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PSI HD 560001-R2 — Engine Compression Test

For the PSI HD 560001-R2.

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Procedure

  1. 1. With engine at operating temperature, detach spark plugs connectors and remove spark plugs from the engine.
  2. 2. Detach wiring harness plug from ignition module.
  3. 3. Open relay holder cover and pull the fuel pump relay out of the base.
  4. 4. Install a compression gauge capable of measuring range up to 250 psi.
  5. 5. Actuate starter for approx. 4 seconds with the throttle valve fully open, minimum engine speed should be 300 rpm.
  6. 6. Reinstall spark plugs, harness, and relay once compression test is completed.

Tools required

  • Compression gauge (250 psi range)

Specs & torque values

  • Compression pressure 194 psi minimum (Min. 170 psi) at 300 rpm
  • Variation between cylinders no greater than 15 psi

Source: manual:7610001-0.998L-Service-Manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.