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Fuel Injection Pump Installation and Timing Guide

If you have already done some troubleshooting for your tractor and have been able to accurately diagnose the issue, you might be ready to begin repairing your tractor’s fuel injection pump. We want to help make installing new fuel system parts quick and simple.

For Jinma Tractors, Farm Pro Tractors, and More Chinese Tractor Models

Once you have removed your old fuel injection pump, here's how to install your new pump and set the timing:

1) Rotate the engine until the #1 piston rises to its highest point.

2) Connect the new pump to all fuel lines, except for the top hard lines that connect to each injector. Do not connect the pump yet.

3) Press the primer pump to build pressure, open the bleeder valve to release air, then close the bleeder valve. Repeat until fuel comes out of the bleeder valve.

4) Slowly rotate the fuel injection pump shaft. Stop rotating as soon as fuel rises to the top of the #1 hardline port.

5) Install the pump onto the fuel injection pump gear and bolt pump to the timing gearcase.

6) This procedure should get your tractor running, but some fine-tuning may be required to achieve optimum performance.

7) Some timing gears have a set of two dots, which are the timing marks. The single dot on the idle gear should meet between the 2 dots on the timing gear.

8) Important: Be sure to check the pump oil after installation. Use 15W40 Rotella for both the engine and the pump. There are normally two small bolts on the backside of the pump that are used for fill levels. Remove the bottom bolt, then add oil until it comes out of that hole.

Hopefully, this will help you get your tractor back up and running in no time! If you need a new fuel injection pump for your tractor, take a look at our inventory of fuel system parts to see what we have in stock or in other parts categories. Do you also need a new water pump? Circle G has all you need for complete engine repair so if you’re looking for more Jinma Tractor parts, consider these parts to keep on hand for your tractor. Contact us today!