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TROUBLESHOOTING
BAR AND CHAIN COMBINATIONS
Chain specifications: 3/8 in. pitch, .05 in. chain gauge
Length of Bar Guide Bar Part Number Chain Part Number Drive Links
14 in. 310625004 901212001 52
16 in. 310626004 901212002 56
18 in. 310627004 671258001 62
Problem Possible Cause Solution
Engine will not start.
[Make sure on/stop
switch is in the RUN
( l ) position.]
No spark.
Engine is flooded.
Clean or replace spark plug. Reset spark plug gap. Refer to Spark
Plug Replacement earlier in this manual.
With the on/stop switch OFF, remove spark plug. Move
choke lever to RUN position (pushed in complete-
ly) and pull starter cord 15 to 20 times. This will clear ex-
cess fuel from engine. Clean and reinstall spark plug. Set
on/stop switch to RUN ( l ) position. Push and fully release primer
bulb 7 times. Pull starter three times with choke lever at RUN. If
engine does not start, move choke lever to FULL CHOKE and re-
peat normal starting procedure. If engine still fails to start, repeat
procedure with a new spark plug.
Engine starts but will
not accelerate prop-
erly.
Carburetor requires “L”
(Low Jet)
adjustment.
Contact an authorized service center for carburetor adjustment.
Engine starts, then
dies.
Carburetor requires “L”
(Low Jet)
adjustment.
Contact an authorized service center for carburetor adjustment.
Engine starts but will
not run properly at
high speed.
Carburetor requires “H”
(High Jet)
adjustment.
Contact an authorized service center for carburetor adjustment.
Engine does not reach
full speed and/or emits
excessive smoke.
Lubricant/fuel
mixture incorrect.
Air filter is dirty.
Carburetor requires “H”
(High Jet)
adjustment.
Use fresh fuel and the correct 2-cycle lubricant mix ratio.
Clean air filter. Refer to Cleaning the Air Filter in the Maintenance
section of this manual.
Contact an authorized service center for carburetor adjustment.
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