JDcrawlers Messageboard

TSX 641 should use a (Standard Motor Products) Hy Grade # 1305 basic carb kit. Any parts store that carries SMP parts should be able to get that kit or get one in the brand they carry using your carb number. Do you have torch tip clears or small wires to clean passages with? It is best to run someth...

You could try backing the self-adjuster off. If the lever stop bolt wasn't set right the lever could have stroked too far, allowing the self-adjuster to over tighten the brake. If backing it off helps, I would suggest backing it off enough to do the complete steering system adjustment by the manual.

I don't have a 450C manual so I can't see how that one is worded. I agree they can be a bit hard to follow at times. One has to remember these manuals are written for JD mechanics (not the DIY market) who have training along with experience on these and similar machines. I have access to a 450B (dry...

As I suspected, it is a TSX 641. The 6 is visible in your picture. The 1 56 is a reference to the carburetor's build date. Pictures taken at different angles often help with reading "faded" numbers. The 6 appears to have been lightly stamped compared to the others. A bit of light rubbing with some S...

Can you post a picture of the tag? What is the length of the bowl gasket? 4-1/4", 5", or 5-3/16". It appears the TSX 641 has 2-11/16" mounting stud centers and the TSX 156 has 2-5/16 stud centers. It doesn't appear the two use the same kit so it would be best to try to confirm which it actually has ...

If the Harbor Freight gauge is correct and matches the reading of the crawler's gauge, oil pressure is low. If this had an engine rebuild 200 hours ago and oil pressure is way below the spec, something related to the rebuild could be suspect.

As for the steering. If it is a C series it has wet clutches. Most of the adjustments are to the steering valves, not like dry clutch machines. The brakes are self-adjusting. The adjustment procedures for both are in the technical manual. It not a just turn this adjustment. The transmission and stee...

How much do you run it? Possibly a valve(s) sticking from setting?

15W40 should be fine. If the oil pressure can't be held with 15W40, using heavier oil to raise pressure only hides the problem for a time, at best. JMHO. I would start by confirming that your current gauge is correct. You need a gauge known to be accurate (often called a master gauge) to check the o...

What seems to be lacking?

Welcome to the Boards. The current part number for a new head from JD is AR100074. Numbers cast into components may or may not be part numbers, often they are not. The numbers you posted are casting numbers and can be used to identify a used head that could work. Sometimes a given series of engine m...

Welcome to the Boards. You can contact Lavoy Wilcox, owner and provider of this site for manuals and parts. He has a shop and repairs early JD crawlers. His email is postmaster@jdcrawlers.com or phone is 701-361-1006 during CST business hours. To post pictures you need to use a third party hosting s...

Hi Stan, If his 450C happens to have the rolls with just a grease fitting and no vent, your info will help him. It is possible the 450C manual on the JD Construction bookstore is their latest publication and his machine might have the type roll your 350C had. That type could have been installed as r...

Good morning Stan, In this case I am going to have to respectfully disagree with your post. Here is where the correct manual comes into play. These rolls are different as far as lube instructions than the earlier ones, like the 350C. If the lube was checked properly, in 450C rolls similar to the one...

If the site is accessible from your location (New Zealand?) this page from McMaster-Carr (a large supply house in the USA) has a good bit of info on all grease fittings and gun attachments which may help you find what you need. Head diameter is needed to get the proper adapter or gun tip. https://ww...