GR2120 Electric Fuel pump question

TJP440

Member

Equipment
Gr2120 and B3200
Apr 16, 2017
56
30
18
Omaha, Ne
Can someone tell me if the electric fuel supply pump runs all the time when the key is in the on position?
I seem to recall it shutting off after a short time if the engine wasn't running. Mine is currently running all the time. The unit is a 2017 with just over 600 hours.
I found another post from 2021 with the same symptoms but no mention of it shutting off with the key on 🤔. He reported it was the pump. I don't want to throw parts at it or drop 150.00 on a pump if the issue is elsewhere.

I'm asking as it occasionally hiccups as though it's not getting enough fuel. This happens when mowing up a steep hill or mowing a similar hill sideways.
It is very inconsistent / intermittent which is always fun to diagnose :(. It's also not repeatable.
I know there are several safety switches that could cause the issue as well. I can jumper them but the fuel pump question may be an indicator of a pump going south so I'm starting with that before I chase my tail.
Might this also be a common failure ? Messicks has 2 in stock so ?
TiA 🍻
 
Last edited:

North Idaho Wolfman

Moderator
Staff member
Lifetime Member

Equipment
L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
32,692
8,224
113
Sandpoint, ID
I don't have the WSM for that model, but if it's like all the rest of the Kubota's, the pump runs all the time the key is on.
If it's not then there's and issue.
If it's clicking loud and fast it's not moving fuel, so check the fuel flow to the pump.