TOHATSU MFS 4D Service Manual page 211

4 stroke
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Trouble 4
Rough acceleration.
Rapid opening of throttle causes engine to stall.
Acceleration is not smooth.
Inspection of Carburetor, Ignition System and Compression Pressure
Check operation of throttle cable.
Is the throttle
valve tuned ?
YES
Disassemble carburetor,
and check internal components
for clogging, dirt and damage.
Any clogging,
dirt and/or damage?
YES
Clean carburetor
and/or replace
defective part(s)
with new one(s).
4st 4/5/6 2020
NO
Adjust throttle cable.
NO
Check ignition system and
compression pressure.
9
9-9

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