Craftsman Marine — Adjusting the fan belt tension
Maintenance · Cooling system
From a Craftsman Marine service manual — check it applies to your exact model before use.
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Procedure
- Press the belt at a midpoint between the alternator pulley and crankshaft pulley with your thumb.
- Check that belt deflection is about 10 mm [0.3937 in.] (about 98 N (10 kgf) [22 lbf]).
- Adjust tension as required.
Specs & values
- Belt deflection approx. 10 mm [0.3937 in.] (98 N (10 kgf) [22 lbf] thumb force)
Source: Craftsman 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.