I have a 1984 30hp Johnson long shaft on a pontoon boat. It was out of the water for about 3 years.
I put muffs on with the garden hose and started it. Ran fine. Peed fine.
In the water it went. Started right up, idled fine and the tell tale pee stream was good. Accelerated fine and ran great for about 5 minutes at 1/2 throttle.
When idling back to dock an alarm came on continuously from the shifter console. My guess was overheat alarm. I let it sit at the dock for an hour or so.
It fired right up, idled fine and was peeing. After about 5 minutes running the pee was intermittent, then stopped followed by steam and the overheat alarm. I turned it off, waited a few minutes and restarted it. The tell tale pee was there then went intermittent, stopped, steamed.
I know the first thing you will say is to replace the impeller. BUT. What else can I look for ? I have to pay someone to put the boat in and take it out of the water.
Can I easily pull the lower unit to change the impeller while it is in the water? I want to know how far the lower unit must extend from the 'upper unit' to remove it. I can turn around the pontoon and tilt the motor up but the shore is there and is all muck so standing there would be like standing in quicksand (inland Michigan lake, all muck bottom). If the lower unit only has to come off a few inches before removal, I can probably do it. If the lower unit (long shaft outboard) has to slide off a couple feet, I think I'm screwed...
Any input would be helpful.
PS before the boat was put in the water I replaced the rubber pee tube from the powerhead and know for sure the output device that squirts the water is fine, no obstructions. It does pee well for a few minutes before getting prostrate trouble ....
Danford1
I put muffs on with the garden hose and started it. Ran fine. Peed fine.
In the water it went. Started right up, idled fine and the tell tale pee stream was good. Accelerated fine and ran great for about 5 minutes at 1/2 throttle.
When idling back to dock an alarm came on continuously from the shifter console. My guess was overheat alarm. I let it sit at the dock for an hour or so.
It fired right up, idled fine and was peeing. After about 5 minutes running the pee was intermittent, then stopped followed by steam and the overheat alarm. I turned it off, waited a few minutes and restarted it. The tell tale pee was there then went intermittent, stopped, steamed.
I know the first thing you will say is to replace the impeller. BUT. What else can I look for ? I have to pay someone to put the boat in and take it out of the water.
Can I easily pull the lower unit to change the impeller while it is in the water? I want to know how far the lower unit must extend from the 'upper unit' to remove it. I can turn around the pontoon and tilt the motor up but the shore is there and is all muck so standing there would be like standing in quicksand (inland Michigan lake, all muck bottom). If the lower unit only has to come off a few inches before removal, I can probably do it. If the lower unit (long shaft outboard) has to slide off a couple feet, I think I'm screwed...
Any input would be helpful.
PS before the boat was put in the water I replaced the rubber pee tube from the powerhead and know for sure the output device that squirts the water is fine, no obstructions. It does pee well for a few minutes before getting prostrate trouble ....
Danford1
