N37347 Chapter 7
Page 49
Engine preservation
Introduction
The recommendations indicated below are designed to prevent damage to the engine when it is withdrawn
from service for a prolonged period. Use these procedures after the engine is withdrawn from service. The
instructions for the use of POWERPART products are given on the outside of each container.
Procedure
1. Completely clean the outside of the engine.
2. When a preservative fuel is to be used, drain the fuel system and ll it with the preservative fuel.
POWERPART Lay-Up 1 can be added to the normal fuel to change it to a preservative fuel. If preservative
fuel is not used, the system can be completely lled with normal fuel but the fuel must be drained and
discarded at the end of the storage period together with the fuel lter canister.
3. Operate the engine until it is warm. Then correct leakages of fuel, lubricating oil or air. Stop the engine
and drain the lubricating oil from the sump.
4. Renew the canister of the lubricating oil lter.
5. Fill the sump to the full mark with new and clean lubricating oil and add POWERPART Lay-up 2 to
the oil to protect the engine against corrosion. If POWERPART Lay-Up 2 is not available, use a correct
preservative uid instead of the lubricating oil. If a preservative uid is used, this must be drained and the
lubricating oil sump must be lled to the correct level with normal lubricating oil at the end of the storage
period.
6. Drain the coolant circuit. In order to protect the cooling system against corrosion, ll it with an approved
antifreeze mixture because this gives protection against corrosion.
Caution: If protection against frost is not necessary and a corrosion inhibitor is to be used, it is recommended
that you consult the Service Department, Wimborne Marine Power Centre
7. Operate the engine for a short period in order to circulate the lubricating oil and the coolant in the
engine.
8. Close the seacock and drain the raw water cooling system.
Caution: The raw water system cannot be drained completely. If the system is drained for engine preservation
purposes or for protection from frost, the system must be lled again with an approved antifreeze mixture.
9. Remove the impeller from the raw water pump and put the impeller in a dark place for storage. Before
the impeller is tted at the end of the storage period, lubricate lightly the blades and each end of the impeller
and the inside of the pump with Spheerol SX2 grease or glycerine.
Caution: The raw water pump must never run in a dry condition because this can damage the impeller
blades.
10. Remove the atomisers and spray POWERPART Lay-Up 2 for one to two seconds into each cylinder
bore with the piston at BDC.
11. Slowly turn the crankshaft one revolution and then t the atomisers, complete with new seat washers.
12. Spray POWERPART Lay-Up 2 into the induction manifold. Seal the manifold and breather outlet with
waterproof tape.
13. Remove the exhaust pipe. Spray POWERPART Lay-Up 2 into the exhaust manifold. Seal the manifold
with waterproof tape.
14. Disconnect the battery. Then put the battery into safe storage in a fully charged condition. Before the
battery is put into storage, protect its terminals against corrosion. POWERPART Lay-Up 3 can be used on
the terminals.
15. Seal the vent pipe of the fuel tank or the fuel ller cap with waterproof tape.
16. Remove the alternator drive belt and put it into storage.
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