en
CMR7A
28
MAINTENANCE
CAUTION: Never run the engine without the air filter,
serious damage could result.
Make sure the air filter is correctly placed in the air
filter cover before reassembly.
Always replace damaged filters. Do not clean a filter
with a brush.
78
Starter Unit
WARNING: The coil spring is under tension and
could fly apart causing serious injuries. Never try to
disassemble or modify it.
Engine
Clean the cylinder fins with compressed air or a brush periodically.
Dangerous overheating of engine may occur due to impurities on
the cylinder.
WARNING: Never run the machine without all the
parts, including the starting housing, securely in
place.
Because parts can fracture and pose a danger of
thrown objects, leave repairs to the flywheel and
clutch to trained Servicing Dealers.
Spark Plug
This engine uses a NGK CMR7A with .02" (0.5 mm) electrode gap
(Fig. 78). Use an exact replacement and replace every six months
or more frequently, if necessary.
WARNING: Never test the ignition system with
ignition wire connector removed from spark plug
or with unseated spark plug, since uncontained
sparking may cause a fire. A loose connection
between spark plug terminal and ignition wire
connector in the boot may create arcing that could
ignite combustible fumes and cause a fire.
Use only resistor type spark plugs of the approved range.
Factors such as:
- too much oil in fuel mix;
- dirty air filter;
- unfavourable running conditions, e.g. operating at part load;
may result in rapid deterioration of the spark plug.
Muffler
WARNING! – This muffler is fitted with a catalytic
converter needed for the engine to be in compliance
with the emissions requirements. Never modify or
remove the catalytic converter: failure to do so is a
violation of law.