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Small Engines (Lawn Mowers, etc.)/Husqvarna Lawnmower hard to start

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QUESTION: HELLO MR JONES HOW ARE YOU? I HAVE BEEN GIVEN A HUSQVARNA LAWNMOWER, IT IS AN HU775   961450007 00 MODEL. THE ENGINE MODEL NUMBER IS 111P02-0116-F1  12042662, IT IS A 2012 YEAR MODEL. I REPLACED ALL CABLES PUT IN A CARB. KIT TUNE UP PLUS OIL CHANGE. IT TAKES ABOUT 8 TO 10 PULLS TO START, THEN IT RUNS EXCELLANT. TODAY I PULLED AND PULLED AND NO START. I AM GETTING FIRE TO THE PLUG. COULD THE OVER HEAD VALVES BE OUT OF ADJUSTMENT. WHAT WOULD THE GAUGE BE ON THE VALVES, SO THAT I COULD CHECK THEM? AND YES I AM GETTING GAS ON THE SPARK PLUG. THE IGNITION MODULE IS NEW, AND SET AT .010, NEED YOUR HELP AGAIN PLEASE SIR, THANK YOU, FRED.

ANSWER: Since you have a single cylinder OHV Briggs and Stratton engine, the closet model number for you engine states the valves should be .002 / .004 on an inch.  

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

Did you read the Briggs website procedure for adjusting OHV engines?

http://www.briggsandstratton.com/eu/en/support/faqs/servicing-the-valves

There may be lock nut on the rocker nut you have to loosen and re-torque if you have to adjust the valves.

Make sure you watch the You Tube videos on adjusting Briggs OHV valves.

Eric

---------- FOLLOW-UP ----------

QUESTION: I SET THE VALVES AT .003 ON BOTH THE INTAKE AND EX. VALVES, TRIED TO START ENGINE BUT NOTHING. I PULLED THE SPARK PLUG TO CHECK COMPRESSION AND IT READS  ZERO ON THE GAUGE. I AM GUESSING THE VALVES ARE NOT SITTING CORRECTLY. I DID NOTICE THAT WHEN I WENT TO SET THE VALVES, THAT THEY WERE VERY LOOSE. MAYBE .010 GAP ON THE INTAKE. THE OTHER VALVE LIKE .006. ITS KIND OF HARD TO BELIEVE THAT THIS MACHINE RAN LIKE NEW A WEEK AGO. WHAT IS MY NEXT STEP MR. JONES?

Answer
Zero on the compression gauge is very odd.  Try setting the valves at:

Valve Clearance Intake .003 - .005 in.
Valve Clearance Exhaust .005 - .007 in.


Link to service manual.

http://www.ccdist.com/_serviceManuals/briggs/276781.pdf

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CB4QFjAA&url=http%3A%2F%2Fwww.ccdist.com%2F_serviceManuals%2Fbriggs%2F276781.pdf&ei=chlIVaW3GIa6ggTIqYGgBA&usg=AFQjCNEzjfSkwP5GaFtTEChUYaZDh21Clg&sig2=8QzQF8EtWpKWUcsUi14agA

Let me know if the above valve clearances gives you some compression.

Eric

Small Engines (Lawn Mowers, etc.)

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Eric A. Jones

Expertise

Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.

Experience

Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

Education/Credentials
MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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