58
MAINTENANCE
SPARK PLUGS
SPARK PLUGS
Spark plugs should be removed and examined
periodically. Replace worn, fouled or damaged
spark plugs.
•
Remove spark plugs and inspect condition.
•
Set spark plug gap on new, replacement spark
plugs.
•
Apply
Electrical Grease
to the ribbed portion of
the spark plug ceramic and to the opening of
the spark plug cover to prevent corrosion.
Recommended spark plug and gap setting:
•
NGK
BKR6E @ 0.030 in. (0.8 mm).
Tighten spark plugs 20 ft. lbs. (28 N·m).
VALVE CLEARANCE
Measurement
Remove side covers. Refer to side cover
Remove recoil starter (rope start models). Refer to
starter
Remove flywheel cover (electric start models).
Remove spark plugs.
Remove eight screws and port/stbd cylinder head
covers.
Rotate the flywheel clockwise to bring each piston
to Top Dead Center (TDC) on compression stroke.
IMPORTANT:
Rotate the crankshaft in the nor-
mal running direction only (clockwise) to prevent
water pump impeller damage.
IMPORTANT:
The piston must be at its TDC
position on a compression stroke to check or
adjust valve clearance.
005542
1.
Cylinder head cover
2.
Cover screw
005543
1
2
Содержание Johnson BJ25E4SUC
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