Tuthill FILL-RITE SD600

Questions and Answers

A
aaronalexanderAug 13, 2025
How to troubleshoot a Tuthill FILL-RITE SD600 that won't prime?
- P
  Pamela MartinAug 13, 2025
  If your Tuthill Water Pump won’t prime, several issues could be the cause. First, check the suction line for any leaks or restrictions. Also, inspect the bypass valve to ensure it moves freely and is free of debris. Examine the vanes and rotor slots for any nicks, burrs, or wear. Inspect the rotor and vanes for excessive wear or damage, and replace them if necessary. If you are using an automatic nozzle, remove it to prime the pump. Finally, check the filter and bypass valve for debris and remove the nozzle to test the flow with the pump on.
J
jessicaaguilarAug 16, 2025
What to do if Tuthill FILL-RITE SD600 has low capacity?
- M
  Michael HarrellAug 16, 2025
  If your Tuthill Water Pump has low capacity, start by removing and cleaning the screen to eliminate excessive dirt. Check the suction line for leaks or restrictions. Inspect the bypass valve to ensure it moves freely and is free of debris. Check the pump outlet hose, nozzle, and filter for any blockages. Inspect the vanes and rotor slots for wear, and replace them if necessary. Check the rotor and vanes for excessive wear or damage, and replace if needed. Replace any damaged hoses or nozzles, preferably with UL-rated ones. Replace the filter if it's plugged. Finally, ensure the fluid level is adequate and fill the tank if it's low.
B
Breanna WilliamsAug 20, 2025
Why does the Tuthill FILL-RITE SD600 motor stall and blow fuses?
- J
  John BarrettAug 20, 2025
  If the motor of your Tuthill Water Pump stalls, the fuse blows, or the thermal protector trips repeatedly, start by inspecting the bypass valve to ensure it moves freely and is free of debris. Check the incoming supply line voltage to rule out low voltage. Examine the rotor and vanes for excessive wear or damage. Finally, clean any debris from the pump cavity.
B
brett52Aug 25, 2025
How to fix fluid leakage in Tuthill Water Pump?
- Z
  Zachary HornAug 25, 2025
  If you notice fluid leakage from your Tuthill Water Pump, check and replace all O-ring gaskets on the rotor cover, inlet flange, and bypass cap. Replace the shaft seal. Refer to the wetted parts list to the fluid manufacturer to ensure fluid compatibility. Also, ensure all fasteners are tightened.
K
Kayla MartinAug 27, 2025
Why is my Tuthill FILL-RITE SD600 Water Pump motor overheating?
- D
  David OdonnellAug 28, 2025
  If the motor of your Tuthill Water Pump overheats, it might be due to transferring high viscosity fluids, which should only be done for short periods (less than 30 minutes). Remove the inlet and clean the screen. Remove and clean any restricted suction pipes. For motor failure, contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT).
L
Leslie ScottAug 31, 2025
What causes a Tuthill FILL-RITE SD600 Water Pump to run slowly?
- N
  nancy30Aug 31, 2025
  If your Tuthill Water Pump runs slowly, check the incoming supply line voltage to ensure it is correct. Inspect the vanes and rotor slots for nicks, burrs, and wear. Check for loose connections in the wiring. For a motor problem, contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT).
B
Barbara KochSep 4, 2025
Why is the motor of my Tuthill FILL-RITE SD600 inoperable?
- A
  Audrey LeeSep 4, 2025
  If the motor of your Tuthill Water Pump is inoperable, check the incoming supply line power. Use a multimeter to isolate any issues with the supply line power. For motor failure, contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT). Clean and check the pump rotor, repairing as needed with KIT120RG if there is a locked rotor. Verify correct wire size with local, state, and national electric codes if there is incorrect or loose wiring.
J
James DennisSep 8, 2025
What to do if Tuthill FILL-RITE SD600 Water Pump hums but does not operate?
- F
  fshawSep 8, 2025
  If your Tuthill Water Pump hums but will not operate, contact Tuthill Customer Service at 1-800-634-2695 (M-F, 8am-6pm EST/EDT) because it may be a motor failure. Also, remove any debris and replace the key if the rotor key is broken.

Summary

About This Manual

Symbols and Definitions

Explains danger, warning, caution, and notice symbols used in the manual for hazard communication.

Before You Begin

Outlines fueling requirements, power source needs, and necessary tools before starting pump installation.

Safety Information

Installation

Stationary Tank Installation

Details mounting instructions for stationary fuel tanks, including suction pipe recommendations and vent caps.

Mobile Tank Installation

Covers installation for mobile fuel tanks, including telescoping and custom suction pipes.

DC Wiring and Grounding

Mobile Tank Wiring to Vehicle Systems

Connects DC pumps to vehicle systems, detailing negative/positive ground and wiring practices.

Stationary Tank & Non-Vehicle System Wiring

Covers wiring for stationary tanks and non-vehicle DC power sources, including fuse requirements.

115 V AC Wiring Instructions

Operation Instructions

Pump Operation

Steps for operating the pump, including nozzle handling, switch operation, and dispensing fluid.

Security Features

Details the pump's locking link feature for security and recommends a padlock.

Troubleshooting Guide

Offers basic diagnostic assistance for abnormal pump service and provides contact information for support.

Specifications and Models

Performance Curves

1200 & 2400 Series Performance Curves

Graphs showing pressure vs. flow rate for the 1200 and 2400 series fuel transfer pumps.

4200 & 4400 Series Performance Curves

Graphs showing pressure vs. flow rate for the 4200 and 4400 series fuel transfer pumps.

600 Series Performance Curve

Graph showing pressure vs. flow rate for the 600 series fuel transfer pumps.

Accessories

Pump Service Kits

Safety Testing Approvals

Motor Tag Information

Tuthill FILL-RITE SD600 Specifications

General

Model	SD600
Category	Water Pump
Type	Diaphragm Pump
Voltage	12V DC
Power Source DC	Yes
Thermal Overload Protection	Yes
Flow Rate	6 GPM
Power Source	DC
Inlet Size	3/4 inch
Outlet Size	3/4 inch
Duty Cycle	30 min