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Starter barely turns over--any ideas?--


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#1 Afbrown OFFLINE  

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Posted March 31, 2015 - 05:28 PM

My opposed twin briggs mower barely turns over, its not the battery im using nor the wiring as i am hooking jumper cables straight to the starter, has anyone ever encountered this before? Hope the starter isnt bad, every once and a while it will randomly turn over just fine and start other times its not so.

#2 Auburn David OFFLINE  

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Posted March 31, 2015 - 05:33 PM

Could be a weak starter..or it could have a sheared pin on the flywheel causing the timing to be off...try pulling one spark plug out of it and see if it turns over faster/normal..if bot its probably the starter..well that how I check them anyway..


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#3 Afbrown OFFLINE  

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Posted March 31, 2015 - 05:39 PM

Yup i took out the plugs and it turned over like it was nothing, i had one person say it was my valves, not set right but does that test prove that its just the starter?

#4 Auburn David OFFLINE  

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Posted March 31, 2015 - 05:41 PM

I would only remove 1 plug and try it..that way it still has some resistance.


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#5 Auburn David OFFLINE  

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Posted March 31, 2015 - 05:44 PM

If it turns over fine sometimes and not others it leads me to lean more toward the starter...have you heard it backfire any at all?


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#6 Afbrown OFFLINE  

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Posted March 31, 2015 - 05:47 PM

Yes it does backfire when it turns over slowly but every time it has turned over fast i have not noticed any backfire.

#7 Auburn David OFFLINE  

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Posted March 31, 2015 - 05:47 PM

if it isnt the starter I would check the shear pin,even if its bent just a little it will throw the timing off.


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#8 Afbrown OFFLINE  

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Posted March 31, 2015 - 05:51 PM

Ive built a v-8 from the ground up but these small engines confuse the hell out of me, mind telling me what a shear pin is and its location?
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#9 Afbrown OFFLINE  

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Posted March 31, 2015 - 06:09 PM

if it isnt the starter I would check the shear pin,even if its bent just a little it will throw the timing off.



#10 Auburn David OFFLINE  

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Posted March 31, 2015 - 06:21 PM

Shear pin is in the flywheel(flywheel key)it keeps the flywheel situated on the crankshaft....


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#11 Auburn David OFFLINE  

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Posted March 31, 2015 - 06:21 PM

that isnt a Vtwin..but same principle.


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#12 ol' stonebreaker OFFLINE  

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Posted March 31, 2015 - 09:52 PM

  Remove the starter, disassemble it and clean everything up real good. Check the condition of the brushes and see if the armature is dragging on the fields. If they are you need a new starter unless you can find a shop to replace the bushings for less than a new starter Then put some grease in both shaft bushings. Reassemble and see how it does. I have a 90HP outboard that acted the same way. I did what I just described and it still spins the motor good after 5 yrs.

                                     Mike



#13 crittersf1 OFFLINE  

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Posted April 01, 2015 - 07:45 AM

I'd be checking the ground before I would do anything else.


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#14 dcon12 ONLINE  

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Posted April 01, 2015 - 05:45 PM

Please check your valve lash. Briggs will not turn over with the valve lash out. A briggs with a pull start will yank the cord out of your hand when it is out. Don
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