INTRODUCTION
3
Model and serial number
The model and serial number can be found on a
white sticker with a bar code. The sticker is located on
the right side of the engine at the bottom of the block.
See Figure 1.1.
NOTE: The serial number will always start with
the model number.
Figure 1.1
Model /serial number
Front of engine
Maintenance
The information in this manual applies to the MTD
snow engine. Some basic principles may apply to
engines produced by other manufacturers.
As the saying goes “an ounce of prevention is worth
a pound of cure”. The same can be said about preven
-
tive maintenance on outdoor power equipment. By
changing the spark plug and oil at recommended inter
-
vals many failures can be avoided.
NOTE: Please refer to Chapter 7: Ignition for the
complete service instructions on spark plugs.
1. The spark plug used in the MTD engine is a
Torch model F6RTC gapped to .026”-.030” (0.65
- 0.75 mm).
See Figure 1.2.
NOTE: Champion RN14YC or NGK BPR4ES
are physically similar but do not match the
F6RTC in heat range. This difference in heat
ranges will effect performance and emissions. It
is recommended that only the torch F6RTC plug
be used in MTD engines.
2. Wear rate will vary somewhat with severity of
use. If the edges of the center electrode are
rounded-off, or any other apparent wear / dam
-
age occurs, replace the spark plug before oper-
ating failure (no start) occurs.
.
Figure 1.2
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