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16.5 Briggs won't start

#1

S

slick49

If you try to start it, it will bump and kick back (counterclockwise) a bit. If you continue to bump it, it will kick back enough (180 degrees) and it will fire right up.

If the first time I try and it just bumps, I can open the hood and rotate it by hand counterclockwise about 180 degrees and it fires right up.

I have replaced the Starter, Solenoid and Battery but has not fixed it.

All suggestions greatly appreciated. Thank you~~~~~~~Ron


#2

I

ILENGINE

Assuming OHV single cylinder engine. You need to adjust the valves. Remove the valve cover and the spark plug. rotate the engine to where the piston is on TDC and both valves are closed, the turn just a little further past TDC, they claim where the piston moves back down 1/4 inch. If one of the valves is open, then rotate the engine a complete revolution, and then set as above. Adjust the intake to .004-.006 and the exhaust to .005-.007 keeping in mind that the intake valve is the bottom valve. after comfirming the correct adjustments reistall the valve cover and see if it will start then.


#3

S

slick49

ILENGINE said:
Assuming OHV single cylinder engine. You need to adjust the valves. Remove the valve cover and the spark plug. rotate the engine to where the piston is on TDC and both valves are closed, the turn just a little further past TDC, they claim where the piston moves back down 1/4 inch. If one of the valves is open, then rotate the engine a complete revolution, and then set as above. Adjust the intake to .004-.006 and the exhaust to .005-.007 keeping in mind that the intake valve is the bottom valve. after comfirming the correct adjustments reistall the valve cover and see if it will start then.
Click to expand...

Yes it is a single cylinder OHV. I'll do that and post the results. Thank you for your input~~~~~~~Ron:thumbsup:


#4

Fish

Fish

http://outdoorpowerinfo.com/engine_specs/briggs_valve_gaps.asp


#5

S

slick49

Fish said:
http://outdoorpowerinfo.com/engine_specs/briggs_valve_gaps.asp
Click to expand...

These are the numbers on my engine : Model #31A707.....Type #0335E1....Trim #040903ZA

What chart do I use? Earlier post said Intake...004-.006 and Exhaust...005-.007.

I appreciate everyone's input (all posts) but need to have it in my mind as the gospel truth as I make these adjustments. Just double checking.

Thank you~~~~~Ron:smile:


#6

Fish

Fish

Well I posted the chart, because none of us knew your model numbers, and I knew that the gaps were different, depending on the model numbers, which you choose to believe, well, that is totally up to you.


#7

Fish

Fish

Briggs Valve Gap


#8

Fish

Fish

http://www.briggsandstratton.com/us...e/PDFs/Engine Specifications Chart_ms3992.pdf

Here, if it is from Briggs, then it should be correct.


#9

Fish

Fish

There is only a couple of members here that consider their advice as "Gospel", but they must be "feeding the masses" on some other threads today...... I always try to provide links to info if I can, but then again, everything you read on the web is not always correct either.....


#10

I

ILENGINE

At one time is was .004-.006 for all their OHV engines. Then they decided part of the kickback/adjustment issue was the result of the gap being to wide, so they changed it to .003-.005 on the intake, but left the exhaust at .004-.006. Then as new models came out they new spec called for a .005-.007 on the exhaust. So basically if you set the intake at .004 and the exhaust at .006 you will cover all the larger OHV specs.


#11

Fish

Fish

Yeah, sorry about that.. I never really kept up with the endless bulletins, I just used what they published as specs. When you are talking
about specs. that close, it likely wouldn't matter much anyway.


#12

S

slick49

ILENGINE said:
At one time is was .004-.006 for all their OHV engines. Then they decided part of the kickback/adjustment issue was the result of the gap being to wide, so they changed it to .003-.005 on the intake, but left the exhaust at .004-.006. Then as new models came out they new spec called for a .005-.007 on the exhaust. So basically if you set the intake at .004 and the exhaust at .006 you will cover all the larger OHV specs.
Click to expand...

Thank you for your input~~~~~~~.004 Intake and .006 Exhaust is what I will set them at and post back the results.:thumbsup:


#13

S

slick49

Fixed it like you said and it runs and starts perfectly. Thanks to everyone for their input. Love this forum!!!!:smile:


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