Craftsman Marine — Inspection and tensioning of the V-belt
Maintenance
From a Craftsman Marine owner's manual covering: CM 2.16, CM 3.27, CM3.27. Check it applies to your exact model before use.
Applies to: Craftsman Marine CM 2.16, Craftsman Marine CM 3.27
Before you start
- Only check the V-belt when the engine is not running.
Procedure
- Only check the V-belt when the engine is not running.
- Check the V-belt for wear and tear, cracks, fissures and ravels; replace it if any are found.
- Check the tension: the belt must move no more than 12 mm using thumb and forefinger and a force of about 10 kg.
- If the travel is greater, adjust the tension: loosen the bolts of the support and both bolts of the alternator.
- Tension the belt by pushing the alternator outward.
- First tighten the upper bolt of the alternator, thereafter the support and the lower bolt of the alternator.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- V-belt deflection max 12 mm with a force of about 10 kg
Source: Craftsman Marine owner'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.