M16 carb kit?

[drewd 55]

Hello,  I have an 1987 416-8 with a Kohler Magnum M16.  The M16 has a Walbro carb.  The engine decal with specs, etc., is there but the writing is totally gone.  This is the WH I have been fixing up and have it running (and mowing) pretty good.  However after 30 to 45 minutes it begins to run a bit rough and sounds like it want to quite. Shutting down the mower seemed to help and I got it back to the shed before it got any worse  Thinking the carb could use a cleaning..Are there rebuild kits available for the carb?  Also, could other issues cause this?  Thanks!

[gwest_ca-(File Mod) 10,491]

Click on the fuzzy picture.

On the page that opens are 5 more pictures.

Click on them to see one that has your engine numbers listed.

Garry

[kasey54 304]

A plugged vent in fuel cap ( loosen cap to test)

[kasey54 304]

Applying choke when it starts to quit may help determine if its fuel or ignition caused problem.

[drewd 55]

Thanks for the  link and the tips!    I'll give them a try.

[richmondred01 2,205]

Yes the carb kits are available.

I recommend spending the extra 5-7 bucks and get the Kohler kit.

 

[drewd 55]

Hi All,

 

I bought Kohler rebuild kit # 25 757 11-S.  I had a couple of questions as there are extra parts than this Walbro WHG takes (two float needles and gaskets not used on this carb). 

• It came with two intake valves (one with a spring).  I used the one without spring that looked like the one I took out.  However the float pin was not in the kit, just the needle.  Is this what others have found?
• Also, there was the thick gasket to go against the block and a regular thinner one of the same size.  I used them both as the diagram showed both (thick one against block and thinner one between thick one and carb).  Is this correct?   
•  The manual I downloaded for the M16 shows a Kohler carb and initial setting for both fuel needles at 2 1/2 turns out.  Is that the same for this Walbro?
• Also I cleaned everything I could without removing the Welch plugs.  
• I am asking as it is running much worse than before I cleaned it!!  Total surprise as I have rebuilt several other carbs in the past and never had that happen.  I am hoping that the new float needle is stuck and/or the thin wire I used on the main jet was short and did not get everything?  It was dirty and needed a good cleaning so surprised at the poor performance once cleaned.  Any suggestions?

Thanks!