Trouble Shooting Chart - Efco GST 250 Bedienungsanleitung

I
WARNING: Always stop unit and disconnect spark plug before performing all of the
recommended remedies below except remedies that require operation of the unit.
When you have checked all the possible causes listed and you are still experiencing the problem, see
GB
your Servicing Dealer. If you are experiencing a problem that is not listed in this chart, see your
Servicing Dealer for service.
PROBLEM
F
Engine will not start or will run
only a few seconds after starting.
D
Engine star ts but will not
E
accelerate properly or will not run
properly at high speed.
Engine does not reach full speed
SK
and / or emits excessive smoke
P
E n g i n e s t a r t s , r u n s a n d
accelerates but will not idle.
GR
Bar and Chain Running Hot and
TR
Smoking
CZ
RUS
UK
Engine starts and runs, but chain
is not rotating
PL
W A R N I N G : N e v e r
touch the chain while
the engine is running.
40
13. TROUBLESHOOTING
POSSIBLE CAUSE
1. No spark
2. Flooded engine.
Carburetor requires adjustment.
1. Check oil fuel mixture.
2. Air filter dirty.
3. Carburetor requires
adjustment.
Carburetor requires adjustment.
1. Chain oil tank empty.
2. Chain tension too tight.
3. Oiler function.
1. Chain brake engaged.
2. Chain tension too tight.
3. Guide bar and chain assembly.
4. Chain and/or guide bar
damaged.
5. Clutch drum and/or rim
sprocket damaged.
SOLUTION
1. Watch for spark at spark plug tip. If there
is no spark, repeat test with a new spark
plug (CMR7A).
2. Follow procedure page 28 If engine still
fails to start, repeat procedure with a
new spark plug.
Contact a Servicing Dealer for carburetor
adjustment.
1. Use fresh fuel and the correct 2-cycle oil
mix.
2. Clean per instruction in Maintenance-
Air Filter Section.
3. Co n t a c t a S e r v i c i n g D e a l e r fo r
carburetor adjustment.
Turn idle speed screw "T" (Fig. 28)
clockwise to increase idle speed.See
Operation-Carburetor Adjustment.
1. Oil tank should be filled every time that
fuel tank is filled.
2. Tension chain per instructions in
Operation-Chain Tension section
(Pag.25).
3. Run at full throttle 15 to 30 seconds.
Stop saw and check for oil dripping
from bar tip guard and guide bar. If oil
is present the chain may be dull or bar
may be damaged. If no oil contact a
Servicing Dealer.
1. Release chain brake, see Operation-
Chain Brake Section (Pag.29).
2. Tension chain per instructions in
Operation-Chain Tension section
(Pag. 25).
3. Refer to Assembly-Assembling the Bar
and Chain Section (Pag.25).
4. Refer to Maintenance-Chain and/or
Maintenance - Guide Bar Sec tion
(Pag.32).
5. Replace if necessar y - contact a
Servicing Dealer.