Senior MTF Member
Join Date: Mar 2011
Location: Southern California
Re: Help! Problem Starting Cub 154 Lo-Boy (LowBoy sp?)
What do you mean it won't turn over? If the flywheel is spinning but the crankshaft isn't turning there are some sheared bolts on the flywheel. If you mean the crankshaft is spinning but the engine isn't firing then there is a series of diagnostic steps that could isolate where the trouble is.
Check to verify spark at all plugs. Pull them one at a time, ground to something and crank the engine. You should have strong sparks on all cylinders. If not, work back and isolate.
If you have good spark, and it's been sitting, you have a fuel issue. Try a quick spray of ether. If it fires a bit, then you need to check/change your fuel, the filter, and lines. A carburetor cleaning may be in order.