First time poster. Have a Sanli Redback that is missing what I think is the return spring. Might be some bracketry missing as well. The problem is I have not been able to find a photo anywhere on the web showing the proper arrangement. I have attached a couple of photos but would love some advice on whats missing and where it goes? Surely someone out there must have a photo? Sanli and most of the dealers I have spoken to are next to useless.
looking at that choke I think there is a good chance this has been left out in the weather or it has had ethanol fuel in it. I haven't seen the choke butterfly rusted like that before so something has been going on there
looking at that choke I think there is a good chance this has been left out in the weather or it has had ethanol fuel in it. I haven't seen the choke butterfly rusted like that before so something has been going on there
Hi Norm yes that image you looked at was an old engine I left in the rain for scrap. It was just to show that linkage from another motor could be swapped over.
Hi Ausmow, Max and all. It's as max has it in the second pic. The anti oscillation spring is there and in it's correct place. The governor spring ids what's missing and it goes from the back to the loop in the linkage as max has highlighted. It's a fairly light gauge spring as most of them are. Remember that this is a fixed speed machine so you'll have to make your own from another one and stretch or shorten as required to get it revving right. The spring you require is NLA Click the link below for a parts list/
Long time between posts. Thanks to bigted I managed to get the correct spring and got the mower running. Since then it has been a constant battle to get it to rev right. Just when I think I have it nailed it changes as the mower warms up. Adjusting the springs and governor on the sanli seems to a bit of a dark art and a matter of minute adjustments. Any help appreciated.
It's easier if you put a mark on the governor first like in the image below.
Governor Arm Adjustment Procedure (Small Engine / Mower)
As you found out when loosening the governor arm clamp bolt on the governor shaft, the governor system allows very minute rotational adjustment. Small movements of the governor arm can result in noticeable RPM changes once the bolt is retightened.
Adjustment Notes
After repositioning the governor arm and tightening the clamp bolt, engine RPM will change based on how far the arm is rotated.
Because the adjustment range is small, it can be difficult to judge how much movement has occurred.
Recommended Marking Method
To make accurate and repeatable adjustments:
Before loosening the governor arm clamp bolt, use a scribe, small screwdriver, pick, or sharp knife.
Scribe a reference line across the end of the governor shaft and onto the governor arm, or along the side of the governor shaft if the governor arm sits a fair distance down from the end of the shaft.
This reference mark provides a visual indicator of the original position. Note: The metal does not need to be scratched—applying a black marker (texta) first will make the reference line clearly visible.
Benefits
Allows you to clearly see how far the governor arm has been moved.
Makes fine RPM adjustments easier and more controlled.
Provides a reliable reference point for future governor adjustments.
Final Adjustment
After repositioning the governor arm:
Tighten the clamp bolt securely.
Start the engine and verify RPM.
If further adjustment is required, use the reference mark as a baseline for incremental changes.
