Testing; Testing; Glow Plug Test - Toro Reelmaster 5100-D Service Manual

Testing

Glow Plug Test

CAUTION
Be careful while handling or testing glow
plugs. Glow plugs become extremely hot. Ac ­
cidental contact with the heated plug tip could
cause personal injury.
1. Disconnect the wire lead(s) to the glow plug.
2. Remove the glow plug.
3. Inspect the glow plug for signs of a burnt glow plug
end tube.
NOTE: If the metal of the glow plug end is melted, it is
a sign of cylinder overheating. (See Engine Overheats
in the Troubleshooting section of this chapter.)
4. Connect the positive (+) battery terminal to the glow
plug terminal, and the negative (–) battery terminal to
the plug body (Fig. 15). If the glow plug glows red-hot,
the glow plug is operating correctly.
5. Replace any glow plugs that do not operate correctly.

Testing

Page 3 - 18
Figure 15
®
Reelmaster 223-D/5100-D