My current engine was bought from Thesmallmachinewarehouse in 2019. Before purchasing, I made sure that it would fit the Model 45, and they told me it was a straight fit, off with the old and on with the new, which it was. Although there are references to Briggs & Stratton [USA] in several places, it was actually made in China.
The problem I have is that after backlapping the cylinder, I had to tilt the mower with this new engine, backwards [say nearly 90 degrees] to check the quality of cut using some couch. I always use grass for doing this, as I have never seen a lawn anywhere that grows paper.
The chains and sprockets cover was removed, due to the fact that I wanted to remove the chain from the driveshaft sprocket, in order that my drill didn't "give up the ghost" during the backlapping process, which also meant that only the cylinder was turning, and nothing in the engine was.
The motor has never ever had a problem, until this happened. Something is preventing the piston from turning it's complete cycle. I can turn it physically until it gets to a point where it becomes extremely difficult to do so.
Engine Features:
Engine model: 18019 [Although the owners manual that came with the machine says it's Model 83100]
Engine Type: 401702850
Engine Code: 0831321172H1
Starting System: Recoil Start [Impossible to use at the moment!]
Oil: SAE 15W-50 18 Oz, Or 532 mls [Approx]
Fuel: Unleaded
Power On/Off: There is an On/Off button, but I always turn the fuel off until the engine finally stops, then disable it via the switch.
Regular Maintenance: Check height of cut, keep cutting gear well & truely clean. Oil change every year. Keep air filter clean, Check and clean spark plug, [replace when necessary]. Wash mower down and blow any excess water & debris off engine with compressed air after each use. Then spray WD40 onto cylinder, to prevent rust.
The Cutting Gear: 7 Bladed cylinder, which, along with the base plate, is due to for grinding next winter.
Any advice/help here would be very much appreciated.
