In step 2 the error case is determined by opening the starter but it is also possible to skip this step and carry on directly with step 3 without opening the starter (aka the "quick and dirty way").

1. Check that the starter is a glow starter by opening the starter-housing with a small cut parallel to the long side (see rectangular in second image). The housing is used again later on, so omit a complete destruction. If the disassembled starter looks like the second picture, it is a glow starter.

2. There are three different failure modes of a glow starter, those are:

-break-down of capacitor => effect: short circuiting the starter

-sputtered metal impurified gas => effect: switch won't close anymore

-bimetal strip fused to the other beam => switch won't open anymore, thus is short-circuited (as can be seen in the third picture)

3. The error that is addressed in this guide is a fused bimetal strip. To determine if the two beams fused together, one can have a closer look at the glow lamp. If the beams in the lamp touch each other, then the bimetal strip fused to the other beam (as can be seen in the third picture).