Burner Housing (continued)
Carefully remove any carbon deposits from the Burner components by gently scraping away the deposits taking
care not to damage the Fuel shaft and the Push Nut on the Fuel Shaft.
Do NOT use any metallic objects to clean the Push Nut. Compressed air jets
and/or cleaning spray (carburetor cleaner) is permitted. The use of a rifle bore
cleaning brush is also permitted.
Figure 5-3.14. Detail, Fuel Shaft
Note: REPLACE the Burner Housing if any of the following conditions are noticed:
The Push Nut rotates freely on the fuel shaft
The Fuel Shaft does NOT rotate freely
The Fuel Shaft wobbles as it rotates
The Magnet Cup leaks, or is badly scored
Note: IF the Magnet Cup leaks or is badly scored, check the Motor Magnet for
scoring and replace if necessary (ref. 5.2.7)