Westerbeke 90A FOUR — Checking the Idle Speed
Adjustments · Fuel Injection Pump / Tachometer
For the Westerbeke 90A FOUR, from the Westerbeke operator's manual.
Procedure
- Warm up the engine to normal operating temperature.
- Place a piece of suitable reflecting tape on the crankshaft pulley.
- Start and idle the engine.
- Aim the light of the tachometer onto the reflecting tape to confirm the engine speed.
- Compare and adjust the instrument panel tachometer using the calibration pod.
- Adjust the idle speed if the engine speed is not within the specified value.
Tools required
- Photoelectric type tachometer Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Normal idle speed: 600 - 900 rpm
Source: Westerbeke operator's 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.