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Spark Plug Maintenance
To ensure proper operation of the engine, the spark plug
must be provided with proper clearance and are free of
deposits.
1) Remove the spark plug wire.
2) Clean the dirt around the spark plug holder.
3) Remove the spark plug with a spark plug socket
wrench.
4) Visually inspect the spark plug. If it is damaged,
replace it with a new one. If the spark plug can still
be used, clean it with a wire brush.
5)
Measure the spark plug gap.
0.028-0.031in
Spark plug socket wrench
6) To prevent misalignment of the threads, screw the
spark plug into the screw hole by hand.
7) After the spark plug is screwed to the end, tighten it
with spark plug socket wrench.
a) To install a new spark plug, the user
should replace it according to the original
spark plug type. Thread the spark plug
into the engine until hand tight, then an
additionally 1/2 turn (after hand tight).
b) If a used spark plug is reinstalled, thread
the spark plug into the engine until hand
tight, then an additionally 1/8-1/4 turn
(after hand tight).
The spark plug must be tightened properly, or it may be
extremely hot and damage the engine.
Maintenance
Spark plug wire
CAUTION
Battery Replacement (Recoil Only Engines -
114593 (804313) and 114594 (804314)
To ensure efficient starting of the engine, the batteries will
need to be replaced periodically.
1) Remove Battery Cover Screws and Battery Cover.
2) Remove and replace batteries. Use two fresh 9V
(6LR61) batteries. Do not mix old/new ...
3) Replace Battery Cover and Battery Cover Screws
High Altitude Operation
One of the benefits of an EFI engines, is that it can
adjust fuel and air based on various ambient conditions.
For high altitude operation, no engine modification is
required.
For additional question go to www.northerntool.com or
contact us at 1-800-270-0810.
20
(2) 9V Batteries
(6LR61)
Battery Cover
Battery Cover Screw
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