NS3526
GB-12
•When replacing plugs, please use designated items.
CHAMPION (RCJ-6Y)
IMPORTANT
•If too much fuel is absorbed or poor quality oil is used,
the spark plug electrodes become dirty, making the
engine harder to start.
•Note that using any spark plug other than those des-
ignated may result in the engine failing to operate
properly or in the engine becoming overheated and
damaged.
•To install the spark plug, first turn the plug until it is
finger tight, then tighten it a quarter turn more with a
socket wrench.
■Adjusting the engine
Although the engine is adjusted on leaving the factory,
after repeated use it may sometimes require readjust-
ment or maintenance. Please consult your original sup-
plier regarding inspections and maintenance other than
those shown below.
• Idling speed
If the engine stalls or the pump continues to move
when in idling position with the throttle lever completely
lowered, readjust the engine speed using the idle
speed adjuster on the left of the carburetor.
a. idle speed adjuster
b. increase speed
c. reduce speed
•Turn the idling adjustment screw:
— counter-clockwise to reduce engine speed
— clockwise to increase engine speed
10. Maintenance
NOTE
•Warm up the engine before adjusting the idling speed.
•Throttle wire play
Throttle wire play should be 1 to 2 mm. After com-
pletely returning the throttle lever, take the throttle wire
at the carburetor end in your fingers and give a light
tug. If the play is too great or too small, readjust the
position of the wire retaining nut. Loosen the lock nut
and turn the wire retaining nut clockwise (screw in) to
increase the play and counter-clockwise (unscrew)
to reduce it. After adjusting, please fasten the wire
retaining nut by tightening the lock nut.
a. lock nut
b. wire retaining nut
c. wire sleeve
MUFFLER
WARNING
•Inspect periodically, the muffler for loose fasten-
ers, any damage or corrosion. If any sign of ex-
haust leakage is found, stop using the machine
and have it repaired immediately.
•Note that failing to do so may result in the engine
catching on fire.
PROCEDURES TO BE PERFORMED AFTER
EVERY 100 HOURS OF USE
1. Remove the muffler, insert a screwdriver into the vent,
and wipe away any carbon buildup. Wipe away any
carbon buildup on the muffler exhaust vent and cylin-
der exhaust port at the same time.
2. Tighten all screws, bolts, and fittings.
3. Check to see if any oil or grease has worked its way
in between the clutch lining and drum, and if it has,
wipe it away using oil-free, lead-free gasoline.
TIGHTENING TORQUE: 14.7 to 21.6 N.m.
(150 to 220 kgf-cm)