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Underdog


Joined: Oct 18, 2008
Points: 332

Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Original Message   May 16, 2011 5:49 pm
Is there something (a part maybe?) missing from the Kohler 8hp horizontal shaft engine?  This BCS tiller always starts on the second pull (even when stored all winter) and it ran for me for a few days but today it started 3 or three times and ran fine but then this last time it would not start. Its not getting gas. I pulled the air breather cover off to take a look at the carb and noticed two shiny fittings that I don't remember seeing (they could have been there before/ i forget things) but  I'm wondering what they are and if they need to be attached to something. This BCS is out in the middle of a field and its a long long push home (in the rain)  if I cannot get it started.  I pulled the spark plug and its bone dry in there.
This message was modified May 16, 2011 by Underdog


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borat


Joined: Nov 10, 2007
Points: 2692

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #1   May 16, 2011 9:51 pm
Don't know what those two fittings are for but from the pics, it looks like fuel line is properly connected.  Pull the float bowl off to see if you're getting fuel to it.  If it's empty, check the fuel system from the tank on down to the carb.  If it's clear, the float needle is probably stick.  Time to clean the carb.
friiy


Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #2   May 16, 2011 11:26 pm
It looks to me to be a fuel pump,  maybe someone disconnected it years ago (from leaking)... They put a pump on the unit to allow the tanks lowest spot to be below the carb...

Without the pump hooked up, the fuel will only flow till the tank level reaches the height of the carb inlet....(I bet you have Half a tank left ...Right?)

Try filling the tank up all the way and see if it starts..

Good Luck,

Friiy

This message was modified May 16, 2011 by friiy
friiy


Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #3   May 16, 2011 11:29 pm
Take more pics,   Let us have the model number..  Get your wife to take a picture of you pushing the tiller in the rain... 

Good Luck,

Friiy

friiy


Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #4   May 16, 2011 11:56 pm
Ta-Da! fuel pump!
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #5   May 17, 2011 7:21 am
 Well, yes there is only half a tank of fuel left.  And when i pull the plug to look in the combustion chamber it is dry as a bone.

 I have replaced faulty fuel pumps before on other equipment. There's not that much too it. Why would they have just abandoned this one?  

We had 3 inches of rain last night and that tiller is sitting way out there.  Up to its belly in a pile of wet manure that I was tilling under. I snapped the starter cord from pulling it so many times.  Wish I owned a pair of muck boots. My shoes make a slurping sound when they sink into the manure. I may just leave it there with a tarp. The rain is supposed to stop Sunday. That should give me time to find a starter cord.   

Thanks for this info, this is my first Kohler.

This message was modified May 17, 2011 by Underdog


friiy


Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #6   May 17, 2011 12:47 pm
The fuel pump from Kohler is about 80 bucks.. It is always cheaper to keep the tank full on a job and bypass the pump... Sometimes the fuel pump leaks, someimes it leaks into the engine case and spills oil/gas all over your floor. The Kohler 8hp is a great engine, MAybe you can just buy the guts for it (diaphram/gasket). Someone may make the part now (aftermarket). When you buy the rope, be sure you get good rope from a lawn shop, Get a really tight small braid. I Think the size of rope you need is #6 or #6 1/2.. The think you also need about 6 feet length.... Is this iller he one that had the ACME engine on it? Good Luck, Friiy
Dr_Woof


Don't blow into the wind, and don't eat yellow snow. WOOF!

Location: Saskatchewan
Joined: Dec 13, 2010
Points: 253

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #7   May 17, 2011 11:40 pm
Pull off the carb, flush everything with carb cleaner, blow it out with compressed air.

Underdog


Joined: Oct 18, 2008
Points: 332

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #8   May 18, 2011 5:20 am
friiy wrote:
. I Think the size of rope you need is #6 or #6 1/2.. The think you also need about 6 feet length.... Is this iller he one that had the ACME engine on it? Good Luck, Friiy


Yes, I measured it.  3/16th" (#6) by 6 feet.  Kohler does not offer a rebuild kit (diaphram) for this pump. I'm not sure if it is a mikuni or not (there are diaphrams fo those).



friiy


Location: Las Vegas, The Desert
Joined: Apr 12, 2008
Points: 600

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #9   May 18, 2011 11:45 am
http://www.nitrolawnmower.com/nitro_lawnmower_026.htm Try these guys
Underdog


Joined: Oct 18, 2008
Points: 332

Re: Kohler magnum 8hp on this BCS tiller is not starting (started easily 2-3 times earlier in the day)
Reply #10   May 18, 2011 10:28 pm
friiy wrote:
http://www.nitrolawnmower.com/nitro_lawnmower_026.htm Try these guys

I will give them a call. thanks

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