Briggs & Stratton Intek Series, 19 HP, 540 cc, Single Cylinder Engine

I replaced a Kohler Courage 18 in a Toro LX420 with this engine. It was almost a direct replacement (same engine shaft, attachment pattern, and wire harness). The attachment holes had to be tapped. The exhaust is on the side, rather than the front for the engine that I replaced. I did have to modify a bracket for the cover on the tractor, as the engine exhaust caused a slight interference. But other than that the Briggs installed without a problem. It started on the first try and runs great! I have about 2 hours on it with no problems.

Perfect replacement for a Briggs & Stratton 31P777 18.5hp engine. Completely plug and play. No modifications needed. People complain that the holes aren't threads for the holes that bolt the engine to the frame. The bolts that hold the original engine are threar cutting bolts. They will cut threads as they are run in with an impact. Took me 15 minutes to swap the engines out and have it up an running.

Perfect fit for my craftsman lawn tractor. Very easy to swap out the bad engine for this new one. Runs awesome. It's been 6 months and engine performing flawlessly.

Packaging and lack of documentation drove 4 stars.Kohler 18hp Courage on 2006 Snapper 350Z blew head gasket and local dealer wanted $2K for new engine install or $3.7K for new Tiro ZTR. Based on many in depth reviews here I gave this engine a try and success. Many thanks for reviews on wiring and throttle hookup.Packaging was not good. Styrofoam base crumbled as the engine shook in transit. Time lost to vacuum Styrofoam bits out. Ugh.Bolt pattern matched to attach engine. I used bolts and nuts with nylon inserts.Engine shaft fit pulleys no problem. Battery powered impact wrench is your friend. Keep the square shaft key from the old engine.Wiring was plug and play to what was in ZTR for Kohler and visual check showed wires ran to same spots. Thanks to Jack's Small Engines web site to do a wiring harness check just to be sure.Throttle was as shown in other reviews. You are connecting to the governor not the butterfly valve on the carb. Pull the black plastic insert and screw out the torx screw by the "R" letter stamped in the bracket.Choke is full on auto when throttle pushed a little past full open (thanks to YouTuber working on 13hp briggs engine). A manual choke can be attached. There is a screw to hold the cable housing in the intake tube and a plastic arm on the choke. I haven't needed it.My challenge was getting fuel to the carb. It seems to be an Intek design issue and/or my abilities. On a Craftsman lawn tractor with 24hp Intek twin I can pop the air filter and dribble fuel in to get it running until engine vacuum pulls fuel from the tank. Like they do at a drag strip. This engine has 2 90 degree bends from filter to carb inlet. Using primer bottle wasn't working. So frustration drove a basic approach. Manual valve installed between fuel pump and carb. Carb solenoid screwed off to ensure it was working (reconnected wires as I held solenoid, switch on showed it worked fine). But not much gas in bowl. So went with a temp gravity fed approach.. Kept manual valve closed. Small gas tank off small briggs engine tied to 2 wheel dolly alongside and above engine. Fuel line running to a filter and then direct to carb. Squirt prime bottle used to ensure carb bowl full. Engine kicked off as expected, ran great. After about 10 minutes running I ran a hose from the manual valve to a pan and opened the valve. Engine fuel pump now primed and gas flowing. Let engine cool and installed line from manual valve to carb. Uused primer bottle to fill line as much as possible, opened manual valve and all is good. I think fuel line routing from ztr fuel tank was a contributing factor. Just a long trek to get fuel to fuel pump (run by engine vacuum).

Great fit, plug and play. I decided to drill out the mounting bolt holes to use bolts and nuts instead of what my old Kohler courage engine used. Started right up, great power for my Craftsman tractor.

Perfect fit for my mower. Install was easy and worked amazingly.

Good Deal

The media could not be loaded. I don’t do many reviews on products, but in this case I will. Because this information may be very useful to someone else that had the same problem or concerns.My 42” inch cut Husqvarna model YTH18524 engine shattered the piston arm cause of the balancer broke and it made the piston rod just explode. The motor was the 18.5HP 33R777-0005-G1 and I was looking for replacing just the parts. But it was a catastrophic failure in the motor. So I was on a hunt for a new motor… come to find out, the 33R777-0005-G1 are discontinued. So now I was upset cause now, I need to find a new Mower now versus a new motor… I was upset to say the least. But I started doing a lot of research on replacing the motor still. From the marketplace, eBay to amazon. Wasn’t sure buying a used motor on marketplace or eBay would been the best idea.. So got on amazon and seen the 19HP 33S877- 0019-G1 Motor. I researched into this motor extensively to make sure all components are compatible with my Husqvarna YTH18524. To my surprise, it was compatible with my mower. So I ordered it.I came fast, earlier than expected. Packaged well. Took the old motor out and dropped the new one in. Note the 19HP 33S877-0019-G1 “DOESN'T HAVE THREAD FOR EXISTING BOLTS” you can either use a threader and cut your own threads or you can get bolts and just bolt it on. The motor mount holes lined up perfectly and bolted on with ease. The electric harness was an exact match so all I had to do was plug and play, and connect the starter wire. Now with my mower it’s not a side exhaust, it’s a front exhaust and I ordered the 532137352 Muffler Kit (Muffler & 692236 Gasket) for Husqvarna and took off the side muffler that comes with the motor and switched with the front muffler and it fits perfectly.Pleased with how easy it was to install and pleased with how it runs. Be sure to add oil to it before starting it. The motors don’t come with the oil in it. So be sure to add oil before starting. As for value. It was well worth buy the motor and replacing that instead of buying a new lawnmower. And the power of the lawnmower was exactly the same as the old motor I took out. Hope this helps someone else out there.