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Hot!Coleman powerhouse 8000

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cll
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2019/08/28 19:26:15 (permalink)
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Coleman powerhouse 8000

I'm trying to get this old generator going for someone. Model no. PM0508622, serial no. 76990125. I need a wiring diagram so I can bypass the old keyswitch and convert to toggles and pushbutton. I found the hot, ground, and solenoid wires, but there are two more I'm not sure of. One goes to a can on the carb; maybe a cutoff? The other dives into the top of the engine shroud; maybe coil power, if it even uses a coil, or kill switch?
Also need to find a replacement solenoid for the #0036079 one. Thanks for any help. Chris

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    Roy
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    Re: Coleman powerhouse 8000 2019/08/28 20:28:59 (permalink)
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    The can on the carb is probably an anti afterfire solenoid, it shuuts fuel off to the mainjet on shutdown preventing a loud bang. The other one will be the kill wire to the magneto, DO NOT feed battery power to it.
    cll
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    Re: Coleman powerhouse 8000 2019/08/29 12:04:00 (permalink)
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    Thanks Roy. If you were wiring this up with toggle switches how would you deal with the carb wire and kill wire to get it to start and stop? Is that carb unit really necessary? I found a replacement solenoid   which I'll use a momentary contact pushbutton for to crank it.
                    Thanks,      Chris
    AVB
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    Re: Coleman powerhouse 8000 2019/09/02 08:01:32 (permalink)
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    cll
    Hi Roy, If using toggle switches, how would you wire them to work the carb unit and the kill wire? Thanks, Chris

    I emailed Powermate for a wiring diagram on this model.
     
    I suspect that being a generator they are applying 12 vdc to the fuel solenoid during shut down which is reverse of most other engine application. This requires a fuel solenoid that extends the pin when power is applied vs the more common retraction mode. For generator mode they would source the generator 12 v alternator output and not the battery during shut down. This way the fuel is powered back down as the generator completes the shutdown; otherwise, it would be constantly draining the battery. Of course they may have the fuel being powered during running since it has a battery but this would still drain the battery if keyswitch left on after it runs out of fuel so I would think they would not used this method.
     
    If Powermate can provide a wiring diagram then I can figure out how they wired the keyswitch and if there is a way to wire in a DPDT with a monetary position or a DPDT with center off that can be used to start the engine too.
    post edited by AVB - 2019/09/02 08:04:23
    AVB
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    Re: Coleman powerhouse 8000 2019/09/02 12:49:42 (permalink)
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    I got a reply back. Powermate was partially sold out to Generac and they don't have the wiring diagram for that old generator. Basically whoever repairs one these is on their own.
     
    Without my hands on the unit I can't be of any further help.
    cll
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    Re: Coleman powerhouse 8000 2019/09/02 15:03:27 (permalink)
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    Yeah, I got the same reply from Powermate. They no longer have anything on this model. I can certainly ground the kill wire for shutdown, but not sure if the carb solenoid closes with power or when power is removed. Guess I'm on my own to investigate. Thanks for all the info.
    Chris
    AVB
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    Re: Coleman powerhouse 8000 2019/09/02 16:52:00 (permalink)
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    Kinda easy from here if the engine starts and run then dies when you ground the kill wire. It would means to solenoid is not hot during operation and is only engaged during shutdown. That mean you to find the 12 v wire that powers down as the unit shuts down as fuel solenoid would hold until 6-8 vdc then drops back out.
     
    This how most solenoids and relays works. Takes full rated voltage initially operate the switch over but take less as a holding voltage to keep them at the switch over state...Actually a quite useful property especially with using a momentary voltage to switch a relay over and have it latchup until input line voltage is dropped. I have worked CUB Cadets that operate a relay this way to disengage the PTO in reverse then operator must cycle the PTO switch once again once moving forward again. Cub as since switch over regular switches that provide automatic disengagement and re-engagement. The problem is the regular switches have a much shorter life when compared to high current relays.
    cll
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    Re: Coleman powerhouse 8000 2019/09/13 17:51:11 (permalink)
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    I thought I had all the switches installed to convert this generator from the old keyswitch. The carb solenoid pulls in with power and seals when switched off. But have now found that the two black wires that are mounted on the insulated stud on the engine that then go under the tin shroud to, I would guess, the mag kill terminal are already continuous with ground. What's up with these? Why are there two? There are no prints available from Powermate or Briggs and Stratton for this engine. Thanks for any clues. Chris
    AVB
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    Re: Coleman powerhouse 8000 2019/09/13 20:36:56 (permalink)
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    What is the model and type of the Briggs? Sounds the engine has a stator.
    cll
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    Re: Coleman powerhouse 8000 2019/09/14 10:04:50 (permalink)
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    18hp. I/C Plus v twin. Model# 422447, Type# 1280 02. Thanks.
    Roy
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    Re: Coleman powerhouse 8000 2019/09/14 11:43:51 (permalink)
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    If it is a v-twin the numbers are incorrect, it sounds like an L-head horizontally opposed engine. One wire will definitely be the kill, there will be a second wire from the engine alternator if it has one but that wire shouldn't go to the insulated stud.
    AVB
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    Re: Coleman powerhouse 8000 2019/09/14 12:28:40 (permalink)
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    Yes the number are for an opposed engine. This is a stator rated for 10-16 amps depending the flywheel magnet size. It also require a voltage regulator for the 12-15 VDC output.[Considered 12 VDC]. If you are reading zero ohms from either lead to ground then there is a short to ground. Otherwise if across both leads should be getting near zero but not zero or whatever is the reading with your meters touching each other.
     
    Output voltage for the 10 and 13 amp units should 20VAC or higher. 16 amp it should be 30 VAC or higher. This is across both leads. Don't not connect directly to the battery or you will damage it. Must have a voltage regulator installed.
    cll
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    Re: Coleman powerhouse 8000 2019/09/14 19:22:00 (permalink)
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    Yes, it's probably an opposed twin. Lots of tin around it. This generator has had very little if any time on it. I'm just replacing the bad keyswitch that has no key, with toggle switches and a momentary contact switch. Coming out of the engine are the following: a carb cutoff solenoid that draws back the plunger with power applied; a two into one inline connector that then goes to battery positive via the hot post on the starting solenoid; and two black wires on an insulated post threaded terminal, with a third wire taking off from that to the old keyswitch location. These last two wires I would think are for mag kill function, but when tested were already continous with ground. I took both off the insulated post and each one is still grounded. I've got all the switches mounted and wired up, so I'm really close to having it crank, start and charge, but don't know why there are two black wires instead of one, and both are grounded. No prints are still available for this unit. Any ideas? Thanks.
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