Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Do you have engine cranking over?
If engine is cranking, do you have spark at the plug wire? Remove spark plug and with the plug grounded to metal, see if you have spark when cranking. If you have spark, put finger over the spark plug hole, and see if you have compression.
Positive battery cable goes to stater solenoid, if you jump the two large termials on the solenoid, will engine spin?
Can you turn engine by hand? Not locked up?
Engine have screen on top? Remove the screen ad put socket on the exposed flywheel nut.
Where does the positve battery cable go to? Should go to starter solenoid/relay. then on to starter ,when solenoid closes.
If you put positive battery cable to the staters single post, stater should engage the flywhell and spin engine. If battery voltage is above 12.5 volts. If not, the starter is bad. Or the mating gear on the flywheel is damaged! Can you get the model number from tractor and engine? Engine example will be 345656-023-B1 , not sure about the Bolens number.
Did engine spin, or just starter. If just starter, remove the starter and see if the gear is good.
Engine numbers? Just two bolts and the cable think!
This is old flat head twin?
Older models have two bolt flange, at the top, that holds starter to side of engine. Newer models have two bolts under the flywheel that have to be removed!
Here is link to the complete engine.
Service manual says remove the flywheel to get at the bolts!
Come up with the Bolens tractor number, and I may be able to find a wiring diagram!
On hood? Or a plate on the frame?
It may be an MTD model, made for Bolens.
Battery voltage may not be what it needs to be! Charger may not do it!
Did you find problem?