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  1. S

    Mariner 40 2 str 2002 Main Telltale weak, small one not running at all

    Found some water in fuel lines so bought new tank dont trust old one not to let in rain.Cleaned carb and engine now runs and starts better. Both telltales running at idle. Small one is warm with little bit of steam but temperature tolerable on my hand. However I now have noticed water coming out...
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    Mariner 40 2 str 2002 Main Telltale weak, small one not running at all

    Using muffs the telltale was quite weak and small one has stopped completely, even when motor is warmed up. Probably need new impeller but what other issues need to be looked at????
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    Gasket replacement.Mariner 40 hp 2 str 2002

    My outboard has a damaged gasket oozing oily residue at the very top of the shaft just under where the covers begin to flare out to form the tray under the power head. The manual does not seem to cover this and only covers lower gear case from water pump down. What gasket is this? How do I...
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    Mariner 402002 2 str ran like a champ after overhauls two days later dead as a doornail?

    hi, Engine had been reluctant to start and running rough, pulled off upper cyl HT lead while it ran and since that made no difference to how badly it was running concluded that a new HT lead was in order. Cleaned carb. replaced both CDM units and HT cables mainly because HTs looked doubtful...
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    2002 40 hp 2 stroke single carb Mariner conks on reducing throttle to idle.

    Hi, Have had lots of reliability issues recently with difficult starting/unwillingness to start, not giving full power. which was put down to carb dirt. Workshop said my tank was clean and fuel clean so cleaned the (single) carb, took loads of money and said it was A1. Next fishing trip took...
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    Importance of carb float settimg on Mariner 40 hp 2 str (2002)?

    Could a badly set float height explain why my(previously owned) outboard has always had a crazy idle speed?? The idle screw has been screwed out to the point that it does not contact the cam follower,so no way to reduce idle speed there. The idle mixture screw will reduce idle speed but that...
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    Carb float height setting for Mariner 40 2002 2 str.

    My Clymer manual says to refer to Table 3 for correct setting however no setting is provided! Can anyone supply the missing info please??
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    Mariner 40 2 str.2002 oil:gas mix?

    I was told originally to use 100:1 however others tell me they prefer .50:1 but noticed this made plugs oily. Newer outboards all seem to use 100:1?
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    Mariner 40 2 str.2002 perfect at low throttle but problems at medium or high.

    Starts and runs perfectly at low throttle,but sluggish or conks on opening up. Gives occasional brief bursts of greater power on opening up, but loses power again almost immediately. Used fuel from last season (I know, but it never seemed to cause a problem before). I have a filter in the fuel...
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    Mariner 40 2str 2002 idle speed

    This outboard makes a slight clunk/crunch when forward is selected. Think maybe idle speed could be lowered a shave?? Can I just give it another half twist out or will I be messing up timing etc.??
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    adjust idle on Mariner 40 2002

    Hi, The idle appears to be set a little high and forward is engaged with a slight crunch. If I lower the idle slightly I hope this will disappear??? Not sure though would this in turn affect timing which would then need to be reset??? Any help appreciated. Sean.
  12. S

    propshaft not engaged into drivesaft properly??? Mariner 40 2002

    hi Replaced O ring and propshaft seals due to lube leaking out through bearing carrier. When I pulled the bearing carrier the propshaft came out also. The cam follower remained in the gearbox so I retrieved it with a long nose pliers and replaced it in the propshaft. I replaced the two...
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    2012 mariner 40 2st gearbox lube leaking from behind prop

    Hi, when I drained the shaft lube and refilled the new oil immediately began seeping out behind the prop. I s there a seal back there that I need to replace??? Thanks.
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