This past weekend I fixed the opener in about three hours and I highly recommend the: Liftmaster Gear and Sprocket Assembly Kit Part Number 41C4220A.

I also bought Sears Craftsman Liftmaster Garage Door Opener Gear Kit – Part #41A2817 as well because my house has two LiftMaster openers.  But I found the sprocket solution to be better in this case as I could just drop it in.  I now have the extra stripped sprocket which I can use with the extra part kit to replace the stripped gear and reuse it on my second opener when and if that fails.

The Liftmaster Gear and Sprocket Assembly Kit Part Number 41C4220A comes with a decent checklist of the steps needed to replace the failed nylon gears.   However this checklist was missing key pictures or diagrams that could have sped along the repair.

One big help in choosing this solution was the reviews found on Amazon.  

Here are some photos which should add more detail to those directions. The one in particular is the break down and order of parts when dismantling the engine assembly (which has the spinning RPM limiter plastic piece).

Installed under my front porch is a 300 gallon rainwater collector and is modeled after my Dad’s rain barrel.  The main difference between ours is the pump is not hooked up to a pressure sensor.  Rumor has it that the pumps used do better when there is a continuous flow of water through them (even though restricted) in order to keep them cool.   We will see how each approach lasts over time.

The crazy part is this 300 gallon container was filled after one light North Carolina rain when only one rain gutter is the supply.   The hope is to finally keep the front lawn green by watering more

Parts list:

300 Gallon Rain Barrel with continuous run 1/2 HP Pump

• Agri-Supply, Round End Tank, 3′ X 2′ X 8′, WT328, 29074, $194.95
• Northern Tool Clear Water Pump, 109955, $49.99
• Home Depot/Lowes 1″ Foot Valve
• 10 foot PVC 1″
• PVC connectors: (3) 1″ 45, (1) 1″ Female to 1″ Male thread for foot valve, (1) 1″ Female to 3/4″ Male thread to hose connector, 1″ PVC Union, 1″ PVC Ball Valve, 1″ PVC T with 1/2 thread connector on T for return to tank
• 3/4″ brass thread female to hose bib connector, Watts A-669, 3/4″ MH x 3/4″ FIP
• 1/2″ brass male thread both ends, connect from T to PVC Valve
• 1/2″ brass male thread to 3/8 nipple, connect other side of PVC valve to 3/8 plastic tubing back to tank
• 10 foot 3/8 clear plastic tubing
• Top, (12) 6′ Cedar Dog Eared Fencing, I only found this at the Home Depot in Knightdale.
• Gorilla Glue for top, (1) box 1/2 brass screws for top, aluminum screen for top opening for gutter feed
• - Weatherproof Red Dot electrical outlet box and switch box, 1/2 inch