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| tom | I have a HUSKEE with a 14.5hp Briggs model 287707 OHV engine. at any throttle seeting, it would only idle and needed half choke to do that. I rebuilt carb with new parts, no change. Just discovered the intake valve was not moving because the stud holding the rocker arm was loose. I tightened and now valve is operating (turned over engine without plug in place). When I tried to start, it popped a couple times, then backfired, sounded like a cannon, and blew the muffler in two pieces. Any ideas?
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| Joe | After you tightned rocker stud-Did you adjust valve clearance?Intake valve should be .003"-.005" (.08-.13mm)clearance,if you removed exhaust rocker clearance should be .005"-.007"(.13-.18mm)all measurements set cold between valve stem & rocker arm with piston at 1/4" past TDC(piston over the top & 1/4" into it's downward travel)you may have had intake valve adj too tight & it didn't close all the way,could load cyl & muffler with gas,when it did fire it blew muffler apart.
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