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Small Air Cooled Gasoline Engines Briggs & Stratton, Clinton, Lauson, Maytag, Nelson, Wisconsin and other small air cooled engines. Sub forums for mowers, scooters and powered eqipment.

Small Air Cooled Gasoline Engines

Trying to find out information on briggs engine model#9FB


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  #1  
Old 12-23-2009, 01:46:18 PM
RFirm RFirm is offline
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Default Trying to find out information on briggs engine model#9FB

i just recieived a briggs model#9Fb type 201537 serial# 101273 and dont now how to date it or how many hp it is. Can someone possibly give me some info on this engine?
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Old 12-24-2009, 12:26:30 PM
K D Redd K D Redd is offline
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Default Re: Trying to find out information on briggs engine model#9FB

9FB is nine CID, about 2.5 HP, F means a flange mount. There should be a machined shoulder on the PTO side of the block. "B" is for BALL BEARINGS. It will have at least one main bearing as a ball bearing and maybe both. This engine uses the MAGNEMATIC magneto. The coil, P/N 290880, is most likely BAD. You will likely be able to get spark at the spark plug by cleaning the points that are in the box below and to the left of the carb. The engine will most likely run but as you throttle up the engine will start running poorly. This is somewhat temperature sensitive. the colder the temp the longer the engine run without showing a problem.You will think you have a carb problem. You do not. You have a BAD COIL. I check the price of the coil from Briggs about a month ago. $103.00 I collect these old engine. Every one I have ever seen have this coil problem. Years ago I bought a new coil for $75.00. It went on a model 23 which is the ONLY engine I have that uses the "CORRECT" coil. Why is because I developed a coil conversion using a later Brigg coil that you can sometimes get for free from dead push mowers. This is not so much any more as Briggs went to the MAGNETRON solid-state ignition in 1981. JOIN the BRIGGS-N-STRATTON group on YAHOO. Look in the files section. You must join the group to have access to the files section. Look for MAGNEMATIC fix. In this file you will find a story from Gas Engine Mag. (GEM) called "Cheap Fix". It is instruction on how to install the later coil on these older engines. I developed the conversion. I DID NOT write the artical. You can still by the coil used in the artical, for about $40.00, from STENS. Do not try to use a solid-state conversion because these engine have a ignition advance system on the cam. If you used a solid-state system you loose this and a guy recently told me here on line that if you do the engine will kick back badly. I have a Model 9, 2-14's, a 19, a 23, and 2-23 FB on a Gorman-Rupp portable fire pumps. The Model 9 and the 19 are the most difficult to do the conversion on because of limited room under the flywheel.

Kent
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Old 12-24-2009, 12:31:16 PM
K D Redd K D Redd is offline
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Default Re: Trying to find out information on briggs engine model#9FB

You can find the month and year of build on asecc.com look in the tech directory for the briggs serial number list.

Kent
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Old 12-24-2009, 05:20:52 PM
K D Redd K D Redd is offline
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Default Re: Trying to find out information on briggs engine model#9FB

Engine made in March, 1953.

Kent
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Old 12-24-2009, 05:33:28 PM
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Default Re: Trying to find out information on briggs engine model#9FB

Thanks apprecciate the info. How did you get the year and month from the serial#?
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Old 12-24-2009, 05:35:33 PM
K D Redd K D Redd is offline
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Default Re: Trying to find out information on briggs engine model#9FB

From the tech data section of asecc.com

Kent
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Old 12-24-2009, 05:50:35 PM
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Default Re: Trying to find out information on briggs engine model#9FB

I went to the web site i got it figured out now thanks again.
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Old 08-08-2019, 09:17:39 AM
dab18351 dab18351 is offline
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Default Re: Trying to find out information on briggs engine model#9FB

I have a 1958 9FB Before i read this i thought it was like a 10HP because of the size of it and it seems so big for only a 2.5HP.
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