[jd_430]

I'm helping my neighbor with his L120 (might be a LT120, decals are gone) running a B&S 20hp Intek V-twin. It seems to have power but it will pop through the carb once every 30 to 45 seconds and hunts/surges at high speed.(rpms) We've had the Nikki carb off and soaked it for a day in a bucket of carb cleaner, we then adjusted the rocker clearance,(the clearance was way out of spec). The engine seemed a little better after the valve clearance was restored but after a few minutes it was popping again.
Any thoughts?
Thanks
E.

 

[woodpecker41]

If the valve clearance was off for a long time it could have burned a valve. Roger

 

[jd_430]

Roger,
As always thanks for the reply. I looked tonight at the ID tag. This L120 is a 2004 model. I highly doubt anyone ever had the rocker covers off before me so you are probably right about a burnt valve.
The clearance was at about .011, we re-set it to .004 as this is the spec we found on-line at B&S.
Thanks.
E.

 

[woodpecker41]

Eric that was mostly a guess. Usually valve clearance gets smaller not larger. Roger

 

[randylbarnes]

I put the helper spring in the 110 last night. Is it normal for the spring to sit on top of the cross shaft for the brake or do I have the wrong mounting bracket?

(Message edited by treed on October 11, 2014)

 

[ripple_fx1]

wrong bracket...

 

[randylbarnes]

Does anyone have a picture of the correct bracket???

 

[woodpecker41]

There are pictures of both of the brackets used. You need the year and serial number of the tractor to look at the parts page in www.jdparts.com. Roger

 

[ed_lincoln]

If it has the brake shaft it is either a 73 or 74 with a manual lift. Usually that type of spring is used on round fender and 72,73,and 74 with electric lift.

 

[Grant Baker]

Here is how it looked on a 71 110 parts tractor I got

 

[ripple_fx1]

Here's a link to a thread that contains the installation guide with some pix:
http://www.wfmachines.com/discus/messages/335/316368.html