Homelite UT10947E - Manual (Page 34)

Page 34
Note: The carburetor adjustment needle(s) are equipped with
plastic cap(s) that prevent counterclockwise rotation from the
original factory adjustment. If your product exhibits specific
performance problem(s) where the Troubleshooting Section
recommends a counterclockwise needle adjustment and you
have made no adjustments since the original purchase, take
the product to a factory authorized service center for repair.
In most cases, the needed adjustment is a simple task for the
factory trained service representative.
Fig. 79
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Engine does not reach
full speed and/or emits
excessive smoke.
Engine starts, runs, and
accelerates but will not
idle.
Chain turns at idle.
Bar and chain running
hot and smoking.
Engine starts and runs,
but chain is not rotating.
1. Oil / Fuel mixture is incorrect.
2. Air filter is dirty.
3. Spark arrester screen is dirty.
4. Carburetor requires “H” (High
jet) adjustment.
Carburetor requires adjustment.
Carburetor requires adjustment.
1. Chain oil tank empty.
2. Chain tension is too tight.
3. Oiler is not functioning.
1. Chain brake is engaged.
2. Chain tension is too tight.
3. Guide bar and chain assem-
bled incorrectly.
4. Guide bar and/or chain are
damaged.
1. Use fresh fuel and the correct 2-cycle oil mix ratio.
2. Clean air filter. Refer to “Maintenance – Cleaning
the Air Filter” earlier in this manual.
3. Clean spark arrestor screen. Refer to “Maintenance
– Cleaning the Spark Arresting Muffler” earlier in
this manual.
4. Contact a Homelite Service Center for carburetor
adjustment.
Turn idle speed screw “T” clockwise to increase idle
speed. See Figure 79.
Turn idle speed screw “T” counterclockwise to de-
crease speed. See Figure 79.
1. Oil tank should be filled every time that fuel tank is
filled.
2. Tension chain per instructions in “Maintenance –
Adjusting the Chain Tension” earlier in this manual.
3. Run at half throttle 30 to 45 seconds. Stop saw and
check for oil dripping from SAFE-T-TIP and guide
bar. If oil is present the chain may be dull or bar
may be damaged. If no oil is on the SAFE-T-TIP,
contact a Homelite Service Center.
1. Release chain brake, refer to “Operation –
Operating Chain Brake” earlier in this manual.
2. Tension chain per instructions in “Maintenance –
Adjusting the Chain Tension” earlier in this manual.
3. Refer to “Maintenance – Assembling the Bar and
Chain” earlier in this manual.
4. Inspect guide bar and chain for damage.