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MarksA-C

6518 Running Hot

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MarksA-C
I drove my 6518 about 3 blocks to go mow my friends back yard. After I was done with the drive and mowing, I shut it down and turned off the fuel valve. Lots of Heat! I could feel it coming off the hood. Do 2 cylinder engine get much warmer than single cyliners? This is my first 2 cyliner engine, so Its new to me. Is there a way I can keep it cooler? Maybe a small fan to mount in the grill?

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Roy
Mark, Don't know about the vertical twins but the Kohler Command V-twin, 18 hp in my new Sovereign makes a lot more heat than the old one cylinder CI Briggs engines.

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RedbarnRick
Mark, the original engine was an opposed twin and all the venting on the hood was intended to relieve the heat buildup, do you have all the shields on the engine back in place? grass clippings will get to the fins and cause it to overheat.

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MarksA-C
Its all clear, all the tins are in place and nothing is stuck in the fins. Just to ask, does anyone know what kind of smaller fan I can use to mount into the grill? Thank You

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shanhamm
Mark, if you make it up to northern tool in Menominee Falls, I'm sure you can find a 12volt cooling fan there for very cheap. I have not been there in a few years so I'm not sure what there inventory is now days. (They are right on the corner of Pilgram road, and Hwy 175, Appleton Ave) It won't hurt to mount one in the grill, put a switch in the dash and turn it on as you feel needed.

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toomanytractors
Hi Mark: My favorite trick for cooling down any air cooled engine is to let the engine run at about one third throttle for 3 or 4 minutes before shutting it off. As long as the fins are clean and the blower system is clear this should significantly reduce the amount of heat generated. I have a Kohler 17hp twin on a 917 Allis and a Sovereign with an 18hp V twin Kohler and both seem to produce more heat than the single cylinder engines. This should stand to reason because of twice as many cylinders. Hopes this helps. Dave

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