SF438,450
72
1. ENGINE
CHAPTER 10. TROUBLESHOOTING
Troubles
・ Starter motor
does not work.
・ Starter motor works but
engine does not start.
・ Engine runs at irregular
speeds or stalls soon.
・ Engine knocks.
Presumable causes
・ Operator is not sitting on the seat.
・ Engine food is opened.
・ Brake pedal is not depressed.
・ Battery is not charged fully.
・ Battery terminals are poorly connected.
・ Defective internal wiring in connector
・ Defective safety switch of seat
・ Broken starter switch
・ Broken starter motor
・ Cock of fuel filter is closed.
・ No fuel
・ Water trapped in fuel
・ Air trapped in fuel
・ Clogged fuel hoses
・ Clogged fuel strainer
・ Slow cranking speed
・ Insufficient pre-heating
・ Throttle lever is in low speed position.
・ Too high engine oil viscosity
・ Clogged air-cleaner
・ Insufficient compression
・ Incorrect injection timing
・ Clogged injection nozzles
・ Air trapped in fuel system
・ Improper earthing
・ Clogged fuel strainer
・ Leaking fuel system
・ Defective injection pump
・ Too low engine oil level
・ Engine is overheated.
・ Coolant temperature does not rise.
・ Defective injection pump
Remedies
・ Operator sits on the seat.
・ Close the engine food
completely.
・ Depress it fully.
・ Charge it.
・ Clean the terminal posts and
connect them securely.
・ Rewire.
・ Consult your dealer.
・ Consult your dealer.
・ Consult your dealer.
・ Open it.
・ Replenish with fuel.
・ Drain trapped water from
fuel filter.
・ Bleed injection pump.
・ Clean fuel hose inside.
・ Wash or replace it.
・ Charge battery.
・ Preheat for specified time.
・ Shift the throttle lever to middle
speed position.(middle of "Hi" and
"Low")
・ Replace it with one of lower
viscosity.
・ Clean element.
・ Consult your dealer.
・ Consult your dealer.
・ Consult your dealer.
・ Locate cause of air-
trapping and bleed system
of air.
・ Polish earthing points and
re-connect.
・ Clean or replace it.
・ Tighten joints securely or
replace damaged hose.
・ Consult your dealer.
・ Add oil to upper limit.
・ Consult your dealer.
・ Consult your dealer.
・ Consult your dealer.
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