chrysler 20hp autolectric 204ha cranks slow what would cause this?

[moparnut]

It turns over real slow. I have cleaned electric connections, good compression, 120 each, cranks fine with plugs out ( no resistance) what should I check next?? Thanks

 

[gm280]

I would do two things. First make absolutely sure your battery is fully charged. Second, check the voltage at the starter when cranking to see if you are getting the proper voltage there. If that voltage is dropped off a lot, you either have some wiring problems (corrosion in the wires from the battery) or the starter relay/solenoid is bad. Could also be the starter needs serviced with fresh bearings and brushes as well. I would expect there to be around 12 volts (or there about) at the starter when cranking. If not, you have to check where that voltage has gone. JMHO!

 

[moparnut]

Thanks for the response. What gets me is it doesn't have a regular starter motor. Its the starter-generator with the light on top. So I have fully charged battery, Jumped right to power in on starter, still slow. I cleaned the brushes (4) If they are bad would that be a cause? there seems to be an interlock switch and a Diode? circuit breaker? could they have any baring non this? Thanks

 

[jerryjerry05]

Any idea of the year??
Possible slow turning could be the things GM280 suggested.
Also check the grounds and connections on the cable.
The lower unit the bearings could be seizing and making it turn slow??
You using a starting battery or deep cycle?

 

[moparnut]

Jerry, good morning. I believe it is a 1970 204ha . I ran a jumper cable from a running car hooked it to the cables slow turn over. then touched directly to the starter same slowness so I think the forward wiring is ok. Took plugs out cranked over in gear forward reverse moved the water in bucket smoothly with no more effort than when in natural. ( I think the switch that is supposed to not let me do this might be bad.) Would a faulty switch have any effect? I found one post from 2011 were a member had the exact problem got it fixed but did not post what that fix was. I did send him a message but he has not been on this site since then.. Thanks Geoff

 

[jerryjerry05]

A jumper from a car isn't any where's near enough power to turn an outboard.
​You need to hook a battery direct to the cables.
Most jumper cables use a 10g or smaller wire.
The more expensive the thicker the wire.
The cables are for feeding juice to a weak battery and recharging it.
To get a direct jump you need at least a 4g or better. and good clamps.
0,2, or 4g is best.

Get a good hot battery and hook to the cables.

Home Depot sells a good set.$20
In a pinch I use a #4 set from a junk outboard.
Then bolt it together with the cables on the motor.

 

[RDamon5]

I’m having the same issue, did you ever resolve it?

 

[GA_Boater]

I’m having the same issue, did you ever resolve it?

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