Engine Starting Problem

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  #1  
Old 12-01-02, 11:19 AM
KoalaBear
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Ariens ST824 Snowblower won't start

MODEL ST824, 8 HP, TECUMSEH ENGINE : The wire to the spark plug broke. I pulled flywheel off, installed new coil, condenser, points, and sparkplug. Turned the crankshaft until points were open as far as possible, then gapped the points at .020. Getting a spark, and gas to carburetor, but it still won't start. Could the timing be off, and how do I set it?
Thank you.
 

Last edited by KoalaBear; 12-02-02 at 04:08 AM.
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  #2  
Old 12-01-02, 06:07 PM
mastertekTN
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You didnt happen to mention what brand of engine you have, but i will try to help any way. on a briggs engine the coil gap is .010 plug is .030 about the only way you could have the timming off is if you left the flywheel key out or didnt get the flywheel tite enough when you reinstalled it. This would would cause the key to shear and put the engine out of time.If it is a tecumseh engine with points you will need the help of tecuman on setting the coil. Usually if an engine is out of time when you try to start it the engine will try to run backwards and jerk the pull rope out of your hand and this usually hurts like------. you mite try a little bit of starting fluid i wouldnt use much though.this will tell you if you have a fuel problem. you can let me know how it goes. good luck.
 
  #3  
Old 12-01-02, 11:06 PM
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I agree with everything mastertek said. Post your engine brand, HP, and model # so we can give you accurate advice.
 
  #4  
Old 12-02-02, 05:49 PM
mastertekTN
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The model # is usually stamped on the sheet metal that covers the flywheel near the spark plug or on either side towards the top. Im guessing the model # for your engine will start with HS, HM, or HH. There should be 3 sets of numbers, model #, spec. # and ser. #. These numbers will help alot.
 
  #5  
Old 12-03-02, 04:37 AM
Tcumcman
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Ariens 8HP Snowblower

Guys, I thought he DID SAY it was a Tecumseh? Yeah....I would
guess you have a timing issue. If the points are just breaking at
OTHER THAN the timing spec (should be .090 before TDC), it puts
the valve train, carburetor...all out of sync. It's the "CLASSIC" woe
Tecumseh has experienced with a "timeable ignition system" vs.
a simpler way of doing things. I HAD HAIR when I started, and in
just 2 years (until solid state came around) LOST IT...ALL !!
I would suggest getting a repair manual on 3-10HP 4-stroke
engines (part #740049). It will describe the timing procedure in
there and help you to understand it better. It's "BAMBOOZELED"
MANY a good mechanic over the years. BEST OF LUCK !! You'll
get it going !!!!

Tcumcman
 
  #6  
Old 12-03-02, 05:20 PM
KoalaBear
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#'s on Flywheel

mastertekTn: The numbers on the flywheel are: HM80-155276J
Ser 4307D . -- I will be looking for the repair manual recommended by Tcumcman. Thanks.
 
  #7  
Old 12-03-02, 07:06 PM
Tcumcman
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Repair Manual

KoalaBear,

You've got an engine there that right at the fringes of having
solid state ignition. Spec # 155276K "HAS" a solid state coil.
But yours is definitely breaker points & condenser ignition. The
manual you'll need is the one I've already mentioned...740049.
That's the Tecumseh part number. If a Dealer has 692509 in
stock, it'll be the same as 740049. The 740049 is just a later
and newer published manual. The timing procedure will be
described in either one. Good luck and let us know how you do.

Tcumcman
 
  #8  
Old 12-03-02, 09:27 PM
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I agree. It is a pain to set the timing on this crazy ignition system. You really should use the manual, as the procedure is a bit involved. It requires measuring the position of the piston in the cylinder, and getting the points to break at the correct spot.

Tcumcman....Koalabear didn't post the model and make initially. He/she came back a day later and edited the post. That's why we asked for the info.
 
  #9  
Old 12-04-02, 09:48 AM
Joe_F
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ST824 usually means 8 horse engine, 24" cutting path in "Ariens-speak".

Most Ariens are "Chief" (Tecumseh ) equipped, but engine and model # specifics always help as I can tell you from my forum .
 
  #10  
Old 12-31-02, 09:21 AM
KoalaBear
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Sorry for the original confusion on Model and Engine info. I edited original post thinking it would be simpler for anyone else looking to respond. Also, sorry for the delay in getting back to this. I was on ALOT of overtime right up to Christmas. I did purchase the Tecumseh Technician's Handbook #740049. Since I was getting sparks, and no gas, took the bowl off the carburetor and the float was sticking in closed position. I removed and cleaned it and reinstalled. I put a little gas in the spark plug area and after a couple of attempts, it started. I readjusted the idle mixture screw & main mixture screw and it is running fine. Thank you for all your help.
 
  #11  
Old 12-31-02, 11:39 AM
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Glad you got it going!
 
  #12  
Old 12-31-02, 11:47 AM
KoalaBear
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Thank you. The Lord's blessings on you and yours as well!
 
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