Rato R160, Service Manual

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2
Ÿ
Turn the fuel cock to “OFF” position, and drain the gasoline of the carburetor.
Ÿ Remove the spark plug and spark plug cap.
Ÿ
Pull the recoil start handle to drive off the gas out of the cylinder.
Ÿ Install the spark plug cap.
Ÿ Put the control lever to “low” position.
Ÿ Put negative pole (thread) of the spark plug through cylinder cover to connect to ground and
pull the recoil start handle to observe the spark.
4-1-2 Engine lacks power
TROUBLE CAUSE REMEDY
When increasing
throttle opening,
speed increases
slowly or even
decreases and stops
running
Ignition
system
Fuel supply
system
Air in fuel line or fuel line is
clogged
Drain air or unclog fuel line
Main jet is not adjusted properly Readjust
In carburetor, needle valve and
main jet are clogged.
Clean and blow to get through
Fuel cock is clogged. Clean, replace damaged part
Too much carbon deposit in
combusting chamber.
Clear away
Air cleaner is clogged. Clean air cleaner filter element
Intake pipe is leaking Repair or replace
Poor
compression
Intake pipe is leaking Repair or replace
Piston, cylinder or piston ring is
worn
Replace the worn part
Air leakage from the surface along
which cylinder block contacts with
cylinder head.
Replace cylinder gasket
Too big or too small valve
clearance.
Readjust
l Compression pressure check