M.T.H. Premier Bavarian Class 3/6 Express Operator's Manual page 41

If you experience poor or no smoke output when the smoke unit is on and has fluid,
check the wick to see if it has become hard, blackened, and unabsorbent around the
heating element. To remove the smoke unit you will first have to remove the boiler shell
(by removing the body mounting screws shown in Fig. 14 on pg. 38).
Figure 18
1. Once the boiler has been removed, remove the inspection cover (See figure 18). Inspect
the wick; if it is darkly discolored and hard, it should be replaced.
Replacement parts and wick replacement instructions are available directly from the
M.T.H. Parts Department phone: 410-381-2580; e-mail: parts@mth-railking.com
Mail: 7020 Columbia Gateway Drive, Columbia MD 21046-1532
Premier Bavarian Class 3/6 Express Steam Locomotive
Inspection Cover Screws
41