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My B&S 13HP engine, model # 28M707, is always on high revs, have checked throttle cable and levers and linkages next to engine but can't see problem. can you advise please

My B&S 13HP engine, model # 28M707, is always on high revs, have checked throttle cable and levers and linkages next to engine but can't see problem. can you advise please

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  • 97 Answers

Check you governor spring

Posted on Dec 28, 2013


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Posted on Jan 02, 2017

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SOURCE: John Deere 14SB mower with Kawasaki FC150V series - Throttle adj.

Hello rfbarrett:

From your Description it Sounds like the Plate that is Attached to the Carburetor (that the Throttle cable Attaches to) Thru Shaft (holds and Moves the Throttle Valve) has Loosened and is Simply Turning on the Thru Shaft and Not Moving the Thru Shaft and Throttle Valve at All.
>>You can View a Breakdown/IPL of the Engine and Mower at this Site Addy, and Enter the Model Numbers 14SB and Click Find. Then Select your Model from the Search Results Area. Then Select the Sectional File. Then Select the Section of the Mower you Wish to View Online. *You can Drag the View Windows for Better Viewing.*
Please, Do Not Hesitate, If I Missed Something or you Hit a Snag or this Does Not Correct the Problem, I am Here if You Require More Assistance.
Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Be Happy. Thanks.

Good Luck


jbridger (John)

Posted on May 14, 2009

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SOURCE: Need linkage hookup diagram for Toro Super

Go to and view parts for your model.

Posted on May 19, 2009

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SOURCE: Poulan Lawntractor 13.5HP throttle linkage missing

The easiest thing for you to do is look at another mower that has a single cylinder Briggs at how the linkage is set up. They will all be the same linkage from 12 hp- 20 hp.

Posted on Jul 03, 2009

  • 352 Answers

SOURCE: throttle on 14SZ not working, stays in low


Posted on Sep 09, 2012

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How old is the model 28m707

if you look at the engines code it will be model , type, code. The code is the yy/mm/dd of its production. so 990314 is 14th day of march 1999.
tho it may be yyddmm.

Aug 30, 2014 | Briggs & Stratton Garden

1 Answer

Johnson 115

find the bottom carb , see where the linkage from the remote cable moves the lever on the side of the engine then disconnect the cable from the remotes ! on the bottom carb there should be a screw to adjust the tickover where the linkage meets the carb linkage , turn it in 2 turns then with water attatched to water intake on gearbox turned on start the engine , it mite be slightly high or low pending ! set at 900rpm , rev engine several times back to tickover and if ok then refit throttle cable , cable should be pushing lever against its stop and then when you select forward gear it shouldnt move till you throttle up ! when in water start engine and select forward gear and tickover should be 7 to 800rpm and idle ok if not adjust till ok !

Aug 12, 2014 | Boating

1 Answer

Mercury 90 hp force

on the side of the carbs you will find the throttle linkage and on one of them there should be a screw that touches the linkage and this is where you screw in or out to adjust the tickover ! get engine running and see the linkage move and then hold the revs at 1000 rpm with your remote control box then adjust the screw so it just touches the linkage , pull back the remote lever to neuteral position and the revs should stay at 1000 rpm , then turn screw back so the rpm is at 800 rpm and the engine should then rev up and down and return to 800 rpm ! always run engine with water turned on at the hose flush attachment or in a tub of water or lake etc ! P...

Jun 20, 2013 | Boating

1 Answer

Need to know how to set the throttle so can turn off with cable control instead of having to pull spark plug each time

I need more details to answer this with one statement, but I will give you some solutions based on my experience.

Newer lawnmowers have a dead man lever which will either shut the engine off immediately or stop the blade by the use of a clutch system. If it the dead man lever, it just needs to be released. If the engine has the blade stop, then the throttle cable would control killing the engine. If the mower is really old (>20 years) then the only way is the throttle cable.

To adjust the throttle cable:

Follow the throttle cable down to the engine, it will terminate by the carburetor. There should be a single screw where the cable attaches with a clamp that goes over the cable. Loosen this screw and you can adjust the cable forward or backward to adjust the position (ever model is different based on throttle cable and engine configuration). You can figure the direction out by pulling the lever to the slow speed/off setting and watch the motion of the cable at the carb. If the cable pulls inward then you have to move the cable assemble away from the carb. linkage. This will allow the throttle linkage to pull closed further.

If you pull the air cleaner off, you should be able to see how the throttle linkage and cable interact. There is a ground wire that connects under the linkage, which when shorted out kills the ignition system and the engine turns off. If this wire is not in place or something else is preventing the wiring from shorting out, you will not be able to kill the engine no matter how much you adjust the linkage. If the wire and switch seem to be in the correct place and the throttle linkage is working, but it still doesn't kill the engine, just short the wire out directly to a clean metal surface to verify the condition of the wire.

Nov 19, 2011 | Garden

1 Answer

I have a high rev on my 89 gsxr starts up and revs to 6500-7000.

check throttle cable and linkages for sticking and holding the butterfly throttle plates open and try starting without giving any throttle

Sep 28, 2011 | Motorcycles

1 Answer

10 hp briggs runs at high speed, govenor don't seem to be working

One possible cause for this problem is debris,sticking,or frozen linkage between the governor and the throttle butterfly. Depending on the make and model of your engine it will either be a mechanical governor that has a arm that goes down into the case or a air vane governor that is behind the recoil shroud of the engine. Move all the linkage that connects between the governor and throttle and speed lever to make sure it doesn't bind or sticks. If it does pray a little silicone or wd 40 spray on it to help reduce friction. Also on air vane governors they can become stuck from debris that inhibits it from moving make sure there is nothing in the way of the governor. If all of the linkage is working properly and you still have the issue try adjusting the the fuel mix screws and the high rev. settings on the throttle lever (if equip.).

Jan 29, 2010 | Parks Optical 13.5hp Briggs And Stratton...

1 Answer

1990 chevy vandura 3500 not shutting off and have a high rev that will not kick down

sounds like throttle sticking check cable to throttle linkage & linkage

Aug 30, 2009 | 1990 Chevrolet C3500

1 Answer

Escort 1 6 zetec engine revs high when stationary and tries to run away when driving. Have checked the throttle linkage, and all is moving as it should be. If the throttle is blipped it acts as if it has...

i think the problem is the idle\air control module if you have one take it out and clean it. the idle module works when your vehicle is idleing. A clogged throttle body or intake would cause the module to compensate for the problem by allowing air in and around the throttle body bypassing it. so i think some thing in the intake system is clogged.

Apr 18, 2009 | 1997 Ford Escort

2 Answers

Engine revs to high

You definitly have to check the cable installation/adjustment. Remove the air cleaner and with the engine off, advance the throttle to full open and then let it snap closed. The throttle plate should come completely closed. Also check your linkage to make sure that the progressive linkage is not hanging on the high steps oft the choke linkage. This could also have been affected by the cable installation.

Question, did the problem occur after the cable installation? If so, this is the area of your problem.

Nov 19, 2008 | 2000 Mini Cooper

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