Adjusting / setting up throttle cable on a 1650

[ClickClickBoom]

Putting a new engine in my 1650, and for the life of me can't figure out how to adjust the throttle cable and brackets on this so that I have full range of throttle in the dash and at the carb.

I can't find a section of the service manual that outlines how to set this up, anyone know?

[J-Mech]

Trial and error. FWIW, you likely won't get it perfect. Seems you never can.

[johncub7172]

I think your right Jon. I'd start by assuring the engine control assembly is correctly assembled, then go from there. Usually pictures from the group are often better described than what the black and white manuals detail. I'd go out to my 1450 for Picts but I'm under the weather at the moment.

[ClickClickBoom]

Is there any trick, or sequence of things to tighten or adjust?

[J-Mech]

The cable hooks up to the linkage in one of the supplied holes. Which one, is for you to figure out. If the throttle won't hold position, the problem is in the throttle lever itself. Once installed and moving like you want it, set the high and low idle. It's really not difficult. Takes a little time and that's about it.

[RustyYellow]

Not knowing/seeing engine setup, is little hard to diagnose, but I can tell you how I'd do it.

You want to first make sure you have enough throttle cable/sheath to carburetor and enough looseness in system to clamp onto the holder bracket without any hard/kinked bends of wire inside the sheath.

I always put the dash throttle handle into the WOT(wide open throttle) position then look at carb's connection and make either a Z-bend or slide wire into the keeper and screw down with carb in a WOT position.

After hooking cable to carb you then fit the cable assembly onto the cable holder's bracket assembly.

Now, work throttle handle back and forth from WOT to idle a couple times(before starting up) while looking inside carburetor for WOT and going to idle(butterfly valve closes) when handle is moved that direction.

If you have good idle with dash lever, but you don't get WOT, you loosen up the cable holding clamp and slide the cable manually up or down slowly, to get the carb lever to move the butterfly into the more open position. If you don't get good Idle, you move the cable some to close the carb's valve.

It's a working back and forth of throttle handle, sometimes cutting a bit of length of cable if too long and adjustment of carburetor idle screw(if need be) to get everything working together. After all this ,you then adjust the carb's high/low air screws to tweak the air fuel ratio for best running.

It's not so much a trick or sequence, but something that just works when working on old equipment and many times, some luck thrown in.

[ClickClickBoom]

Thanks, that's what I was after. Wasn't sure where to start WOT or Idle to get the carb / throttle to play nice.

[J-Mech]

Originally Posted by RustyYellow

Not knowing/seeing engine setup, is little hard to diagnose, but I can tell you how I'd do it.

You want to first make sure you have enough throttle cable/sheath to carburetor and enough looseness in system to clamp onto the holder bracket without any hard/kinked bends of wire inside the sheath.

I always put the dash throttle handle into the WOT(wide open throttle) position then look at carb's connection and make either a Z-bend or slide wire into the keeper and screw down with carb in a WOT position.

After hooking cable to carb you then fit the cable assembly onto the cable holder's bracket assembly.

Now, work throttle handle back and forth from WOT to idle a couple times(before starting up) while looking inside carburetor for WOT and going to idle(butterfly valve closes) when handle is moved that direction.

If you have good idle with dash lever, but you don't get WOT, you loosen up the cable holding clamp and slide the cable manually up or down slowly, to get the carb lever to move the butterfly into the more open position. If you don't get good Idle, you move the cable some to close the carb's valve.

It's a working back and forth of throttle handle, sometimes cutting a bit of length of cable if too long and adjustment of carburetor idle screw(if need be) to get everything working together. After all this ,you then adjust the carb's high/low air screws to tweak the air fuel ratio for best running.

It's not so much a trick or sequence, but something that just works when working on old equipment and many times, some luck thrown in.

The throttle cable doesn't hook to the carb. It hooks up to the linkage on the side of the engine..... Plus, with a governor engine, you will get WOT when you raise the throttle lever just a bit. Way before you get to the end of the dash lever. That's how a governor works. You will need to fine tune the position of the cable after you get it running most likely, as the WOT position on that series of tractor is set via the linkage that the cable hooks to on the side of the engine. While your advice sounds good if you were working on an old pickup or car.... it doesn't sound to me like it is very helpful on this particular tractor (or any tractor for that matter) the OP is asking about, as you really didn't mention any of the particular linkages or settings this machine uses... and apparently the OP needs all the specific help he can get.

[1250LC]

Follow this link to download the Kohler service manual. Section 6 deals with carburetor and governor.

http://resources.kohler.com/power/ko...df/tp_2379.pdf