Universal M-25XP - Page 178

TROUBLESHOOTING
.
Fuel filter clogged.
r
I
Fuel pipes broken or loose.
Air in pump .
.
Pump capacity not constant.
f---.+
Injection pump wrong.
~
Tappet roller and pin worn.
-
Delivery valve not completely oil-tight.
H
t-c
Fuel leaks from nozzle tip.
Injection nozzle faulty.
Fuel
not spraying properly.
~
Governor spring deformed.
L...,.
Valve clearance incorrect.
~
Injection pump or nozzle not functioning
normally.
L..
Compression pressure is different among cylinders.
r----+
Governor sleeve not sliding properly.
Governor not functioning
1---+
Fork lever not functioning normally.
normally.
j---.
Start spring deformed.
~
Control rack not sliding properly.
y
Idling maladjusted.
r-+
Idling regulator maladjusted.
L..
Accelerator rod maladjusted.
--'"
Main moving parts have almost seized up.
f----+
Engine overheated.
f----+
Injection mistimed.
~
Governor not functioning normally.
;---+
Filter clogged.
Fuel supply
insufficient.
f---.+
Fuel pipe broken or loose.
f---.+
Injection pump's capacity not enough.
~
Nozzle needle valve worn.
I
Compression pressure not
~
Air leaking.
I
enough.
L-. Air cleaner clogged.
173