Mercury Marine MCM 4.3L / MCM 4.3L EFI — Inspecting Serpentine Drive Belt
Maintenance
For the Mercury Marine MCM 4.3L / MCM 4.3L EFI, from the Mercury Marine service manual.
Before you start
- Avoid possible serious injury; shut off engine and remove ignition key before inspecting belt
Procedure
- Make sure engine is shut off and ignition key is removed.
- Inspect drive belt for excessive wear, cracks, fraying and glazed surfaces.
- Minor transverse cracks may be acceptable; longitudinal cracks joining transverse cracks are NOT acceptable.
Source: Mercury Marine 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.