Toro Lawn-boy - Engine Starts Hard; Engine Runs Rich; Engine Runs Lean; Fuel Leaks From Carburetor

CARBURETOR
18
Troubleshooting
Engine Starts Hard
Possible Causes Remedies
Primer malfunction Repair or replace as necessary
No fuel in carburetor Add the proper fuel-oil mix
Carburetor bolts looseTi
g
hten bolts to 20 - 30 in.lbs. (2.2 - 6.2 Nm)
Mislocated
g
askets Loosen bolts, reali
g
n
g
askets, and ti
g
hten
Choke not closin
g
fully Adjust choke or throttle/choke cable
Engine Runs Rich
Possible Causes Remedies
Dirty air cleaner Clean or replace and re-oil air filter element
(DuraForce en
g
ines)
Dirt in carburetor Clean carburetor, fuel line and tank
Primer line pinched Inspect and correct problem
Dirt in primer vent Clean and/or replace as necessary
Choke not openin
g
fully Adjust choke or throttle/choke cable
Engine Runs Lean
Possible Causes Remedies
Carburetor bolts not ti
g
ht Ti
g
hten bolts to specifications
Crankcase
g
askets or seals leakin
g
Replace or reseal
Main jet partially clo
gg
ed Clean jet
Pilot jet or circuit clo
gg
ed Clean pilot jet and passa
g
es
Fuel Leaks From Carburetor (Leaking is continuous and fully drains fuel tank)
Possible Causes Remedies
Dirt under inlet needle Remove inlet needle and seat. Then clean or replace
and pressure check.
Bowl vent plu
gg
ed Remove bowl and clean with compressed air
Float sinkin
g
(heavy) Replace float
Float stuck (
g
ummed carburetor) Remove bowl and clean carburetor