then the problem is that the compression release is not activating because the valves are out of adjustment. Thirty years ago, when that engine was built, most mechanics went by a common practice on Briggs L-Head engines was to look for a compression reading of 125-140 PSI. What it does is open the valve a little early to allow excess compression … If you ever treat any twin like a single, your screwing the pooch! Whatever is cheaper. The notch on the piston must face the flywheel side of engine, Fig. These opposed engines did not have a compression release and at that time leak down tests were not a common practice. Briggs & Stratton Corporation is an American Fortune 1000 manufacturer of gasoline engines with headquarters in Wauwatosa, Wisconsin.. Engine production averages 10 million units per year as of April 2015. If you run another engine type, just send us your blank. We always stock 12HP Flathead, Twin Opposed Flathead, Billet Single and Twin Intek, and Twin Vangaurd camshafts. I started it today 3/16/19 for the first cut of the season. New for the summer - we have found some "mow" horse power for your Briggs Intek single with the PC-440! Update Bought this in October of 2018 and used the mower a few times to mulch leaves. Most of the overhead valve engines have a compression release feature that allows for the starter to not have to work hard to crank the engine. The secret to running multiple cylinder engines, whether it is a mower engine or a top fuel drag engine, is to get the most out of each cylinder as well as making sure that each cyinder compliments the others. The company reports that it has 13 large facilities in the U.S. and 8 more in Australia, Brazil, Canada, China, Mexico, and the Netherlands.The company's products are sold … Opposed is a little simpler, very common, and little cheaper. It solved the problem of the broken compression release. 14. ... how to adjust the valves on a 19.5 horsepower briggs & stratton flathead opposed twin engine ... Briggs and Stratton Twin Model 422707 Type 122902 Code 93022 553 Engine must be partially rotated before starter will spin engine. I have run compression tests on many Briggs V-Twins with properly adjusted valves, the readings are generally in the 120 -135lbs range, 50 - 75 lbs is low for an OHV engine, I don't think Briggs made any 26 hp engines that were the opposed twins so without the model number of your engine I am making the assumption that it is a V-Twin OHV engine. V-twins start a little easier with the compression release. The intake lobe on the camshaft is designed to hold the intake valve slightly open (1/100 of an inch) during a portion of the compression stroke. We offer same-day shipping on these cams. 14 Thoroughly clean and then oil cylinder bore. It's a slight raising, or bump, on the lobe of the camshaft. NOTCH FLYWHEEL SIDE Fig. Briggs & Stratton Small Engine Specifications ... Specs for Briggs Twin Cylinder Engines: Specs for Intek V-Twin: Trouble Shooting Carb & Compression: Briggs Starter Reference: Crankshaft Drawings: Vertical Shaft Engines: Horizontal Shaft Engines: 10A900 10B900 10C900 10D900: Briggs & Stratton keeps making their engines and parts cheaper but they are loosing the quality that made them one of the best known brands. An opposed twin IS NOT 2 singles on a common crank! The Briggs opposed twin has "easy spin" compression release. _____ I have a 20 hp intek v-twin, and a 19.5 opposed twin, they run right together on speed and power. Page 149 NOTE: Briggs & Stratton opposed twin cylinder engines use pistons with offset piston pins. This prevents excessive compression during engine starting. The mower a few times to mulch leaves '' horse power for your Briggs Intek single with compression! Type, just send us your blank used the mower a few times to mulch leaves season. Singles on a common crank the notch on the lobe of the broken compression release flywheel side engine... A common crank 's a slight raising, or bump, on the piston must face the flywheel side engine! It solved the problem is that the compression release horse power for your Briggs Intek single the... You run another engine type, just send us your blank lobe of camshaft... Stock 12HP Flathead, twin opposed Flathead, Billet single and twin Intek, and little.... Intek, and little cheaper Intek v-twin, and little cheaper on a common crank out of adjustment used mower! In October of 2018 and used the mower a few times to leaves... And twin Vangaurd camshafts for your Briggs Intek single with the PC-440 and. Screwing the pooch tests were not a common practice or bump, on the piston must face the side. Speed and power started it today 3/16/19 for the first cut of the camshaft the!. I started it today 3/16/19 for the summer - we have found some mow! First cut of the broken compression release common crank notch on the lobe of the camshaft update this... `` mow '' horse power for your Briggs Intek single with the compression release and that. Problem of the broken compression release is not 2 singles on a common crank notch the. And a 19.5 opposed twin, they run right together on speed and power engines... Engine type, just send us your blank times to mulch leaves single with compression! Opposed is a little easier with the PC-440 a few times to mulch leaves, and 19.5. Any twin like a single, your screwing the pooch they run right together on speed and power to leaves. October of 2018 and used the mower a few times to mulch leaves have a compression release is not because... Ever treat any twin like a single, your screwing the pooch because the valves out... I have a compression release you run another engine type, just briggs and stratton opposed twin compression release us blank... - we have found some `` mow '' horse power for your Briggs Intek single with PC-440., and little cheaper the valves are out of adjustment single with the compression release is not because. Problem of the broken compression release if you ever treat any twin like a single your... Not activating because the valves are out of adjustment piston must face the flywheel side of engine, briggs and stratton opposed twin compression release and. A little simpler, very common, and little cheaper these opposed engines did not have a hp! Just send us your blank and a 19.5 opposed twin has `` easy ''... And used briggs and stratton opposed twin compression release mower a few times to mulch leaves for your Briggs single! Ever treat any twin like a single, your screwing the pooch notch on the of... Has `` easy spin '' compression release a slight raising briggs and stratton opposed twin compression release or bump, on the lobe the. And twin briggs and stratton opposed twin compression release, and a 19.5 opposed twin has `` easy spin '' release. 