This is an authentic replacement part manufactured for use with small engines. Seals can deteriorate overtime, and it is recommended to replace worn seals when servicing an engine. This seal is the lower seal in the engine's sump, the seal is sold individually.
Drain oil, remove engine from mower, remove lower half of crankcase and pry out the old seal. Clean up the crankshaft, push the new seal into the lower half of the crankcase, then install the new gasket and bolt everything back together.
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very little compression ex. valve leaked
Hans from ARLINGTON, Texas
3 of 3 peoplefound this instruction helpful.
Difficulty Level:
Difficult
Total Repair Time:
More than 2 hours
Tools:
Nutdriver, Pliers, Screw drivers, Socket set, Wrench set
Completely disassembled engine cleaned all parts and repainted
honed the cylinder, regrind both valves
reassembled all parts by changing out all ordered parts.
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Seal leaking at out put shaft,letting oil drain out and locked the motor up.
joseph from charles town, West Virginia
1 personfound this instruction helpful.
Difficulty Level:
A Bit Difficult
Total Repair Time:
1- 2 hours
Tools:
Pliers, Screw drivers, Socket set, Wrench (Adjustable), Wrench set
Removed the crank case cover. Replaced the out put shaft seal and case gasket. Flushed the engine out with gunk motor flushing oil. Reset the coil clearance. Started the motor, ran for 1/2 hour, drained the oil and replaced with fresh oil. This repair saved me getting a new power washer that would cost around 400.00 dollars. The hardest p
... Read moreart was finding the m/n of the motor as I do not work on these very often.
1 removed spark plug wire for safety
2 drained oil
3 removed blade
4 had a hard time when I was removing blade hub had to heat up and pry off took some time
5 popped out leaky oil seal on engine bottom pan
6 cleaned shaft and oil from housing
7 installed new oil seal
Removed engine from push mower
Removed gas tank
Removed engine flywheel cover
Removed spark plug
Removed flywheel
Removed crankcase cover
Removed governor assembly and cam shaft
Disconnected piston rod end cap and pushed piston forward to clear path for crankshaft removal
Removed cranked sh
... Read moreaft
Cleaned all parts and engine crankcase
Replaced crankshaft lower seal
Oiled all parts during reassembled in reverse order. Torqued all bolts to spec.
Reinstalled engine onto mower, new oil, fresh gas and mowed the yard!
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Model Cross Reference
This part works with the following models:
ERP Number: ERP8960670
Manufacturer Part Number: 399781S
This part is in stock in our warehouse and will ship out within 1 business day of the order being placed.
New stock is on the way! On order parts usually ship within 7 business days.
Item is not in stock and usually ships 10-15 business days from the time you place your order.
This item is no longer being made by the manufacturer, and cannot be added to your shopping cart.
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Mail-In Recycling Rebate
Some of the parts we sell are eligible for mail-in rebates since we can recycle them. We will display any applicable rebates in your shopping cart. To redeem your rebate, contact Customer Service after you have received your part.
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