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Briggs&Stratton model 191702 Type 0666-02 Code 74120412 starting problem


rivale's Avatar
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10-05-12, 01:38 PM   #1  
Briggs&Stratton model 191702 Type 0666-02 Code 74120412 starting problem

I acquired an old B&S motor who starts but after a few seconds stop working.
When I manually push the governor arm to the right position the motor continues working.

I assume there may be a faulty connection between the governor and the carburetor .

The motor is a Briggs&Stratton model 191702 Type 0666-02 Code 74120412 .

Can anyone help me to fix this problem or help me with a diagram of the service manual ?

 
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10-06-12, 01:27 AM   #2  
Does the engine rev up to higher than idle when you start it, or can you rev it up by the throttle control?


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10-06-12, 05:52 AM   #3  
When starting with the throttle control in max position the motor goes to about 70% of his max rpm for about 5 secs, then he stops unless I'm fast enough to push the governor arm max to he right (away from the carburetor ).
In that position I can use the machine but he never gets his max power .

 
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10-07-12, 10:45 AM   #4  
I would suspect and ensure you have good fuel and flow before suspecting the governor.
Probably the quickest and easiest would be to have some fuel in a small container and nurse the carb with a dribble of fuel when it begins to die. If it comes back to life for a bit then you likely have a fuel flow issue either to the carb or within the carb itself.

 
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10-07-12, 09:42 PM   #5  
The fuel flow is OK, because when I keep the connection with the governor in the right side direction the motor continues running but with a little bit reduced power.
But in connections between carb and gov do have usage (loosely connections) and maybe they are not correctly connected .
I obtained the machine from a scrap yard asis .
This is the reason why I asked for a diagram or picture of the connections between carb and gov .

 
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10-08-12, 01:02 AM   #6  
Even if the connection/linkage is completely gone, it doesn't kill the engine. Something else is wrong. The linkage may not be correct, but the governor is the last place to look most times. There is a wire linkage that connects the throttle to the governor and if you moving the governor arm moves the throttle in the carb, then it is connected. You said it runs with reduced power when pushed to the right. Moving it to the right brings it to full throttle and the engine should race at over 4000, maybe even 5000 rpm, not "reduced power". This is why we think it's a fuel problem. Is the choke opening?


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

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