question Zetor 3320 - Help Needed for some TLC

axv521 said:

#1 Hand Throttle will not stay in a position it always goes back to the closed position and tractor will turn off??

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axv521 said:

#2 Need to figure out how to properly wire starter unfortunately previous owner had some one mess with it and now I can ony start it with a screwdriver at the starter??

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axv521 said:

#3 Going to check/replace clutch cylinder as I have to pump clutch a bunch to get some tiny pressure build up to use clutch? Thoughts am I on the right track? I found a video on you tube that is what I ma going to do first.

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axv521 said:

#4 Need to check my parking brake and pto clutch as they are a bit rusty and hard to use so I need to know how to properly check them

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Joachim said:

Hello Tony.

View attachment 1771
First try to screw a litle bit harder the red market screw - this makes the hand throttle a little tighter.
If that doesnt help, take a look at the Brake disc (green) and the small plate spring next to it to see if they are still OK.


Wirings diagram do you have found I think.

FAQ - Zetor / ZTS wiring diagrams

Zetor / ZTS wiring diagrams Zetor 15 wiring diagram Zetor 25 A / 25 K wiring diagram Zetor 35 Super wiring diagram Zetor 50 Super wiring diagram Zetor 2011 - 4611 wiring diagram Zetor 5511/5545 wiring diagram Zetor 4712 - 6745 wiring diagram Zetor 4911-6945 wiring diagram...

zetorworld.com

You can check the ignition switch and the start protection switch on the clutch pedal.


But the brake fluid reservoir is still full?
Is the brake fluid still light and clear?

If the clutch slave cylinder (bottom, left side of the tractor on the clutch bell) is not leaking, it should be OK. The master cylinder is located behind the clutch pedal and is quite easy to replace or reseal. A new clutch master cylinder costs around 27 euros in Europe and a sealing kit around 15 euros.
You should also stick with DOT 3 brake fluid and not use DOT 4 or silicone.


I have a repair workshop book for Zetor 3320 to 7340 - but its in German but with many grafics. I can send you this PDF if its helpfull or an other one have it in english and can send it to you...

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Joachim said:

Hello Tony.

View attachment 1771
First try to screw a litle bit harder the red market screw - this makes the hand throttle a little tighter.
If that doesnt help, take a look at the Brake disc (green) and the small plate spring next to it to see if they are still OK.


Wirings diagram do you have found I think.

FAQ - Zetor / ZTS wiring diagrams

Zetor / ZTS wiring diagrams Zetor 15 wiring diagram Zetor 25 A / 25 K wiring diagram Zetor 35 Super wiring diagram Zetor 50 Super wiring diagram Zetor 2011 - 4611 wiring diagram Zetor 5511/5545 wiring diagram Zetor 4712 - 6745 wiring diagram Zetor 4911-6945 wiring diagram...

zetorworld.com

You can check the ignition switch and the start protection switch on the clutch pedal.


But the brake fluid reservoir is still full?
Is the brake fluid still light and clear?

If the clutch slave cylinder (bottom, left side of the tractor on the clutch bell) is not leaking, it should be OK. The master cylinder is located behind the clutch pedal and is quite easy to replace or reseal. A new clutch master cylinder costs around 27 euros in Europe and a sealing kit around 15 euros.
You should also stick with DOT 3 brake fluid and not use DOT 4 or silicone.


I have a repair workshop book for Zetor 3320 to 7340 - but its in German but with many grafics. I can send you this PDF if its helpfull or an other one have it in english and can send it to you...

Click to expand...

axv521 said:

should I try and drill the stuck piece out?

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