Coleman powermate 4000 watt generator w/ B&S 8hp engine circa 1986

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  #1  
Old 11-02-11, 07:42 PM
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Coleman powermate 4000 watt generator w/ B&S 8hp engine circa 1986

I purchased this generator new in 1986 and it has run faithfully until recently. It appears that something is missing IE: a spring of some form from the speed control so that I can not control the speed. So the generator runs at a speed that produces 140/280 volts. What I need to know is where I can get pictures and parts lists so I can repair and control the speed. Because of this I can not get maximum wattage from this machine as the governor does not increase the speed when an additional load is applied. I currently have this jury rigged so I can use it during the present power outage here in CT. I have searched multiple websites to no avail and I do not want to purchase a new machine.
 
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Old 11-02-11, 09:12 PM
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Originally Posted by bigbanjoe View Post
I purchased this generator new in 1986 and it has run faithfully until recently. It appears that something is missing IE: a spring of some form from the speed control so that I can not control the speed. So the generator runs at a speed that produces 140/280 volts. What I need to know is where I can get pictures and parts lists so I can repair and control the speed. Because of this I can not get maximum wattage from this machine as the governor does not increase the speed when an additional load is applied. I currently have this jury rigged so I can use it during the present power outage here in CT. I have searched multiple websites to no avail and I do not want to purchase a new machine.

What is the model # and Type # on the engine? You can use the model # and type # and got to the B&S website to see what is missing. Post Model# and Type # for all to see. Please.
 
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Old 11-03-11, 06:12 AM
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You may also need the code number for some parts so make a note of this as well when you look for and find the model and type numbers off the engine's blower shroud. Sounds like you have a broken governor spring, which, in all Briggs & Stratton lookups, will be reference # 209.
 
  #4  
Old 11-06-12, 09:03 AM
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Same Issue

i have the same Coleman Powermate model PM52-4000. my governor will not increase the engine speed. i can watch the linkage not move in response to a load increase. all the springs are present and accounted for. i can move it by hand to increase the speed. my Tecumseh engine label reads HM80 155465N (B) 3244A. it ran perfectly for 3 days during the Derecho last summer. i have the no load engine rpm set by tach at 3600. when a load is applied now the Hz drops from 60 to 54 +/- and the rpms drop accordingly. governor gear inside engine issue? i have pics if that would help. the governor is very stiff to move but it move crisply without binding. thanks for any assistance.
 
  #5  
Old 11-06-12, 09:48 AM
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Sounds like the tension on the static tension governor spring needs to be increased. There is probably an adjustment nut to tighten for this.
 
  #6  
Old 06-13-14, 09:41 AM
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I have just fixed an engine with this prob.
Loosen clamp on governor shaft;turn shaft to idle(see my other post) clamp tightly. There is a LOT of vibration on this engine and over time square hole gets rounded and loose. GL
 
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