Craftsman Marine — Filling the inner cooling circuit
Installation · Cooling system
From a Craftsman Marine owner's manual covering: CM4.33, CM4.42, CM4.52. Check it applies to your exact model before use.
Applies to: Craftsman Marine CM4.33, Craftsman Marine CM4.42
Before you start
- Never fill the cooling system with sea water!
Procedure
- Remove the filler cap on top of the heat exchanger housing, or the cap on top of the expansion tank if fitted.
- Fill the cooling system with 6.5 liters of cooling liquid.
- Use a ready-to-use product or a mixture of 40% anti-freeze (ethylene-glycol) and 60% clean tap water.
- Fill the system to about 1 cm below the bottom of the filler pipe.
- Replace the filler cap and tighten the breather bolt.
- After the first run, verify the level of the cooling liquid and top up if necessary.
Specs & values
- 6.5 liters of cooling liquid; 40% anti-freeze / 60% clean tap water
Full service-parts list: Craftsman Marine CM4.33 →, Craftsman Marine CM4.42 →
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.