I have a 1980s 281xp and i need a oil pump .i bought one but its not the same.thay say that its the one for it buts it not the same
Mar 06, 2011
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There were two pumps over the life of the 181/281, the difference is the oil pump drive gear opening in the pump body, if you have the old oil pump, you can fit the later one, but you will need to change the oil pump drive gear, the later gear is much larger, and seals into the pump body, the early pump had a small gear and the seal was in the back of the sprocket. The old pump part no. was 501802501 and the gear was 501803001, the later pump is part no. 503698101 and the gear is 503557501, you cannot mix and match these parts.