JGMarine

oil and fuel filters the same for 25/35/42 and 55 range.

Cracked housing from being dropped or overtightened ? An old seal left in the top groove (making 2 in total) is a favouite.

Having used one of these they are fairly noisy and very heavy. Basically they consist of an engine that drives a huge alternator via a belt.

this is 12v wiring on a Polish Aqualine via New Boat Co. Fairly simple to work on. The only problem i have come across is undersized bowthruster charging cables.(IMHO) I know the bow thruster cable thing has been siad before so don't want to start another saga on it.

Drayton Manor park. Next to canal.

The above statement is wrong. They should be connected to the same place.

This is a tough call for a surveyor to make. As has been mentioned the original thickness needs to be taken into consideration as well as the current overall condition. The surveyor is the eyes and ears for the insurance company and has to advise them as to whether the vessel is a good or bad risk. If the surveyor gets that wrong it can be a large claim. Hence why most surveyors are cautious. We all know that a thin boat may be ok if treated correctly. Just look at how many thin working boats are still out there.

4mm is the minimum thickness an insurance company will accept on fully comp insurance. Any thinner and it will need overplating as its classed as uninsurable. You will need more than a few thousand for a full overplateing job. If you are insured fully comp i would wait till the insurance co asks for a survey.

just google "sale of goods act" that will tell you all you need to know. And yes the retailer is responsible for upto 7 years.

Sound like air in the fuel system. If its like most generators then the engine stop solenoid needs to be energised to allow fuel through to bleed/run. This solenoid would normally only be energised when engine is cranking and running. So lots of ignition on/cranking may sort it out. There may be a manual lift pump to enable bleeding via a bleed nipple on the fuel injector pump. If you have a manual then the procedure should be in there.

Probably be the heat exchanger burst and the water valve distorted. Im my experience the water valve can be a pig to repair unless, has been mentioned you go to great lengths to put it right. Heat exchanger can be removed and the burst soldered up. Re con units are available on ebay and this is normally the best option.

once the coolant level gets low the calorifier circuit is the first to suffer.

In my experience the best thing about sterling is the customer service. You get what you pay for.

I believe that the cheaper equipment just does not give out pure electric or does not like poor electric. Just my experiences

What engine is it. This may give a clue. This situation is normally caused by an interuption in the electrical supply.

If your using a generator for 240volt supply you need to ensure that a cheaper type charger will work from it. Some generators especialy the cheaper ones do not poduce very clean electric and may not power a cheaper charger. I know that victron inverter/chargers can be configured to run from a dirty/poor/weak electric supply. Just some thing else to think about.

I still go with a water leak. I would pressure test the system first. See my comments on your other post.

Having been a recognised isuzu engineer since they were first introduced i have never come across or heard of the 35 having a head gasket issue. Now the isuzu 55 (LE1) had serious issues hence the change to the LE2 engine. Be intersested if the head gasket is the problem. If you are going to change it remember to use new head bolts as they are a stretch bolt and can only be used once.

You or someone else will curse if you put nuts on the inside. If you ever have to remove the ports for repair or resealing you will either have to remove/modify the internal fitout or grind the heads off the outside. Having had to remove windows and ports in the past that have been secured inside its a nightmare As has been mentioned if someone wants to get in your boat they will.

Sure was

The isuzu 35 does not have any head gasket issues. Sounds to me like a coolant leak which will affect the calorifier circuit first when the level gets low. A cooling system pressure test should reveal any leaks. That would be my first test before any thing else.

Any one know of a source for free software to produce wiring /circuit diagrams/schematics. Thanks

Yes its possible. Had one on my last boat. As has been mentioned it needs to be kept warm 24/7 via a thermostatic heat mat. These draw about 500w max and are 240 volt. Water does not slosh around due to internal baffles. You will need to account for the extra weight. Any thing between 1/2 to 3/4 ton depending on size. And it needs a good solid base.