I'm buying a 53 Jubilee. When increasing throttle it seems like there is a spring that is moving the throttle back to
slow speed. I cannot move the throttle handle to fast speed as it just moves back. It will stay at slow speed and
runs perfect. Is that normal operation? Thanks
 
(quoted from post at 09:59:47 05/23/17) I'm buying a 53 Jubilee. When increasing throttle it seems like there is a spring that is moving the throttle back to
slow speed. I cannot move the throttle handle to fast speed as it just moves back. It will stay at slow speed and
runs perfect. Is that normal operation? Thanks
ounds as though you may be missing the governor compensation spring that attaches to bottom of battery tray (probably rusted away).
 
Had to tighten the tension on the linkage, spider looking pivot, between battery tray and air cleaner.
 
The more you move the throttle lever towards faster rpm's, the more tension the linkage puts on the governor spring. When you get near full throttle the tension on the governor spring is considerable, and if not compensated for can pull the throttle lever back down. Different engines have different ways of compensating for this. As stated earlier, on the jubilee it is a tension spider and friction washer.
 
(quoted from post at 12:35:06 05/23/17) The more you move the throttle lever towards faster rpm's, the more tension the linkage puts on the governor spring. When you get near full throttle the tension on the governor spring is considerable, and if not compensated for can pull the throttle lever back down. Different engines have different ways of compensating for this. As stated earlier, on the jubilee it is a tension spider and friction washer.
.........and the governor compensation spring!
 
As JMOR eluded to, there should be a spring from the throttle bell crank to the bottom of the battery box ,right hand side.
 
(quoted from post at 19:52:32 05/23/17) As JMOR eluded to, there should be a spring from the throttle bell crank to the bottom of the battery box ,right hand side.

Compensating spring, part #20. "Spider" #14, friction washer #22. Definitely not correct operation.
All available from our hosts here at YT. :)

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