What to Do if Your
Engine Idles Too High
What if your engine runs too
fast … or if the tines turn the
instant you start the Tiller? You
may need to adjust the idle
screw (Key #19 under
Carburetor on page 28) by itself
right below the H and L screws.
Gently turn it counter-
clockwise. You’ll know you’ve
adjusted it correctly when the
axles do not turn at low idle.
What to Do if Your
Engine Runs “Rough”
If your engine runs “rough”
or stalls, you may need to adjust
the carburetor and idle screws.
If you remove the air-cleaner
cover, you’ll see the two
carburetor, adjustment screws
next to the choke button.
(Picture 1)
The “RED” screw is the
HIGH-speed adjustment…The
“WHITE” screw is the low
speed adjustment.
First, remove the tines from
the axle. Then start engine. Let
it run for two to three minutes.
“FLASH” the choke several
times during the warm-up to
clear any air from the Fuel
system.
Then stop the engine after it
reaches operating temperature.
Now, turn the RED, high-
speed screw counter-clockwise
all the way to stop…Then turn
the WHITE, low speed screw
halfway between the counter-
clockwise and clockwise stop
positions.
Now restart the engine to
finish the carburetor
adjustment.
Run the engine at full speed
two or three seconds to clear
out any excess fuel. Then return
to idle.
Now, accelerate the engine to
full throttle several times to
check for a smooth transition
from idle to high speed.
If the engine hesitates turn
the WHITE, low-speed screw
counter-clockwise one-eighth of
a turn. Then accelerate the
engine.
Repeat the adjustment until
you get a smooth transition to
high speed.
Picture 1
19
WARNING•DANGER
REMOVE TINES BEFORE
STARTING ENGINE AND
MAKING ADJUSTMENTS
MAINTENANCE
(continued)
!
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401773 Vesey Tiller NewHndl 5YW_Mantis Tiller Manual Grn 401703 12/15/10 3:10 PM Page 19
