| All of the moving parts are fully enclosed so you have got no chance of sprockets or drive shafts whirring around or anything like that. |
| An endless chain connects the sprockets on the carriage wheels to the sprocket wheels on the driving shaft. |
| The undercarriage supports the house structure and includes the tracks, drive sprockets, rollers, and idlers. |
| The nuts firm, the brakes in order, the sprockets running true with the differential gear? |
| The aforegoing recommendation applies both to the driver sprocket and all idler sprockets in the loaded strand range. |
| Worn chains and sprockets may be working improperly long before they actually break. |
