Kawasaki XP Series 15 HP engine


Old 09-03-09, 05:31 PM
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Join Date: Sep 2009
Location: New Hampshire
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Kawasaki XP Series 15 HP engine

I have a Husqvarna YTH 1542xp Lawn Tractor, about 9 years old. It has about 126 hours on the Kawasaki XP Series 15 HP engine. When new it ran fine at all speeds. A few years ago the engine developed a surging when at idle. Over time the surging has progressed to moderate engine speeds. It smooths out if I pull the choke out some. It runs ok at high speed.

I removed the air filter to get a look at the carb and linkage. There are no conspicuous adjustments on the carb. The engine runs very poor with the air cleaner off. The air cleaner filter appears clean. I replaced it at 69 hours. At that time the new filter made no difference in the surging.

I store the tractor with Sta-Bil in the fuel.
Is it safe to put a fuel additive in the gas to try cleaning the carb?
I've never replaced the fuel filter because the problem does not occur at high speeds.

Any ideas? Thank you, Peter
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Old 09-03-09, 07:28 PM
Join Date: May 2006
Location: Iowa!!!!!
Posts: 3,728
Change the filter anyway - it's overdue.

Put Sea Foam in it. You can get that from an auto parts store.
Old 09-04-09, 12:12 AM
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Location: USA
Posts: 16,813
You can try an additive but you will likely need to remove and clean out the carb.

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