Simplex 10-12 oil pump

Author Message   Liam Hickey Visitor Posted on Friday, February 27, 2009 - 05:57 am:        hi there i have a simplex early simplex ten hp twin and i was wondering if anyone coulkd explain to me how the oil pump pressure is adjusted? thankyou!   laurie_d New member Username: laurie_d Post Number: 2 Registered: 10-2009 Posted on Thursday, October 15, 2009 - 03:42 am:        Hi Liam, I have the same model motor. The oil pressue is adjusted by the long screw at the bottom (a 'relief valve'). Loosen the lock nut and turn he screw upwards to incease pressure. Correct pressure is 20 to 25 psi. I've just joined this site so hope this helps. I'm looking for points for the Wyco magneto - any suggestions?

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