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Conference wahoo::fishing

Title:	Fishing Notes- Archived
Notice:	See note 555.1 for a keyword directory of this conference
Moderator:	DONMAC::MACINTYRE

Created:	Fri Feb 14 1986
Last Modified:	Fri Sep 20 1991
Last Successful Update:	Fri Jun 06 1997
Number of topics:	1660
Total number of notes:	20970

1225.0. "Need Manual For 83, 3hp Johnson OB" by TRACTR::DOWNS () Wed Aug 23 1989 09:09

    I looking for someone who would have an owners manual for a 1983,
    3 hp Johnson out board. I've acquired one without the manual and
    thought I might be able to photocopy someone's. One of the reasons
    why I need a manual is that I don't know if the water pump is working
    correctly and thought that the manual would provide with some type
    of easy check.Maybe someone out there who has the same motor can
    help me. My motor runs fine but when I look out at the lower back
    of the unit (where you would normally is water spraying out) I don't
    notice any kind of water spray. Does this mean the water pump is
    not functioninng? When I put my hand near where I expect the water
    exit ports to be, I can feel a slight spray and my hand appears
    get water droplets forming on it but no significant volume of water.
    The motor doesn't seem to overheat, so I'm not sure if everything
    is normal. I always thought that your suppose to see water spraying
    out of the back, thus indicating a proper functioning water pump.
    Before I got the motor, it had sat in a garage for a few years,
    so perhaps this may have screwed up the seals on the water pump.
    If you could help me with either a manual or some info I'd appreciate
    it. Thanks!
     
    Bill Downs

T.R	Title	User	Personal Name	Date	Lines
1225.1	if it's not hot it's probably OK	HPSCAD::WHITMAN	Acid rain burns my BASS	`Thu Aug 24 1989 10:21`	22
	Bill, I don't have the same engine, but I do have a 2hp Evinrude. I'm pretty sure it's the same basic engine it's easy enough to take apart & get back together. I found that mounted on a boat I cannot really tell if the water is flowing like it's supposed to or not, but if I set it up so that the motor is just stuck in a bucket with the water intake covered it throws plenty of water out the exhaust port (no tell-tale on this little engine). I can copy my manual if you like. The pump is just a small impeller keyed onto the drive shaft, a tube runs from the output of the pump to the power head, makes one quick pass through the power head and dumps into the exhaust chamber. There is a gasket ($4) between the head and the exhaust port which will tear if you get that far in your disassembly. If you do take it apart, be sure to align the pickup tube back into the pump before you bolt the lower unit back on. I didn't the first time and it only took about 30 sec to realize something was wrong. That sucker got HOT in a hurry. If you live near a good-sized library, there are CHILTON's type books available (put out by Howard SAMS I think) which are available as well. I know that the Worcester, Ma. library has them. Al
1225.2	I could use the info!	TRACTR::DOWNS		`Fri Aug 25 1989 12:02`	7
	Ref .1 Al, I would like a copy of your manual. I haven't tried that shallow run on the motor but I thought I had my hand over the exhaust port. While running it had little if any water coming out of it, perhaps the manual will help me understand it more completely. My mailing address is MKO1/1K13. Thanks again!
1225.3	Look at the thermostat first	DECWET::HELSEL	Legitimate sporting purpose	`Fri Aug 25 1989 13:08`	16
	Here's my tip for the day. I had a 6 hp Evinrude from the mid-sixties. I believe this is the same basic engine as the three only with 2 cylinders. Anyway, my water pump seemed to be dead. When i went to remove the lower unit, I found that the screws on the shaft were rotted. Making a long story short, I finally go at the water pump and found that it was fine. Still no water pumped. (And as .1 said the best way to test water flow is to use a saw horse and a trash barrel or something). I finally worked my way up to the power head and found that the thermostat was corroded. They cost about 10 bucks, but since I was living in FL at the time, I just chucked mine. Worked great. Probably still does wherever it is. /brett
1225.4	check library for manuals	CSC32::G_ROBERTS		`Fri Sep 01 1989 13:04`	10
	Yea, check that thermostat. That $8 item caused me a whole season of aggrivation. It was stuck in a wide open position. In the warm water lakes around here the motor ran great. When I would go up to the mountains, plugs would foul in no time. Took me a while to track it down to the thermostat. The engine was never getting to operating temps in 30-40 degree water and fouled the plugs left and right. I had the same request for a manual too. I found losts of good ones at our local library.