Member
Join Date: Jul 2013
Posts: 1
SC
07-10-13, 03:13 PM
#1
Briggs & Stratton 18 hp runaway
Briggs & Stratton 18 hp twin
Model 422777
Type 128101
Engine on riding mower was leaking oil badly. I replaced the PTO side seal, oil pump seal, sump gasket, and two head gaskets. Engine started on first try, but will not throttle down--runs wide open. What could I have done to make this happen and how do I fix it?
Model 422777
Type 128101
Engine on riding mower was leaking oil badly. I replaced the PTO side seal, oil pump seal, sump gasket, and two head gaskets. Engine started on first try, but will not throttle down--runs wide open. What could I have done to make this happen and how do I fix it?
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Banned. Rule And/Or Policy Violation
Join Date: Apr 2013
Posts: 4,297
VA
07-10-13, 03:44 PM
#2
Look at the throttle linkage and see if it's moving properly.
100% sure you installed the governor spring in the right hole and did not bend or bind it?
100% sure you installed the governor spring in the right hole and did not bend or bind it?
Forum Topic Moderator
Join Date: Jul 2001
Posts: 16,570
GA
07-10-13, 04:12 PM
#3
Also, when you had the sump cover off, if the governor gear assembly shifts out of place while you put the cover on, it will not work. You might have to pull it back off if you can find no problem with the throttle or linkage.
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God bless!
