26 h.p. engine won't throttle down

B

brownfoxx1

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #11

adjusted the govenor.
still runs at full throttle no matter where the throttle is set. like idle.

 

Boobala

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #12

brownfoxx1 said:

adjusted the govenor.
still runs at full throttle no matter where the throttle is set. like idle.

Click to expand...

Sounds to me like the "butterfly" plates aren't closing, you may have to check that the linkage is indeed closing the plates.

 

Boudreaux In Eunice La.

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #13

Yea Boo Boo he might have lost his plate ~!~! Those tiny brass screws come out sometimes...........

Something is going on with his throttle setup somewhere if the plate is OK... Boo pop a link up for his setup...

 

Boobala

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #14

Boudreaux In Eunice La. said:

Yea Boo Boo he might have lost his plate ~!~! Those tiny brass screws come out sometimes...........

Something is going on with his throttle setup somewhere if the plate is OK... Boo pop a link up for his setup...

Click to expand...

Problem is we aren't there to SEE what his linkage looks like, could be the governor springs are in the wrong locations, or missing ...... the earlier video he was sent, shows how to install the springs and linkage, we don't know anything about his carb .. BEFORE his first post.. did he rebuild the carb, did this happen all of a sudden, are all the linkages there an installed right, how much experience with carbs does he have ??? maybe the main jets fell out, I have several cleaning / O/H videos but little on the actual linkages they could be bent, missing, shaft springs broken or missing, ... ???? MORE info & pics would certainly help,

https://docs.google.com/file/d/0B6NaqjIxWV1ySkZjTTA5TGltZEE/edit

https://www.youtube.com/watch?v=U7rvHH0IPPk

https://www.bing.com/videos/search?...C611DADB52060201A05DC611DADB5206&&FORM=VRDGAR

https://www.bing.com/videos/search?...54D0B09125EACFFDDDE654D0B09125EA&&FORM=VDRVRV

https://www.bing.com/videos/search?...9CD463932822646A05E29CD463932822&&FORM=VDRVRV

https://www.bing.com/videos/search?...E10D8D863A9A9CDF18ACE10D8D863A9A&&FORM=VDRVRV

https://www.bing.com/videos/search?...E10D8D863A9A9CDF18ACE10D8D863A9A&&FORM=VDRVRV

BY watching ALL the videos you can learn a great deal about these Nikki carbs ......EACH VIDEO HAS USEFUL INFO !!!!

 

Boudreaux In Eunice La.

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #15

Thanks Boo ............ Yes he can glean some info from those links ............

 

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brownfoxx1

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #16

thats great thanks.lb

 

sgkent

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• Oct 1, 2018 / 26 h.p. engine won't throttle down

• #17

I don't know the engine but can one pull the air cleaner off and with a flashlight, mirror or camera see if the throttle plate is open or closed? If the screws are loose on the throttle plate it can wiggle when open and refuse to close. Also some throttles have springs that pull them so while the throttle may seem like it is moving, all that is moving is tension on the spring. Return springs break too sometimes. I would do all my checking of the throttle plate with the engine off and the key out.

 

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Luffydog

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• Oct 2, 2018 / 26 h.p. engine won't throttle down

• #18

They are also known for the governor spinning around on the governor shaft rod which is made into the block and not repairable. They spin and cut grooves in the shaft then the governor quits or breaks.

 

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roger49

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• Oct 7, 2018 / 26 h.p. engine won't throttle down

• #19

No reply on whether or not you have resolved you issue with the 26 hp running at wot yet. If not here is a method I use to determine whether the governor gear inside the engine is blown. In photo 1 I turned the governor shaft fully counterclockwise and placed a nylon hose clamp over the shaft and positioned it at 12:00 c'clock and put a mark on the case. In photo 2 I rotated the shaft fully clockwise and put a mark on the case in that position. If your shaft rotates to the mark shown in photo 3 the governor gear in the engine is blown and will need to be replaced. Attached are 3 photos , hope this helps.

 

Last edited: Oct 7, 2018