Homelite UT10552 manual BAR and Chain Combinations

Page 32

BAR AND CHAIN COMBINATIONS

Chain specifications: .325 in. pitch, .05 in. chain gauge, 72 drive links

 

Length of Bar

Guide Bar Part Number

Chain Part Number

18 in.

308626001

900920007

TROUBLESHOOTING

Problem

Possible Cause

 

Solution

 

 

 

 

Engine will not start.

No spark.

 

Check spark. Remove air filter cover. Remove spark plug from

[Make sure ignition

 

 

cylinder. Reattach the spark plug wire and lay spark plug on top

switch is in the RUN

 

 

of cylinder with the metal part of plug touching the cylinder. Pull

( l ) position.]

 

 

the starter rope and watch for spark at spark plug tip. If there is no

 

 

 

spark, repeat test with a new spark plug.

 

Engine is flooded.

With the ignition switch OFF, remove spark plug. Move choke

 

 

 

lever to RUN position (pushed in completely) and pull starter cord

 

 

 

15 to 20 times. This will clear excess fuel from engine. Clean and

 

 

 

reinstall spark plug. Set ignition 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

 

 

 

HALF CHOKE and repeat normal starting procedure. If engine still

 

 

 

fails to start, repeat procedure with a new spark plug.

 

 

 

Engine starts but will

Carburetor requires “L”

Contact an authorized service center for carburetor adjustment.

not accelerate prop-

(Low Jet) adjustment.

 

 

erly.

 

 

 

 

 

 

 

Engine starts, then

Carburetor requires “L”

Contact an authorized service center for carburetor adjustment.

dies.

(Low Jet) adjustment.

 

 

 

 

 

Engine starts but will

Carburetor requires “H”

Contact an authorized service center for carburetor adjustment.

not run properly at

(High Jet) adjustment.

 

 

high speed.

 

 

 

 

 

 

 

Engine does not reach

Oil/fuel mixture incorrect.

Use fresh fuel and the correct 2-cycle oil mix ratio.

full speed and/or emits

Air filter is dirty.

 

Clean air filter. Refer to Cleaning the Air Filter in the Maintenance

excessive smoke.

 

 

 

section of this manual.

 

 

 

 

Spark arrestor screen is

Clean spark arrestor screen. Refer to Cleaning the Spark Arresting

 

dirty.

 

Muffler in the Maintenance section of this manual.

 

Carburetor requires “H”

Contact an authorized service center for carburetor adjustment.

 

(High Jet) adjustment.

 

 

 

 

 

 

Engine starts, runs,

C a r b u re t o r

re q u i re s

Turn idle speed screw “T” clockwise to increase idle speed.

and accelerates but

adjustment to idle speed.

Refer to Adjusting the Carburetor in the Maintenance section of

will not idle.

 

 

this manual.

Chain turns at idle.

C a r b u re t o r

re q u i re s

Turn idle speed screw “T” counterclockwise to decrease speed.

 

adjustment to idle speed.

Refer to Adjusting the Carburetor in the Maintenance section of

 

 

 

this manual.

 

Air leak in the intake

Contact an authorized service center for a rebuild kit.

 

system.

 

 

 

 

 

 

 

 

 

 

 

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Page 31 Page 33
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Page 31 Page 33
Contents OPERATOR’S Manual UT10552Table of contents IntroductionGeneral safety rules Read ALL InstructionsKickback Specific safety rulesRefueling do not Smoke Symbols Symbol NameService Glossary of terms Release FeaturesProduct Specifications Assembly Operation ApplicationsHandling the Fuel Safely Mixing the FuelFilling the Fuel Tank Adding BAR and Chain OILOperating the Chain Brake See Figures 4Ignition switch Starting the EngineSee Figures 6 RUN PositionThrottle Lock button Trigger Ignition switch Stop Stopping the EngineTo Start a Warm Engine See Figures 12Idle speed screw T Pull Push Adjusting Idle SpeedPull and Push See Figures 16 Kickback PrecautionsProper Grip on Handles Work Area Precautions Basic OPERATING/CUTTING ProceduresProper Cutting Stance UndersideSee Figures 21 Proper Procedure for Tree FellingHazardous Conditions Removing Buttress Roots BuckingHinge Back CUT Wedge Vertical Cut Loose SectioN Horizontal KickbackBucking with a Wedge Bucking Logs Under StressOverbucking Finishing CUTUnderbucking Limbing and PruningCutting Springpoles See Figures 31Maintenance General MaintenanceLubrication See Figures 34BAR Groove Chain Drive Links Chain Drive LinksSprocket Flats on Drive Links Adjusting the Chain TensionSee Figures 44 Chain Maintenance See Figures 47≈ .050 in .25 mm 050 1.25 mm Raker Depth Gauge ClearanceLeft Hand Cutters Right Hand Sharpening the CuttersSee Figures 49 TOP Plate Filing Angle Side Plate AngleMaintaining Depth Gauge Clearance SeeMaintaining the Guide BAR Mounting the SAFE-T-TIP Nose GuardMaintaining the SAFE-T-TIP Nose Guard See Figures 59Cleaning the AIR Filter See Figures 61Adjusting the Carburetor Cleaning the Starter UnitBefore adjusting the carburetor See Figures 64Cleaning the Engine Checking the Fuel FilterReplacing the Spark Plug See Figures 67Deflector Retaining ScrewS PlateBAR and Chain Combinations Troubleshooting Call US FirstWarranty Limited Warranty StatementMANUFACTURER’S Warranty Coverage OWNER’S Warranty ResponsibilitiesMaintenance Requirements CoverageEmissions Maintenance Schedule and Warranted Parts List AIR Filter AssyCarburetor Assy Fuel Tank AssyPage California Proposition Model NumberSerial Number UT10552
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