[kilmer31]

any ideas on the best way to move a 420 seat rearward and up?

 

[coalminer16]

Past the factory mounts for rearward? Up you would need to shim.

 

[chuckv]

Lee

What seat are you needing to adjust-- a newer replacement one?

The replacement seat pans have mounting holes that are a bit further back than the originals, which makes the mounted seat positioned quite biased toward the front of the tractor, so I drilled added holes in the flip-up plate to adjust that offset. Notice the four bolts are well rearward of the slots in the flip-up part of the suspension seat mechanism...

The suspension seat mechanism does ride a bit higher than the flat spring style (particularly flat springs that are 3 decades old...)

Chuck

 

[knottyrope]

Suspension is nice. I have one on my 430 and my 420 has a c spring one. I enjoy the 430 more with its nicer seat. I am 6ft so the extra leg room is nice.

I have seen some put a spacer between seat pan and spring and another that added in a second spring set under the originals

Tractor supply has some seats too but you would have to make a mount for them.

 

[kilmer31]

Thanks guys. Its definitely a replacement seat. Ill take a look tonight and see what can be done.

Lee

 

[shadetree]

Two problems to watch for.
1. hooking your legs knees against the steering wheel.
2. The gas cap. You don't want to break that.

 

[425and300jd]

Lee,
I moved my seat back by cutting some off the bottom half of the "C" springs,
moving them back and drilling new holes in the fenderdeck.
I then added 2 coil springs for support (JD M89540 about $8 each).
This gave me about 2" more belly room and the seat still clears the gas tank fill neck.
Downside, the seat position is no longer adjustable fore and aft.

 

[kilmer31]

What im going to do is weld a piece to the mounting plate and drill new holes. I have taken measurements and this will not have issues with the filler neck. I will let you know how this turns out. Thanks to all.

Lee

 

[mikeduwe]

The springs (u shaped part) are heat treated to make them springy. Welding will make the brittle and may lead to cracking.

 

[knottyrope]

if you move the seat back on the springs, it will bottom out quicker on bumps

 

[kilmer31]

Im not welding the springs, just adding a piece to the plate so I can drill more holes.

Lee

 

[jd4001]

Doug, funny I did the same on a CC 125 I have. Made plowing so much more comfortable after getting away from the seat mounted directly to the deck pan. Wasnt even on a C spring literally mount to fender deck.

 

[akaothermick]

Solo seat springs are what I used for extra support, just bolted them to the seat spring, less than $8 on Ebay for a pair

 

[kilmer31]

I ended up moving the seat back 2.5" and putting two coil springs in the back. FYI, My local Kubota dealer didn't have the JD springs in stock(they were a JD dealer), but found some Kubota springs for $ 4.00 each. Thanks for the help.

Lee