Starter Not Engaging Flywheel
time2mow
14 years ago
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mowertech_25
14 years agotime2mow
14 years agoRelated Discussions
Honda HR215 starter rope/flywheel
Comments (2)"My starter rope pulls and retracts OK but dosen't seem to engage the flywheel to turn the engine over." When you say it doesn't seem to engage to flywheel I'm not sure what you are describing. Does the engine rotate when the rope is pulled?...See MoreToro 13hp Riding Mower
Comments (2)It would be a 28" Briggs OHv. Lots of posts on excessive valve lash causing the compression release not to function....See MoreCraftsman 20HP Mower won't start
Comments (18)Think Timing... For power to be developed, the ignition of the compressed air/fuel mixture must take place at exactly the correct instant - just before the piston reaches Top Dead Center (TDC) on the compression stroke. Timing is set on older mowers with point type ignition systems by adjusting the point gap and generally only changes due to wear. However, these changes are gradual and unless the points come loose for some reason, will not likely suddenly prevent the mower from starting. On newer electronic ignition systems, there is basically no adjustment as the position of the electronic ignition coil/module fully determines ignition timing and this is fixed. However, timing can be grossly messed up if the flywheel key gets sheared and the flywheel then rotates a fraction of a turn on its mount on the crankshaft. The result may be a mower that does not start, backfires or runs erratically, lacks power, won't run and/or start when hot, etc. This is very likely to happen should the blade strike a rigid object causing the mower to stop instantly. In this case one or both of the blade lock key and flywheel key have sheared to (hopefully) protect the very expensive internal parts from damage. There are likely not going to be any timing marks for that old timing light you have sitting gathering dust somewhere. The only test really is to inspect the flywheel keyway to determine if damage has occurred....See MoreBriggs Hard to start and wont stay running
Comments (6)Contrary to the problem associated with OHV valve clearance and hard starting, as a flathead engine ages the valve clearance does become less, at an extreme it could cause stalling when warmed up BUT this engine uses an entirely different means of relieving compression and less clearance would actually make it easier to turn over, not more difficult, so I think that pretty well blows that theory. Plus this engine will start and run happily on one cylinder so whatever is going on affects both cylinders OR the thing is only running on one cylinder to start with. The starting thing is common and I have a list of possibles that I will send you IF you like. As for stalling, I might have some suggestions on that also. Walt Conner wconner5 at verizon dot net...See Morerustyj14
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