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Home›Repair guides›Idle Speed Adjustment

615, 616, 617 — Idle Speed Adjustment

For the 615, 616, 617.

Before you start

  • Do not adjust idle speed when engine is too hot, immediately following a fast ride or after measuring output on output dynamometer.

Procedure

  1. Switch off air conditioner or automatic climate control. Move selector lever in position 'P'.
  2. Connect revolution counter. Use adaptor when connecting mechanical revolution counter.
  3. Run engine to 75-85°C oil temperature.
  4. Check regulating linkage for easy operation and wear.
  5. Turn idle speed adjuster completely to the right.
  6. Check distance between adjusting ring and guide lever and adjust, if required. Nominal dimension approx. 0.1 mm.
  7. Disconnect connecting rod (3). Check throttle valve and check valve flap for easy operation.
  8. Check idle speed and adjust to specified speed by means of idle speed adjusting screw (4), if required.

Tools required

  • revolution counter
  • adaptor

Specs & torque values

  • idle speed: 700-800 l/min
  • oil temperature: 75-85°C

Source: manual:OM615-616-617.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.