October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Injection Nozzles

The injection nozzles spray fuel into a prechamber on each compression stroke. A fuel return line connects all injectors and returns excess fuel to the pump. If spray patterns are incorrect, nozzles can be overhauled.

Injector opening pressures are adjustable. On I-Mark models, opening pressures can be adjusted by shim replacement. P'UP models use an adjustment screw in the injector nozzle.