take it apart and find out why the linkage if not changing the throttle speed.. the carb is old style from the 50's and the mag plate cam #40 must rotate to push the cam follower #3
see article on older motors....yours is just newer with beter ignition but it works the same way
see LEroy's comment on the trhottle linkage....
If this twist handle seems hard to twist or to not want to move, the cable may be dry and binding inside, or the timing plate may also be dry and dragging. To test this, removing the end of the cable at the timing plate, now see if the handle will now twist. If not, then the problem is in the cable. You may be able to remove the cable, then get some penetrating oil in to lubricate it.
We are doing some maintenance on our site. Please come back later.
www.leeroysramblings.com
