throttle linkage diagram, high revving regardless of throttle cable setting

oldntired55

Active Member
Joined
Jun 17, 2023
Threads
15
Messages
99
  • / throttle linkage diagram, high revving regardless of throttle cable setting
I cannot believe i messed this up. i recently acquired a DLT craftsman with 25 hp v twin. it had been sitting idle with no exhaust pushrods ( someone borrowed them) for about 3 yrs. i removed and carefully cleaned the carb just to be safe... set valve clearances and fired it up... it sounded like it was going too fast...way too fast. i killed it, checked throttle rod to be sure it wasnt binding, and i can feel the governor shaft turn with the linkage being pushed. i might add i had another tractor here with the same carb, taken apart for cleaning... i did not have the same problem with that one. so i ruled out the wrong throttle link rod on the wrong machine. any ideas? should i check and adjust the governor? never had this before, and ive cleaned several of these Nikki carbs. help...a complete diagram of the proper throttle links and choke rod would be helpful,,, my main problem with this machine, is the id tag is faded way beyond reading any numbers.
 

Attachments

  • 446045595_7802041396526413_3335869114533701176_n.jpg
    446045595_7802041396526413_3335869114533701176_n.jpg
    274.5 KB · Views: 5
  • 448314118_507533968270196_4223462610851036633_n.jpg
    448314118_507533968270196_4223462610851036633_n.jpg
    302.4 KB · Views: 4

hlw49

Lawn Addict
Joined
Jul 11, 2021
Threads
43
Messages
1,607
  • / throttle linkage diagram, high revving regardless of throttle cable setting
If this is a Briggs engine the model type and code no is stamped into the valve cover opposite the the fuel pump. This is what is needed.
 

oldntired55

Active Member
Joined
Jun 17, 2023
Threads
15
Messages
99
  • / throttle linkage diagram, high revving regardless of throttle cable setting
I cannot believe i messed this up. i recently acquired a DLT craftsman with 25 hp v twin. it had been sitting idle with no exhaust pushrods ( someone borrowed them) for about 3 yrs. i removed and carefully cleaned the carb just to be safe... set valve clearances and fired it up... it sounded like it was going too fast...way too fast. i killed it, checked throttle rod to be sure it wasnt binding, and i can feel the governor shaft turn with the linkage being pushed. i might add i had another tractor here with the same carb, taken apart for cleaning... i did not have the same problem with that one. so i ruled out the wrong throttle link rod on the wrong machine. any ideas? should i check and adjust the governor? never had this before, and ive cleaned several of these Nikki carbs. help...a complete diagram of the proper throttle links and choke rod would be helpful,,, my main problem with this machine, is the id tag is faded way beyond reading any numbers.
i forgot to list model and code of the engine... model # 445777 type 0129 code 000614YG
 

oldntired55

Active Member
Joined
Jun 17, 2023
Threads
15
Messages
99
  • / throttle linkage diagram, high revving regardless of throttle cable setting
If this is a Briggs engine the model type and code no is stamped into the valve cover opposite the the fuel pump. This is what is needed.
i just added them to my post, thanks
 

Tiger Small Engine

Lawn Addict
Joined
Dec 7, 2022
Threads
2
Messages
1,134
  • / throttle linkage diagram, high revving regardless of throttle cable setting
model # 445777 type 0129 code 000614YG
Start engine and hold the governor linkage to maintain a safe engine speed. Reset governor as needed. If no change then most likely the governor gear took a crap. Remove engine, crack case, replace governor gear, install engine.
 

oldntired55

Active Member
Joined
Jun 17, 2023
Threads
15
Messages
99
  • / throttle linkage diagram, high revving regardless of throttle cable setting
Start engine and hold the governor linkage to maintain a safe engine speed. Reset governor as needed. If no change then most likely the governor gear took a crap. Remove engine, crack case, replace governor gear, install engine.
thank you, thats my next step. on back burner for now..will re post after i tear it down
 

Forest#2

Well-Known Member
Joined
Apr 17, 2022
Threads
0
Messages
463
  • / throttle linkage diagram, high revving regardless of throttle cable setting
To see if the governor on that OHV twin Intek do a static governor adjust but INSTEAD OF rotating the governor shaft in same direction as the governor arm, hole the carb throttle open and TURN THE GOVERNOR SHAFT CCW OR IN THE OPPOSITE DIRECTION.
If the internal engine governor is operating and the governor spring is connected the engine will low idle if the throttle is set to slow speed when the engine is started.
This adjustment is just the opposite of what normal static governor adjustment per the manual but it will let you know if the governor is capable of pulling the throttle to slow speed.
Let us know the results of the above and we can then tell you how to get a governor control for that TWO BARREL NIKKI CARB.
Sometimes a Bubba has been making bend adjustments to the slow idle governor control linkage or even removed some parts.
The Briggs Twin OHV Intek service manual is a good reference at about
$30.
 

hlw49

Lawn Addict
Joined
Jul 11, 2021
Threads
43
Messages
1,607
  • / throttle linkage diagram, high revving regardless of throttle cable setting
If it is the governor hope the shaft the governor works on is not wallowed out in the block.
 

oldntired55

Active Member
Joined
Jun 17, 2023
Threads
15
Messages
99
  • / throttle linkage diagram, high revving regardless of throttle cable setting
To see if the governor on that OHV twin Intek do a static governor adjust but INSTEAD OF rotating the governor shaft in same direction as the governor arm, hole the carb throttle open and TURN THE GOVERNOR SHAFT CCW OR IN THE OPPOSITE DIRECTION.
If the internal engine governor is operating and the governor spring is connected the engine will low idle if the throttle is set to slow speed when the engine is started.
This adjustment is just the opposite of what normal static governor adjustment per the manual but it will let you know if the governor is capable of pulling the throttle to slow speed.
Let us know the results of the above and we can then tell you how to get a governor control for that TWO BARREL NIKKI CARB.
Sometimes a Bubba has been making bend adjustments to the slow idle governor control linkage or even removed some parts.
The Briggs Twin OHV Intek service manual is a good reference at about
$30.
I actually DID do just that, with no change... when it fires, it revs out of control. i have a parts engine,i am pretty sure the gov gear is toast... i just need time to tear the 2 down. but ty for the info!!
 
Top