carburetor is clogged. I would remove it. Disassemble and clean.

The fuel tank and fuel lines probably had varnish build up from old gas left in the machine. Even with new gas the vibration of running can knock some varnish bits loose which can clog a orifice or passage in the carburetor.
Old 09-15-19, 07:09 AM
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I would stick some Sea Foam in it and repost the problem in Small Engines.
Old 09-15-19, 07:31 AM
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If you went with cheap aftermarket carb, they tend to break right away. Speaking from experience.

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