if you can't spin it easily by hand, it needs to come apart and get cleaned and lubed - you can check it by holding the motor case against the ground batt post, and touching the wire to the pos post ... might just spark and grunt if it's semi-siezed up, but even if it runs, being hard to turn manually means it needs attention

Bill

Moved over to the Passing Lane

"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir
"When we tug a single thing on an old truck, we find it falls off" ~ me
Some TF series details & TF heater pics