Farm Equipment - Honda 450 Foreman quad question

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Honda 450 Foreman quad question

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=200763
Printed Date: 21 Mar 2026 at 7:40pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: Honda 450 Foreman quad question

Posted By: Ben (MI)
Subject: Honda 450 Foreman quad question
Date Posted: 07 Apr 2024 at 11:19am

Howdy,my new to me quad will leak gas out of the carburetor overflow tube when I park it for the day if I don't let it run out of gas after turning off the fuel shut off. Assume there is gunk in the float, carb repair is above my abilities. I'm running a heavy dose of Seafoam thru it.It starts and runs perfectly.There's not a line from the overflow tube to get the gas to the ground so if it does overflow it drips on the engine. I am going to put a line on it. My question is, the parts diagram shows a one way valve in line on the overflow tube. What does this valve do, keep water out if you are puddle jumping? Thanks for reading!

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Part time farming with a 1980 7060 and 1984 F3 hydro.

Replies:

Posted By: steve(ill)
Date Posted: 07 Apr 2024 at 12:47pm

valve is not necessary.. but yes, it prevents water, bugs, dust from going UP into the carb.... You dont have it now, so adding a foot of drain hose does not change anything.

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Like them all, but love the "B"s.

Posted By: Ben (MI)
Date Posted: 07 Apr 2024 at 12:48pm

Thank you Steve

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Part time farming with a 1980 7060 and 1984 F3 hydro.

Posted By: Vaterlemon
Date Posted: 28 Jan 2026 at 8:06am

Sounds like the float needle is sticking or the float height is off. I’ve had the same thing happen, and a simple carb clean plus a new float needle sorted it. I’ve also had good luck using https://www.coxmotorparts.co.uk/honda-shop/honda-oils-fluids/" rel="nofollow - genuine honda parts for little things like that, since the cheap needles didn’t seal right. Also worth checking that the petcock shuts off fully so the bowl isn’t being overfed while it sits.

Posted By: HudCo
Date Posted: 28 Jan 2026 at 10:26pm

repairing that carb is pretty easy getting it in and out is the hardest my one honda leaks once in awhile but i allways turn the gas off when i park for the day

Posted By: rw
Date Posted: 31 Jan 2026 at 6:10am

Its been several years now, but The carb failed on my Honda 300. The brand new oem replacement was available online and priced so to make more sense than repair at that time. We used ours everyday feeding cows.

That same 300 is giving me fits finding tires like the oem ones.