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Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start

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bruce

02-06-2001 09:25:33




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My father-in-law gave me an old Montgomery Ward Tiller with a Briggs & Stratton engine about a year ago. He cranked it up before he left it, and it hasn't been cranked since. This past weekend my wife wanted to start on her garden so we tried to start it with no luck. I put gas in it, choked it (it has a pull-out on the engine), cleaned off the sparkplug, and eventually replaced the spark plug, but it would not start.

I was concerned that the engine wasn't getting spark, so I unscrewed the plug and left the plug wire connected to it, and pulled the crank again and there was no spark.

Am I on the right track here? If so, where do I go from here. I don't know much about small engines, but I'm not afraid to work on one.

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Gene Davis

02-28-2001 19:09:18




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 Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to bruce, 02-06-2001 09:25:33  
Sounds like you sheared the flywheel key! If so it will require pulling the flywheel, use only aluminum key as replacement.******lgd



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Tom

02-06-2001 18:48:39




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 Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to bruce, 02-06-2001 09:25:33  
If you don't know what you're doing, why not take it to a reputable small engine shop? You may wind up tearing things up while experimenting with this engine. Get yourself a junker from a scrapyard to take apart, to satisfy your curiousity about how they are put together.



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Bruce

02-07-2001 12:53:14




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 Re: Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to Tom, 02-06-2001 18:48:39  
This tiller (I would wager to guess) is 20+ years old (not mentioned previously), so, for all intent and purpose this engine probably is a "junker".

I thought that if the symptoms I described were indicative of a relatively minor problem, someone might give a possible remedy. And, if that remedy included "tearing" down the engine a little (ie. remove the housing, replace pull crank, check plug wire connections, etc), then I wasn't afraid to do that. If it was suggested that the job needed to be left to a proffesional, then I'm happy to do that, but if it is something simple that anyone should be able to do then why not save the money. I don't think I implied that I was in anyway doing this to satisfy my curiosity.

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Tom

02-08-2001 21:07:34




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 Re: Re: Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to Bruce, 02-07-2001 12:53:14  
Okay. Here's some advice. Many times, you cannot see the sparkplug fire because it is not well grounded, or because the spark is not showing up in strong sunlight. It is actually better to check for spark in slightly dark conditions. Here's a simple test: Take a twist off bottle cap, and fill it about 1/3 full of gasoline. Remove the sparkplug and pour this into the cylinder. Replace the plug, and pull the starter rope several times. If the engine tries to start, then your problem is in the fuel system. If nothing happens after several pulls of the starter rope ( try at least five for good measure ), then you have ignition problems. Post back, and let me know how this goes, and I'll take it from there. When an engine that has been sitting, looses it's fire, usually it is due to a film building up on the points, which makes for a poor electrical contact. Getting to the points involves removing the flywheel, and many novices will break something by trying to pry it off. This is where a properly equipped shop has an advantage over the backyard mechanic. A good shop will have the proper flywheel puller to do the job. Believe me, I have seen some flywheels that seemed to be welded in place, with the pressure needed to remove them, even with a flywheel puller. Your original post mentioned that your wife wanted you to use the tiller in the garden, so I assumed that this was a good, usable tiller, just needing some attention, and not a "junker".

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Bruce

02-12-2001 13:21:06




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 Re: Re: Re: Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to Tom, 02-08-2001 21:07:34  
I'm sorry, I failed to mention in my original post that I tried pouring a little gas into the cylinder as you just suggested. This didn't work, even after several pulls it made no inclination as to wanting to start.



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WAYNE T.

02-13-2001 07:48:27




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 Re: Re: Re: Re: Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to Bruce, 02-12-2001 13:21:06  
Sometimes when a engine sets for a long period of time the points can get stuck in the open position,this will prevent it from firing. Also check the condinser.



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john 4d

08-01-2001 12:29:02




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 Re: Re: Re: Re: Re: Re: Briggs Stratton (3.5 or 5HP ??) Tiller enging won't start in reply to WAYNE T., 02-13-2001 07:48:27  
1. check for spark...remove spark plug, re-attach plug wire, ground base of plug to engine, pull start and watch for spark. If you have spark, Pull the air cleaner and spray a shot of starting ether into the mouth of carb. If it starts for a short period of time, the indicators are that you have a fuel problem. This will get you headed in the right direction. troubleshooting is far more economical that replacing parts based on a guess or another's advice.

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Matt

04-05-2004 22:44:27




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 Re: Re: Re: Re: Re: Re: Re: Briggs Stratton (3.5 in reply to john 4d, 08-01-2001 12:29:02  
I've got an old 7 horse tiller that's as old as I am. It ran awhile back, sat a long time, then wouldn't run, like yours. A mechanic buddy of mine worked on it with me. We pulled the flywheel (it was a pain to get it off the first few times) and cleaned the points. It would fire maybe one time and then quit. We put a new condenser and points in it, and a new spark plug, and it ran for a while, so I brought it home. It ran a whole minute, but before I could get the carb tuned, it ran out of gas. Put gas in it, pulled for what seemed a thousand times, now nothing. Checked for spark, (yes, by laying the plug on the head) and now I once again have no spark!!! I think I may have to put a whole new ignition coil on it; they're about 40 bucks. Then again, my buddy at work says he'll sell me a 5 horse tiller for 50 bucks... hmmmm....

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daniel

04-26-2004 17:54:22




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 Re: Re: Re: Re: Re: Re: Re: Re: Briggs Stratton ( in reply to Matt, 04-05-2004 22:44:27  
first get a solid state coil--this will do away with the points and condensor---then take the tank off and put about six rocks in and shake all the rust out of the tank--clean tank out and re asemble



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Matt

04-26-2004 19:08:42




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 Re: Re: Re: Re: Re: Re: Re: Re: Re: Briggs Stratt in reply to daniel, 04-26-2004 17:54:22  
Yeah, turns out that's exactly what I did... the ignition thing anyway. (Don't know about the rocks) I got a retrofit electronic ignition from the local dealer (Buddy's Small Engine) and slapped it in there. No points, just one wire for grounding it to shut it off. Fired on the FIRST PULL! Been tilling ever since. Finally getting it tuned in so it will idle smoothly. Took awhile to get the governor set right, but I think I've about got it.

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