B3300SU PTO wont engage/Tractor will start without clutch engaged

ScottyK

New member

Equipment
B3300SU
Sep 13, 2026
5
0
1
Alabama
Got tractor from a relative so can't attest to what worked or its history. I noticed that the PTO won't engage. The PTO safety works and tractor won't start with PTO engaged. However the tractor will start without the clutch engaged. I don't have a B3300 WSM but do have a B3200 WSM which appears to be very similar but nothing in trouble shooting for this and can't find a clutch safety switch in the wiring diagram. There is a HST switch but since it starts not sure how that would disable the start for the clutch. The only procedure I can find is the Clutch Free travel check.
 

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, G2160/RCK60, G2460/RCK60
Apr 6, 2021
12,899
7,320
113
Myersville, MD
windyridgefarm.us
Got tractor from a relative so can't attest to what worked or its history. I noticed that the PTO won't engage. The PTO safety works and tractor won't start with PTO engaged. However the tractor will start without the clutch engaged. I don't have a B3300 WSM but do have a B3200 WSM which appears to be very similar but nothing in trouble shooting for this and can't find a clutch safety switch in the wiring diagram. There is a HST switch but since it starts not sure how that would disable the start for the clutch. The only procedure I can find is the Clutch Free travel check.
I cant speak to that specific tractor but many HST models (e.g L3901) do not have a clutch interlock. The HST interlock provides that function.

Dan
 

Fastball714

Member

Equipment
L4060HSTC, B3300SU
Feb 27, 2021
55
60
18
Georgia
I have a B3300SU HSD. No need for a safety switch. It's hydro static drive Dan is correct.

I only use clutch to change from Low, medium, or high range or engage the pto.
 

North Idaho Wolfman

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Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
36,365
11,174
113
Sandpoint, ID
Got tractor from a relative so can't attest to what worked or its history. I noticed that the PTO won't engage. The PTO safety works and tractor won't start with PTO engaged. However the tractor will start without the clutch engaged. I don't have a B3300 WSM but do have a B3200 WSM which appears to be very similar but nothing in trouble shooting for this and can't find a clutch safety switch in the wiring diagram. There is a HST switch but since it starts not sure how that would disable the start for the clutch. The only procedure I can find is the Clutch Free travel check.
Try using the WSM for the B3300 as it's different from the B3200.
Look at the top right of your screen at the envelope. ;)
 

ScottyK

New member

Equipment
B3300SU
Sep 13, 2026
5
0
1
Alabama
Ok so error reading the manual... there is no safety switch on the clutch...it read depress the clutch and step on the HST. So I will close this thread. I guess my only problem is the PTO doesn't turn. The local dealer thinks it may have sheared and recommended pulling the plate at the PTO and pulling the shaft. Thanks everyone