SPARK PLUG
The type spark plug provided in your engine is listed as medium in the spark plJ
heat range chart - Prestolite 14-L7 or equivalent.(Prestolite 14RL7 or equivalent in Cana[
Shank Length 7/16 Inch (11.11 mm)
Thread Size 14 MM
Gap Setting 025 Inch (0.64 mm)
MOTE.
It IS possible that under unusual conditions, "colder" type
spark plug may be required. Consult your Authorized Case Dealer re
garding the proper type spark plug to use for your particular condition.
The spark plug plays a very important part in the power, fuel economy and generj
perlormance of your engine The outside of the plug should be cleaned frequently
prevent shorting of the plug
The spark plug should be removed, checked, cleaned and gapped at the end of
evei|
100 hours of operation.
REMOVING
It IS important to select the exact size spark plug wrench. The wrong size o-- tya
wrench may cause distortion and insulator breakage. Always use a spark plug wrench
thin wall deep socket wrench of the recommended size.
Thoroughly clean the spark plug,
includmg the threads, with a pen
knife or wire brush and solvent, A
very slight drag should be felt when
the gauge wire passes between the
electrodes.
Reset the gap by bending the side
electrode only. Never bend the center
electrode.
INSTALLING
Install the spark plug in the engine,
with a new gasket, and seat the plug
finger tight' on the gasket. Tighten the
plug about 3/4 of a turn after the plug
is seated firmly on its gasket If a
torque wrench is available, lighten the
plug to 27 foot pounds (36.6 Newton-
metre) . This will assure proper seating
and sealing of the spark plug.
THIS TYPE OF CRACi
USUALLY CAUSED el
1.
DROPPING PLUG
STRIKING PLUG'
WRENCH DURINGI
INSTALLATION
ROUND FEELER GAUGE
WILL GIVE A MORE
ACCURATE READING
FIGURE 16
Do not use abrasive cleaning
chines.
- 24-
To Next Page
Loading...
