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Ive just bought a boat with a 2004 40 hp J50PLSRS outboard which has a gearbox leak and as yet I have no service manual for it. Firstly does the bearing housing come out of the casing easily as I suspect the o ring is the problem and secondly where do I disconnect the gear shift to enable me to remove the lower leg so I can check the upper seals and water pump, thanks Jeff
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The bearing housing should slide right out, depends on the condition of the lower unit. Heat may be required. -
gear shift linkage
Can you tell me where the gear shift linkage splits so I can drop the lower leg, thanks, JeffComment
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Disconnect it where connects to shift linkage just below front of engine.Comment
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Shift linkage
I had a look and it seems to be inaccessible. Does the lower engine cover have to be removed to get to it ?Comment
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Thanks, possibly I'm barking up the wrong tree here as this is my first Johnson it may be normal for it. Whats happening is that quite a substantial amount of oil is leaking out of the prop area after parking up from a run. This never happened with my Yamaha and Honda O/B's and I am now of the opinion that possibly the engine is being over oiled by the fuel / oil pump which would give the symptoms I described but maybe its something that I will have to live with or possibly I can override the automatic system and try mixing fuel / oil manually to verify this. I believe this is possible but I dont know how to achieve it. As I said I'm not a 2 stroke virgin but this problem is new to me. If you can tell me how to get the unit to operate manually without the warnings / alarms going off I would appreciate it then I will test it by manually mixing fuel / oil.Originally posted by boats.net View PostComment
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To my knowledge there is no way to test the oil output. There is a premix kit available for your motor.
5007422 KIT,PREMIX PMP&LMT $341.52Comment
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Thanks, I will monitor things for a while before I do anything furtherComment
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