Setting throttle linkage on a 318

[mcink]

I have a 1984 model 318 tractor that I recently purchased. It was a private sale but located on the local Massey dealers lot. It needed a new carb gasket which was MIA and a replacement throttle cable which the Massey dealer replaced with JD parts. We used to have a JD dealership located on the next door property but in the last 25 years we only have ten in the province of Saskatchewan held now by two publicly traded companies, and the nearest is 75 miles away.


The Massey dealer is best known for not hiring licensed mechanics - just "Hobos who like to tinker", and it shows. Anything under half throttle on the dash and it stalls. According to my digital tach I'm only getting 2500 RPM instead of the required 3450. When I first got it here the carb was so rich you're eyes would water from twenty feet away [plus he bitched and moaned to no end of how hard it was to strip off the side panels and replace them]. I do have the PDF manual for it and got the carb dialed in but the directions for setting the RPM are a bit thin. Setting the cable against the Stop has been done but knowing the Tinkers Jimmy hires, I'm lucky the **** carb wasn't installed backwards.


So my question is, exactly how is the throttle and governor to be set so I reach the correct RPM to run the snowblower and mower deck and not have it stall out when the lever is pulled back? The unit has 1025 hours on it, it runs smooth but as is the blower throws the snow MAYBE five feet.


Thank you


[former farm boy, now in wheelchair, former owner of a 312, 420 and LX178]

 

[C-Range]

Hi mc,

It's been a while here and I'm sure some more helpful folk will be along. The only thoughts that came to mind were to pay attention to the holes in which the return springs are installed as they will have an effect, probably obvious to you. The other thought that occurred was whether it might be possible that the choke cable isn't installed correctly and not closing the choke all of the way. Perhaps you are focussing on the carb and not catching something secondary.

If these ideas aren't helpful, no need to acknowledge. Just quick thoughts. Good luck! Great tractor.

 

[glc24]

Hello mc
If you have a Onan P218,this is how my linkage is setup. The B43 may be setup the same,I'm not sure of that one.

Greg

 

[mcink]

That was it. Jimmys unlicensed mechanics made no effort to note which hole attached to what and now all is fine.

Many thanks.

 

[Gravel7]

Hello,
Using the search feature this post came up and is similar to my problem. GLC24's picture, wow, that is clean!, is the same setup as mine. My problem is this: Tractor started running a bit rough, almost like I had some bad gas. Carb was cleaned a year or so ago.
I notice that when I move the throttle lever it will move a bit before it moves the throttle arm. Is it the governor arm or rod that runs from the throttle arm to the carb? (clearly shown in Glc24's picture). Is that governor rod supposed to move very freely no matter the position of the throttle? Mine does. It seems to me that a spring may have broken. Maybe a spring pulls back on it slightly so it returns to zero with the throttle lever? I have to move my throttle almost half way before this rod to the carb moves and when I put the throttle all the way down, the rod stays where it is. This is with the tractor not running. Is this normal operation and my problem is elsewhere?

Thanks!