Vanguard 7.5 138432-0035-E1 oil guard module help

[Blownvette]

I have a B&S Vanguard 7.5 model number 138432-0035-E1 on an aerator and it dies after running under load for a shot time (1-2 minutes). We have bypassed the oil guard module and now runs without stalling under load, but can’t find a wiring diagram to see if that is the issue or if there is another part in the system that could be problematic. Unfortunately the module is over $130.00. Any insight or recommendations are warmly welcomed.

 

[bertsmobile1]

No, the oil guard is the problem
If it will idle all day without problem.
Try adding 250 ml more oil.
If the oil level is a little low , when the engine starts running full speed the slinger tosses oil everywhere so the level in the sump drops a little, just enough to trip the switch

 

[Blownvette]

Thanks! Yes it starts very easily and idles fine. When it is run under load it dies and if it is hot it may not restart for a while. Will put it together and report back.

 

[Blownvette]

Also where would I find a copy of the wiring instructions and service manual? an internet search only showed starting instructions and parts diagrams.