Kohler K91 has zero throttle response when engine is running

[DAXEII 4]

I have a RJ 58 with Kohler K91 that has zero throttle response when the engine is running?  When the engine is not running and the throttle cable is moved then everything seems to be working?  The governor arm moves back and fourth opening and closing the carburetor.  There is a spring attached on the throttle cable disc and the governor arm.  Maybe there is another spring that needs to be connected or I am thinking something is wrong with the governor on the inside?  When I set the the governor arm cross shaft it stops both directions so that isn't broke on the inside.  I have the linkage from the governor arm to the carburetor hooked up.  Obviously I don't have something right and I am just looking for some ideas!!  Something so simple but it has me throwing my hands up in the air!!! LOL

Edited April 23, 2019 by DAXEII

[ebinmaine 71,105]

Maybe the governor is physically working but the carb isn't?

When was it last cleaned up and degunckified?

 

[Achto 28,939]

Is your governor arm set right on the shaft?

 

Loosen the pinch bolt on the arm, turn the shaft all the way counter clock wise, ( I usually clamp a small vise grip on the shaft and allow its weight to hold the shaft full CCW), turn the gov arm full CCW, (throttle should be wide open at this pint), and tighten the pinch bolt.

 

If the gov does not work properly after this adjustment you may have an internal issue with the fly weights. 

Edited April 23, 2019 by Achto

[wallfish 17,610]

Set the governor per the Kohler manual. (with lock bolt loose, rotate the shaft ccw all the way. Move the arm ccw all the way and lock the bolt.) when you connect the throttle cable to the disk, the disk should be rotated ccw so it is engaging the spring. It is the spring which transfers the needed tension from the disk to the arm which opens the butterfly on the carb. If the spring is broken or not assembled properly it will not transfer the required tension from the disk to the arm.

Both ends of the throttle cable conduit need to be anchored or it will just slide on the cable when operating the knob or lever.

Edited April 23, 2019 by wallfish

[gwest_ca-(File Mod) 11,282]

You realize the governor tries to reduce rpm and the faster the engine runs the more pressure it develops to reduce rpm.

The throttle cable pulls on the spring and tries to increase rpm. The spring is the link between the throttle cable and the governor arm. As the throttle cable is advanced the spring pressure is increased on the governor arm.

Those two pressures should always be the same resulting in the rpm you end up with.

 

The casing on the throttle cable can slip in it's clamp which reduces spring pressure and rpm.

The governor arm can slip on the shaft at the clamp if the arm metal is stretched around the shaft. Sometimes you need to remove the arm and increase the slot width so it will clamp tighter.

 

Garry

 

 

 

 

[DAXEII 4]

17 hours ago, ebinmaine said:

Maybe the governor is physically working but the carb isn't?

When was it last cleaned up and degunckified?

 

 The carb is a new one.  I read somewhere that the new carb was already set at the factory?

[DAXEII 4]

15 hours ago, Achto said:

Is your governor arm set right on the shaft?

 

Loosen the pinch bolt on the arm, turn the shaft all the way counter clock wise, ( I usually clamp a small vise grip on the shaft and allow its weight to hold the shaft full CCW), turn the gov arm full CCW, (throttle should be wide open at this pint), and tighten the pinch bolt.

 

If the gov does not work properly after this adjustment you may have an internal issue with the fly weights. 

Yes I did set the governor arm this way.  When I move the throttle to speed up or slow down nothing happens?  The cable is clamped so it won't slip.  I read another reply about rotating the disc maybe that is where my problem is?  I was just trying different holes with out rotating the disc.

[DAXEII 4]

15 hours ago, wallfish said:

Set the governor per the Kohler manual. (with lock bolt loose, rotate the shaft ccw all the way. Move the arm ccw all the way and lock the bolt.) when you connect the throttle cable to the disk, the disk should be rotated ccw so it is engaging the spring. It is the spring which transfers the needed tension from the disk to the arm which opens the butterfly on the carb. If the spring is broken or not assembled properly it will not transfer the required tension from the disk to the arm.

Both ends of the throttle cable conduit need to be anchored or it will just slide on the cable when operating the knob or lever.

ok I did set the governor this way and the throttle cable is anchored but I did not rotate the disc.  I just tried a couple different holes and nothing helped it.  I will try rotating the disc ccw but, when the engine is not running the arm moves like it should to open and close the carburetor??  Thanks for the response!!

[DAXEII 4]

15 hours ago, gwest_ca said:

You realize the governor tries to reduce rpm and the faster the engine runs the more pressure it develops to reduce rpm.

The throttle cable pulls on the spring and tries to increase rpm. The spring is the link between the throttle cable and the governor arm. As the throttle cable is advanced the spring pressure is increased on the governor arm.

Those two pressures should always be the same resulting in the rpm you end up with.

 

The casing on the throttle cable can slip in it's clamp which reduces spring pressure and rpm.

The governor arm can slip on the shaft at the clamp if the arm metal is stretched around the shaft. Sometimes you need to remove the arm and increase the slot width so it will clamp tighter.

 

Garry

 

 

 

 

Thanks for the response after reading the comments I think and hope my problem in the disc which the spring is attached to.  so hopefully once I rotate the disc it will take care of the problem!?!?!  I probably don't have the throttle cable and disc hooked up right.  Everything with the governor arm and the cross shaft seem to be doing what it is supposed to do?

[DAXEII 4]

Thanks for all the input....rotated the disc ccw to give some tension and now I have throttle working!!  Thanks again for the help!!