Side mounted fire starter. Red Hot exhaust
- Thread starter Goose1776
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m5040
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My PT180 does the same thing without full throttle. Think of the funny cars at the dragway with the open header single exhaust and you see fire coming out of each pipe.
ponytug
Super Member
I don't have a 425, but this has been a long standing issue. I would through the older threads, if you want to see more examples, and causes/solutions. One user posted a cut open muffler, which may give you some insights.
Overheated Robin EH72-FI (28 hp) in PT-425 solved
www.tractorbynet.com
In my completely inexperienced couch potato eyes, it looks to me like the muffler is too restrictive. Several users have put on different headers and mufflers and the problem has gone away.
I would also observe that slight differences in fuel/air ratios, timing, and octane levels can have a big impact on secondary combustion in exhaust headers and mufflers.
All the best,
Peter
Overheated Robin EH72-FI (28 hp) in PT-425 solved
2003 PT-425 - change to Kohler Muffler?
Long time no chat old friends! I'm looking at changing out the muffler on my 2003 PT-425. Reason is that I believe that the PT-built-muffler tends to hold a lot of heat in the engine. Pretty-sure that MossRoad has noted that his Kohler, which has the stock Kohler muffler, doesn't seem to...
www.tractorbynet.com
In my completely inexperienced couch potato eyes, it looks to me like the muffler is too restrictive. Several users have put on different headers and mufflers and the problem has gone away.
I would also observe that slight differences in fuel/air ratios, timing, and octane levels can have a big impact on secondary combustion in exhaust headers and mufflers.
All the best,
Peter
agjones
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There's also excess heat in the tub. I added a fan (like the cooler fan) to the side. Helps.
I will probably end up doing that as well
CalG
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Playing around with ignition timing would be worth the effort.
If these solid state ignition systems didn't make it so difficult.
Just getting to the points on the K582 is an exercise in sheet metal handling.
If these solid state ignition systems didn't make it so difficult.
Just getting to the points on the K582 is an exercise in sheet metal handling.
PILOON
Super Star Member
You might note that many chain saws incorporate spark arresters since apparently they are a source of fire starters.
Could be California missed including some categories of engine powered equipment.
Could be California missed including some categories of engine powered equipment.
joshlee
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Wow! That is some picture! I would show it to Terry at Power Trac and see what he says.
K5lwq
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I suspect a timing issue. But if they told me that was normal I would be getting something else. I also can not imagine any manufacturers that would want the liability associated with that situation.