GPI M-Series How to Clean or Replace Bypass Poppet

A quick and easy how-to guide to clean or replace the M-Series bypass poppet for continued normal operation. If your GPI pump is not running properly there are many steps you can take to troubleshoot and fix your pump in the field!
Check out our troubleshooting video for more tips!
• GPI/GPRO Fuel Transfer...
For detailed instructions please see our Owner’s Manual: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/s3-us-west-2.a...
M-115 Owner's Manual: chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/s3-us-west-2.a...
Product Links
M-150 Series Fuel Transfer Pumps: greatplainsind...
M-180 Series Fuel Transfer Pumps: greatplainsind...
M-240 Series Fuel Transfer Pumps: greatplainsind...
M-1115 Series Fuel Transfer Pumps: greatplainsind...
BYPASS POPPET REPLACEMENT KIT FOR M-SERIES: greatplainsind...
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If you need any assistance with your replacement or with installation, contact our GPI Customer Support Department. We will be happy to assist you.
Great Plains Industries Customer Support Department
[e-mail]
[phone] or [phone]
gpi.net/

[@Freedom17762]

I have pumped over 6600 gallons of diesel though my gpi pump but the other day it wouldn’t prime. Not even try to prime. So I took it all apart and looked for places it could be pulling air but couldn’t find any. Then I looked at this part and found the O-ring was missing. I grabbed an O-ring from my harbor freight kit and it works like new.

[@GPIglobal]

We are glad to hear that you could repair your poppet and get your pump up and running again!

[@RoyVacci]

Having that problem now the pump not priming what can i do