Jubilee throttle issue

Fishtreker · Aug 12, 2014

The problem i am having is this, while the engine is running if i pull the throttle lever down to increase speed and let go it pulls itself back to a lower speed, if i shut the engine off and pull the throttle lever back it stays in whatever position i leave it in. Another problem is when i put it in gear the engine wants to stall even if i am giving it alot of gas. The carb I have is a Zenith, could it be in need of a rebuid?

souNdguy · Aug 12, 2014

could your carb need a rebuild? dunno? maybee.. maybee not. you havn't done any / enough troubleshooting to tell us this yet.

stalling trying to let clutch out in gear?

could be you are super lean.. could be you are running on 2 cylinders. You need to check spark, see if pulling 1 spark plug wire and then replacing it, and going down the line.. see what that does. if you hit a plug that makes little or no difference to engine sound, that jug is not fireing... resolve that then next check see what you are doing for fuel flow, and if a lil choke helps when letting out the clutch.

for the slipping throttle handle.. that's a mechanical problem. you may be missing the compensation spring, and/or not have the throttle friction disc tight enough.. it is located at the bellcrank on top of the bellhousing.

Fishtreker · Aug 12, 2014

It is stalling when letting out clutch in gear, I will check spark plugs to see if all are firing, if it is lean where is the adjustment on carb, there is a spring located close to the alternator on the rod that connects to the carberator is this the compensation spring?
You mentioned a throttle friction disk on the bell housing, where would that be.

Keith Williams · Aug 12, 2014

Under the battery tray.
HTH
Keith

souNdguy · Aug 12, 2014

re-read my post and pull out your shop manual.

it will be clear the locations and parts i mentioned.

Fishtreker · Aug 12, 2014

I don't have a shop manual yet, still learning where things are on this tractor but thanks for the info.

Sean in PA · Aug 12, 2014

The friction washer is the part labeled number 22 in the parts diagram in the link below:

[u:ae792b26a4]NAA Throttle linkage parts diagram[/u:ae792b26a4]

If tightening the nut (part numbered 16) doesn't help, then replace the friction washer. Be sure to pull the cotter pin (part number 17) before you try to turn the nut.

Jubilee throttle issue

Fishtreker

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souNdguy

Well-known Member

Fishtreker

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Keith Williams

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souNdguy

Well-known Member

Fishtreker

New User

Sean in PA

Well-known Member

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