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Repower of a 6512.5 - need help with wire connection

simplicity 6512.5 repower briggs and stratton

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#1 JPFever OFFLINE  

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Posted April 07, 2015 - 06:56 PM

My original engine has failed after 25 years of use.  I have decided to repower my SImplicity with a newer Briggs engine.  The new engine is a Model: 49T877 Type: 0006G1.  What I need help with is what wires from the original harness connect to the new engine harness.

 

From Tractor harness:

 

Gray - Same connector with Red/White - Originally connected to serrator

Red/White - Same connector with Gray - Originally connected to serrator

 

red/yellow - to engine block

 

Black/white - to coil

 

On new engine

 

Black/gray - to coil

 

gray - to fuel pump

 

red with red jumper - to voltage regulator

 

Any idea how to hook everything up?  Mowing season is right around the corner.

 

Thanks

 

Attached Thumbnails

  • from tractor.jpg
  • from engine.jpg


#2 jms180 ONLINE  

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Posted April 08, 2015 - 07:14 AM

I will take a go at this

1- alternator part number 592830 should have 2 wires going into a yellow connector that connect to voltage regulator 845907

2- .wire from voltage regulator to battery needs to be fused

3 - fuel shut of solenoid part number 798779 should have 12 volts when start switch is in on position

4- Coil should have a kill wire that stops engine when connected to ground through safety switches and start switch.do not apply 12 volts to coil wire.



#3 crittersf1 OFFLINE  

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Posted April 08, 2015 - 08:07 AM

:welcometogttalk: An Ohm meter will go a long way.


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#4 JPFever OFFLINE  

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Posted April 08, 2015 - 05:00 PM

I will take a go at this
1- alternator part number 592830 should have 2 wires going into a yellow connector that connect to voltage regulator 845907
2- .wire from voltage regulator to battery needs to be fused
3 - fuel shut of solenoid part number 798779 should have 12 volts when start switch is in on position
4- Coil should have a kill wire that stops engine when connected to ground through safety switches and start switch.do not apply 12 volts to coil wire.


1- correct have this connection
2- from voltage regulator (engine harness]: red wire w/jumper fused to where?
3- fuel shut off will have black/white wire connected to gray (12volts when switch is on)
4- coil (black wire on engine harness) will have red/yellow wire as kill wire.

From tractor harness this leaves me with 2 wires that may or may not need connection.
In the same connector with a red wire (12volts when switch is on) and gray wire (0 volts on or off) which do one hooks to the voltage regulator (red wire with jumper)

#5 jms180 ONLINE  

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Posted April 08, 2015 - 07:51 PM

PD_0071_500_845907.jpg

the red wire from voltage regulator connects to positive on battery may go through the switch some do . it is fused in case of a short circuit in the charging circuit. Could be fused before start switch on B terminal. The case of the voltage regulator in negative or ground.


Edited by jms180, April 08, 2015 - 08:02 PM.






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