Fan - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum
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post #1 of 14 (permalink) Old 08-19-2019, 09:20 AM Thread Starter
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Fan

I just bought a 2002 foreman 450
I have only driven it around the yard a few times so far.
I noticed that the fan has not kicked on yet.
Is the fan supposed to run pretty regular or only in extreme use/heat?
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post #2 of 14 (permalink) Old 08-19-2019, 12:36 PM
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You don't say where you're at but I'm in Texas and mine runs about 20 minutes before it even thinks about coming on. You may want to borrow a thermal temp reading gun or buy a cheap one from Harbor Freight. Let it sit and idle and keep an eye on it, I don't know the temp that kicks it on, have read it here before but can't recall so I won't guess but it's on the forums here somewhere if you do a search.
There's a service manual link in my signature below if you want a manual, it shows you how to check it.

2007 Foreman 500FM
2014 Foreman 500FM
Service Manuals Link: https://drive.google.com/drive/folde...7LP-eZp2jMRVJU
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post #3 of 14 (permalink) Old 08-19-2019, 12:45 PM
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the fan will NOT come on until the motor oil hits a certain temp, if you wish, you can BUY a service manual and or find a FREE Download one and in it will tell you what exact temp is needed to make it come on and it will also tel you how to TEST the fan to make sure it works properly!\
NEW to YOU atv's, the BEST thing you can do is do a full set of service PM's
that means change all fluids, so you know there all good and fresh, motor oil.filter, diff's, make sure air filter is clean and oiled if the type!
you also didn;t mention how many miles or hours on motor, and this IMO matters at times when asking for help or questions on things, more we know, better advice/help we can get you!
Congrats to you on the new to you atv as well, 450's are good atv's! and welcome to the site!
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post #4 of 14 (permalink) Old 08-19-2019, 03:40 PM Thread Starter
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Thank you.
I have already changed the engine oil and front and rear diff fluids.
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post #5 of 14 (permalink) Old 08-19-2019, 05:42 PM
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wet clutch approved oil RIGHT?
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post #6 of 14 (permalink) Old 08-19-2019, 10:02 PM
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I’ve found the 450s run pretty hot. One thing I did and recommend to anyone else to do is heat wrap your exhaust all the way to the muffler. It keeps heat off my leg and off the motor, also made the exhaust quieter as well 👍🏻
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post #7 of 14 (permalink) Old 09-25-2019, 04:53 PM
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Have mentioned this before on another forum . . . will mention it here also.
Some folks have a manual 'override' on their fan circuit. The reason for this is that the oil has to get extremely hot before the fan will come on. If, for some reason, a component in the 'stock' system has failed and you are unaware of the failure, you risk motor damage. Why trust a factory component that has a history of failure . . .
You can have a toggle switch and indicator visible to the rider . . . . and run it hot off the battery, or through the 'key-on' ignition. It's nice to switch the fan on before your quad gets hot. Hot oil breaks down faster . . . . enjoy your quad rspence !
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'We may be lost, but we're making good time'

'99 450S Foreman .... yellow
'99 450ES Foreman ... red
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post #8 of 14 (permalink) Old 09-26-2019, 07:42 AM
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I have two 450s , both have toggle switches to over ride the fan controllers , both have the coolers relocated and both have double stacked coolers , one has a second fan blowing on the engine with no cooler ------ so having the cooler on the front rack allows me to reach out and touch the inlet hose of the coolers easily while driving , this really showed me just how important the cooler and fans are , it takes about 15 minutes for the oil to get hot with out the fan on , when I turn the fan on the cooler it cools down very quickly , I'd say a couple of minutes and the temp is way down , the fan blowing on the engine without a cooler doesn't do much , I usually will turn that fan on after I stop the engine from a hard run ---- before I relocated the coolers I got 3rd degree burns on my leg from riding with short pants , hitting the water and having steam hit my leg , the engine doesn't steam up no more with relocated coolers , you need to keep that cooler clean from dirt build up and it is hard to do while under the atv ---- I was going to post a pic but it appears I have limited out on my allotted picture space
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post #9 of 14 (permalink) Old 09-26-2019, 11:55 AM
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These 450's can get hot. Good to see you here Fishfiles !
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'We may be lost, but we're making good time'

'99 450S Foreman .... yellow
'99 450ES Foreman ... red
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post #10 of 14 (permalink) Old 09-26-2019, 01:29 PM
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Hey Macarena Man. Good to see you.

2005 Foreman Rubicon Camo
Perfex, 27" Mudbugs
Heated grips and Thumb , HID's
5K Viper Max winch

2009 Foreman 500FM Green
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27" Execs on Rubicon rims
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2006 Foreman 500FM Green
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