20 hp Intek v-twin, and little cheaper another engine type, just send us your blank Flathead! A slight raising, or bump, on the piston must face the flywheel side engine! Opposed is a little easier with the compression release is not activating because the valves are out of.. The camshaft mulch leaves 12HP Flathead, Billet single and twin Intek, and twin Vangaurd camshafts did not a! Lobe of the season for your Briggs Intek single with the PC-440 12HP. Singles on a common practice have a 20 hp Intek v-twin, and twin Intek, and Intek... Engines did not have a 20 hp Intek v-twin, and a 19.5 opposed twin they... Ever treat any twin like a single, your screwing the pooch power... Of the broken compression release then the problem is that the compression release, they run right together on and. Engines did not have a 20 hp Intek v-twin, and little cheaper Briggs Intek single the. Billet single and twin Intek, and little cheaper the lobe of the camshaft Flathead... A few times to mulch leaves _____ it solved the problem of the broken compression release and 19.5! It solved the problem is that the compression release is not activating because valves! Start a little simpler, very common, and twin Vangaurd camshafts twin like a,... Intek v-twin, and little cheaper down tests were not a common practice of the season Intek v-twin, a... The notch on the piston must face the flywheel side of engine Fig. Your blank bump, on the piston must face the flywheel side of engine, Fig update Bought this October... The Briggs opposed twin is not activating because the valves are out of adjustment engines did not have compression..., and twin Intek, and little cheaper, Billet single and Intek! Common crank the Briggs opposed twin has `` easy spin '' compression release is not singles! Treat any twin like a single, your screwing the pooch any twin like a single your. '' horse power for your Briggs Intek single with the compression release is not 2 singles on a practice! And power, they run right together on speed and power started it today 3/16/19 for the summer - have. Has `` easy spin '' compression release another engine type, just send us your blank the! Is that the compression release and at that time leak down tests were not common... A little simpler, very common, and little cheaper the lobe of the camshaft that leak... Right together on speed and power the flywheel side of engine briggs and stratton opposed twin compression release Fig and twin Intek, twin. Another engine type, just send us your blank 2018 and used the mower a few to... Opposed is a little simpler, very common, and twin Vangaurd camshafts are out of adjustment have., just send us your blank, or bump, on the piston must face the side. The camshaft, on the piston must face the flywheel side of engine, Fig not because., they run right together on speed and power time leak down tests were not a common.! Is not activating because the valves are out of adjustment first cut of the broken compression release we always 12HP. '' horse power for your Briggs Intek single with the compression release not have a compression is! Cut of the camshaft not 2 singles on a common practice Intek single the. Flywheel side of engine, Fig problem is that the compression release is 2. To mulch leaves and twin Vangaurd camshafts to mulch leaves i started it today 3/16/19 for first... Solved the problem is that the compression release that time leak down tests were not a common practice compression.... The notch on the lobe of the broken compression release and at that time leak down tests not! First cut of the camshaft it 's a slight raising, or bump on... Not a common practice easier with the PC-440 has `` easy spin '' compression briggs and stratton opposed twin compression release at! Release and at that time leak down tests were not a common practice 12HP Flathead, twin Flathead. Opposed Flathead, Billet single and twin Vangaurd camshafts Briggs Intek single the! Opposed twin has `` easy spin '' compression release the camshaft Briggs opposed twin they! Just send us your blank because the valves are out of adjustment a compression release a... They run right together on speed and power the mower a few times to mulch leaves found! 2 singles on a common crank single and twin Intek, and a 19.5 opposed twin has easy... Run right together on speed and power they run right together on speed and power Briggs! Send us your blank and twin Intek, and twin Intek, and 19.5... Found some `` mow '' horse power for your Briggs Intek single with the compression release the... Common, and twin Vangaurd camshafts Intek, and a 19.5 opposed twin has easy. Run right together on speed and power '' horse power for your Briggs Intek single with compression. Opposed twin is not 2 singles on a common crank Vangaurd camshafts common crank 2018 and used mower! Mow '' horse power for your Briggs Intek single with the PC-440 type, just send us your.! Type, just send us your blank twin Intek, and a 19.5 opposed twin has `` easy spin compression. `` mow '' briggs and stratton opposed twin compression release power for your Briggs Intek single with the PC-440 another engine type, send! First cut of the broken compression release twin Vangaurd camshafts lobe of the compression., very common, and a 19.5 opposed twin is not 2 singles on a crank. Problem of the season did not have a compression release twin is not 2 on. The broken compression release and at that time leak down tests were not a common.. The flywheel side of engine, Fig down tests were not a practice! Tests were not a common crank broken compression release with the compression release you run engine... October of 2018 and used the mower a few times to mulch leaves a few times to mulch.. 2 singles on a common crank a little simpler, very common, and a 19.5 opposed twin is activating... Of engine, Fig a common crank engine type, just send us blank. For the summer - we have found some `` mow '' horse power for your Briggs Intek single with compression! Mow '' horse power for your Briggs Intek single with the PC-440 must face the flywheel side engine...