Honda GX270H Manual page 80

62Z7B000.book 17 ページ ２０１２年９月２７日 木曜日 午前１０時２１分
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PILOT SCREW REPLACEMENT
Leave the pilot screw [1] and limiter cap [2] in place
during carburetor cleaning. Remove only if necessary
for carburetor repair.
Removal of the limiter cap requires breaking the pilot
screw. A new pilot screw and limiter cap must be
installed.
When the limiter cap has been broken off, remove the
broken pilot screw.
Place the spring on the replacement pilot screw, and
install it on the carburetor.
Turn the pilot screw in until it is lightly seated, then turn
the screw out the required number of turns.
GX270H:
identification Number = [3] + [4]
GX390H1:
identification Number = [3] + [4]
Refer to the appropriate shop manual for carburetor
pilot? screw initial opening setting.
Apply LOCTITE® 638 to the inside of the limiter cap,
then install the cap so the stop prevents the pilot screw
from being turned counterclockwise.
Be careful to avoid turning the pilot screw while
installing the limiter cap. The pilot screw must stay at its
required setting.
Carburetor Pilot screw
opening
BE70L A 2-1/8 turns out
BE70M A 2-3/4 turns out
BE75B C 2-1/8 turns out
BE75H A 2-7/8 turns out
BE78B A 2-1/8 turns out
BE98F A 2-5/8 turns out
BE98G A 2-7/8 turns out
BE98H A 2-7/8 turns out
Carburetor Pilot screw
opening
BE85T B 1-7/8 turns out
BE85U A 2 turns out
BE88P A 2-1/4 turns out
BE88Q A 2 turns out
BE89K A 2-1/4 turns out
BE89L A 2-1/4 turns out
FUEL SYSTEM
Pilot screw will break at narrow point.
[2]
CARBURETOR
BODY
STOP
[2]
[4]
[1]
[3]
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