Kubota — Checking Nozzle Injection Pressure
Testing & diagnosis · Injection nozzle
From a Kubota service manual — check it applies to your exact model before use.
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Before you start
- Confirm nobody is standing in the direction the fuel fume goes.
Procedure
- Set the injection nozzle to the nozzle tester (Code No: 07909-31361).
- Slowly move the tester handle to measure pressure at which fuel begins jetting.
- If out of spec, change adjusting washer until proper injection pressure is obtained.
- If spraying condition is defective, replace the nozzle piece.
Tools required
- Nozzle tester 07909-31361 Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 13.73 to 14.71 MPa (140 to 150 kgf/cm2, 1991 to 2133 psi)
- 0.025 mm washer change = approx. 59 kPa
Source: Kubota service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.