Cobra 2007 King 50 Service Manual page 60

10. Heat engine case around area of impeller lightly with a small propane torch.
Using a 3/8" diameter x 8" long steel rod, tap impeller assembly out of engine as
shown in figure 39.
CAUTION:
Too much heat can be detrimental to the engine cases.
11. The shaft assembly is serviceable. Use a 4mm hex key to remove impeller
retainer screw. Remove impeller, seal and both bearings. Check shaft for wear in
the area of the seal. If there is any sign of wear (like a groove) replace the shaft.
12. Reinstall new bearings, seal (open side toward impeller) and impeller. Clean all
threads and use green (wicking / bearing retainer) thread locker.
13. Using a liberal amount of grease on the outside seal, bearings and inside of
case, reinstall bearing assembly by using a 0.500" ID by 1.000" OD steel tube 2"
long and tap on end of tube per figure 41.
14. Re-assemble in reverse order of disassembly.
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Figure 38
Figure 39
Figure 40
Figure 41