Carburetor Inspection and Adjustment
WM 80 Repair
96
wc_tx000522gb.fm
8
Carburetor Inspection and Adjustment
8.1
Inspection
Diaphragms:
•
Check for tears, punctures, and distortion in the elastic material.
Replace the diaphragm if it appears stretched or puckered.
•
Be certain diaphragms are installed correctly. See appropriate
exploded view. On Walbro and Tillotson carburetors, be sure that
the control diaphragm is connected to the inlet lever.
•
Evenly tighten all screws securing the diaphragm covers to
ensure good seal and avoid leaks.
•
Complete repair kits are available: P/N 0171010—Walbro carbu-
retors; P/N 2005690—Tillotson carburetors; P/N 0065689—Bing
carburetors.
Inlet Needle Valve:
•
The inlet needle must seal properly or the engine may flood or
run rich. The elastic tip must be in good condition. Replace the
needle if the tip becomes hard or brittle.
•
Keep the seating area clean and free from dirt. Clean it using
compressed air.
Control Lever Spring:
•
Be certain that the spring is seated correctly under the inlet lever
and that it has enough tension to seat the inlet needle. Replace
the spring if worn or broken. Do not stretch the spring.
Adjustable Mixture Needle Valves (Tillotson):
•
On Tillotson carburetors with adjustable mixture needle valves,
the valves must have absolutely smooth points. Replace the nee-
dle valves if the taper appears worn or damaged.
NOTICE
:
Do not turn in the adjusting screws too tight or the valve
seats may be damaged.
Fixed Jets:
•
Clean the jet orifice using compressed air. Use a narrow screw-
driver when installing jets to avoid shaving metal from inside of
the carburetor body which could plug the jet orifice.
Summary of Contents for WM 80
Page 1: ...0162695en 003 0610 0 1 6 2 6 9 5 E N Repair Manual Engine WM 80...
Page 4: ...Foreword 4 wc_tx001528gb fm...
Page 27: ...WM 80 Maintenance wc_tx000520gb fm 27 wc_gr001168 a b c d k i h...
Page 35: ...WM 80 repair Starting and Ignition wc_tx000521gb fm 35 wc_gr002882 a d e b c...
Page 41: ...WM 80 repair Starting and Ignition wc_tx000521gb fm 41 wc_gr002885 S N d a c b...
Page 43: ...WM 80 repair Starting and Ignition wc_tx000521gb fm 43 wc_gr002886 a d f f e k c g i h j b...
Page 63: ...WM 80 Repair Carburetor Basics wc_tx000522gb fm 63 Notes...
Page 65: ...WM 80 Repair Carburetor Basics wc_tx000522gb fm 65 d d d d d 1 2 3 e 4 f g 5 6 h wc_gr007414...
Page 71: ...WM 80 Repair Carburetor Replacement wc_tx000522gb fm 71 Notes...
Page 109: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 109 wc_gr002935 d a b e c d...
Page 111: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 111 wc_gr002937 a b d e c f...
Page 113: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 113 wc_gr002941 a b c...
Page 119: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 119 wc_gr002940 a c d e f b...
Page 121: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 121 b c f e g d c wc_gr002907...
Page 123: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 123 h wc_gr002908...
Page 127: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 127 a wc_gr002910 b OK OK...
Page 129: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 129 wc_gr002911 a b c e f d g h...
Page 131: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 131 wc_gr002912 f e a h g d a b c a f e...
Page 133: ...WM 80 Repair Disassembly and Assembly wc_tx000523gb fm 133 a c d wc_gr002913 e b...
Page 135: ......