I use a Sears 2-wheeled 5hp string trimmer to cut down heavy weeds on the farm. Last week the engine threw a rod and knocked a hole in the casing. She's dead, Jim.
Anyway, Sears wants $260 for a new engine which is about 2x what the engine should cost so I'm going to replace it myself. I wasn't able to remove the pulley from the crankshaft, even after heating with a blowtorch, so I couldn't measure the crankshaft. I know the upper part of the crankshaft is 7/8" and it looks like it has one key slot but I can't tell how long the crankshaft is or whether it's tapered.
The engine's decal says the following:
Engine model: 143995002
Engine family: WTPXS 1851BA
This is different from most other Tecumseh codes I've seen.
Google only returns a few references to the WTPXS family and none of those appear to list any specifications.
Anybody have a document with the crankshaft specs for this engine?
Anyway, Sears wants $260 for a new engine which is about 2x what the engine should cost so I'm going to replace it myself. I wasn't able to remove the pulley from the crankshaft, even after heating with a blowtorch, so I couldn't measure the crankshaft. I know the upper part of the crankshaft is 7/8" and it looks like it has one key slot but I can't tell how long the crankshaft is or whether it's tapered.
The engine's decal says the following:
Engine model: 143995002
Engine family: WTPXS 1851BA
This is different from most other Tecumseh codes I've seen.
Google only returns a few references to the WTPXS family and none of those appear to list any specifications.
Anybody have a document with the crankshaft specs for this engine?
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