Long story short...the throttle plate on my carb stays closed at all times. It appears a spring is missing or something.
Long story - My brother in law is our default mechanic who decided the carb kit was needed because my SV600 would not turn over. It will crank, but not start. Carb kit came in and I can't get my brother in law to call me back. As a result, I'm trying to install the new carb. Upon carb installation, i found something other than the carb is causing the throttle to stay closed. There very well could be a completely different issue.
I have attached a few pictures for what it's worth.
Do you have the throttle control in the run position? Also, see what happens when you put your throttle control to the "choke" position and see if the choke butterfly closes.
#3
EngineMan
Looking at the photo's I can't see the governor spring, but then, I am old and my eye's are no longer good..!.
Do you have the throttle control in the run position? Also, see what happens when you put your throttle control to the "choke" position and see if the choke butterfly closes.
The throttle plate stays closed even when I move the throttle lever up and down. When I push the throttle lever to the choke position, it closes the choke plate.
The rod connecting to the throttle plate seems like it's not attached properly or is missing something....
The governor spring is connected under the speed control bracket. Everything shown in the parts diagram is on my lawn mower.
I didn't watch my brother in law remove the old carb...so I didn't pay attention to how the linkages were removed...or how they were connected prior to removal.
#8
EngineMan
Is throttle linkage (e) fitted to governor lever (b)...?
Actually there "is" a spring on the throttle linkage. This spring is to keep play out of between the carb and the governor arm for smoother running.
Try moving the governor arm by hand to see if it moves freely. You should be able to grab the throttle linkage (closest to the engine) and it should move back and forth freely. If it doesn't, find out what it is hanging up on. When doing this, have your throttle control at "low" speed. When things are correct, and you move your throttle control to fast (or choke) you should feel some resistance when trying to move the throttle linkage. This resistance is your governor spring doing its job.
#10
EngineMan
There is a spring on the throttle rod in the photo 1
One detail I had mistaken - the throttle is staying open, not closed.
I attached a few more pictures showing the linkages @ low throttle, choke, full throttle, and back to low throttle.
The governor arm moves freely, but from what I see it should move back to close the throttle & it doesn't it. But, even when I move the throttle lever from low to high to low - the linkage doesn't move.
One picture I added shows the spring on the throttle linkage.
Attachments
#12
EngineMan
"One detail I had mistaken - the throttle is staying open, not closed. "
Now that we are sucking the right tit...! check the governor, is it working with you..? one of the jobs for the governor is when the engine is running it will try and close the throttle.
When the engine is "not" running and you move the throttle control to fast, the throttle linkage should move to full open.
When you move the throttle control to slow, the throttle linkage won't necessarily go to full close unless the engine is running which activates the governor to slow the engine speed.
