Homelite UT10512 manual

OPERA TOR’S MANUAL 14 in. 33cc CHAIN SA W UT10012 / UT10512 16 in. 33cc CHAIN SA W UT10032 / UT10532 SA VE THIS MANUAL FOR FUTURE REFERENCE Y our chain saw has been engineered and manufactured to Homelite’ s high standard for dependability , ease of operation, and operator safety . When properly car ed for , it will give you years of rugged, tr[...]

2 3 n Introduction ..................................................................................................................................................................... 2 � n General Safety Rules ............................................................... ........................................................................[...]

2 3 WARNING: Read and understand all instructions . Failur e to follow all instructions listed below , may result in electric shock, fire and/or serious personal injury . READ ALL INSTRUCTIONS n Know your tool. Read the operator’s manual carefully. Learn the saw’s applications and limitations as well as the specific potential hazards related to[...]

4 5 SPECIFIC SAFETY RULES WARNING: The warnings, labels, and instructions found in this sec- tion of the operator’ s manual are for your safety . Failure to follow all instructions may result in serious personal injury . n Do not cut vines and/or small underbrush (a diameter of less than 3 in.). n Muffler surfaces are very hot during and after op[...]

4 5 Some of the following symbols may be used on this tool. Please study them and lear n their meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer . Read The Operator’ s Manual Safety Alert SYMBOL NAME DESIGNA TION/EXPLANA TION T o reduce the risk of injury , user must read and understand operator?[...]

6 7 SERVICE Servicing r equires extr eme care and knowledge and should be performed only by a qualified service technician. For service we suggest you return the product to your nearest AUT HOR IZE D SER VIC E CEN TER for re pai r . Whe n ser vic ing , use only identical replacement parts. WARNING: SA VE THESE INSTRUCTIONS The following signal word[...]

6 7 GLOSSAR Y OF TERMS Bar Tip Guard An attachment that may be provided on the end of the guide bar to prevent the chain at the end of the guide bar from contacting the wood. Bucking The pr ocess of cross cutting a felled tr ee or log into lengths. Chain Brake A device used to stop the saw chain. Chain Saw Powerhead A chain saw without the saw chai[...]

8 9 PRODUCT SPECIFICA TIONS FEA TURES UT10012/UT10512 Bar length ................................................................... 14 in. Chain pitch ............................................................. .375 in. Chain gauge ........................................................... .050 in. Chain type ...................................[...]

8 9 WARNING: If any parts ar e missing do not operate this tool until the missing parts ar e r eplaced. Failure to do so could r esult in possible serious personal injury . WARNING: Do not attempt to modify this tool or create accesso- ries not recommended for use with this tool. Any such alteration or modification is misuse and could result in a h[...]

10 11 FUEL AND REFUELING HANDLING THE FUEL SAFEL Y WARNING: Chec k for fuel leaks. If any are found , corre ct them befor e using the saw to prevent fir e or burn injury . n Always handle fuel with care; it is highly flammable. n Always refuel outdoors and do not inhale fuel vapors. n Do not let gasoline or oil come in contact with skin. n Kee p ga[...]

10 11 FILLING THE FUEL T ANK See Figure 2. n Clean the surface around the fuel cap to prevent con- tamination. n Loosen the fuel cap slowly. n Carefully pour the fuel mixture into the tank. Avoid spill- age. n Prior to replacing the fuel cap, clean and inspect the gasket. n Immediately replace the fuel cap and hand tighten. Wipe up any fuel spillag[...]

12 13 OPERA TION ST ARTING THE ENGINE See Figures 6 - 11. Starting the product differs depending on whether the engine is cold or warm. WARNING: Kee p you r body t o the lef t of the chain line. Never stra ddle the saw or chain, or lean over past the chain line. n Place the chain saw on level ground and ensure that no objects or obstructions are in[...]

12 13 OPERA TION n Push choke lever to HALF choke position. n Pull starter grip until engine runs. NOTE: Allow the saw to run in this position 15-30 sec- onds, depending upon the temperature. n Push choke lever all the way in to the RUN position. n Squeeze and release the throttle trigger to return the engine to idle. CAUTION: Failure to release pa[...]

14 15 ADJUSTING IDLE SPEED See Figure 14. n If the engine starts, runs, and accelerates, but will not idle, turn the idle speed screw “T” clockwise to increase idle speed. n If the chain turns at idle, turn the idle speed screw “T” counterclockwise to reduce the idle RPM and stop the ch ain mov emen t. If the saw cha in sti ll mov es at idl[...]

14 15 OPERA TION KICKBACK PRECAUTIONS See Figures 16 - 17. Rotational kickback occurs when the moving chain contacts an object at the Kickback Danger Zone of the guide bar . The result is a lightning-fast reverse reaction, which kicks the guide bar up and back towar ds the opera tor . This rea ction can cause loss of control, which can r esult in s[...]

16 17 STRAIGHT ARM CHAIN LINE THUMB ON UNDERSIDE OF HANDLE BAR Fig. 19 Fig. 20 OPERA TION PROPER CUTTING ST ANCE See Figure 19. � n Balance your weight with both feet on solid ground. n Keep left arm with elbow locked in a “straight arm” posi- tion to withstand any kickback force. n Keep your body to the left of the chain line. n Keep your th[...]

16 17 OPERA TION FELLING TREES HAZARDOUS CONDITIONS WARNING: Do not fell trees during periods of high wind or heavy precipitation. Wait until the hazardous weather has ended. When felling a tree, it is important that you heed the following warnings to prevent possible serious injury . � n Do not cut down trees having an extreme lean or large tree[...]

18 19 WEDGE Fig. 24 HORIZONT AL CUT VERTICAL CUT LOOSE SECTION Fig. 25 KICKBACK Fig. 26 OPERA TION n On large diameter trees, stop the back cut before it is deep enough for the tree to either fall or settle back on the stum p. The n ins ert soft wood en or pla stic wedg es into the cut so they do not touch the chain. Drive wedges in, little by litt[...]

18 19 OPERA TION BUCKING WITH A WEDGE See Figure 27. If the wood diameter is lar ge enough for you to insert a soft bucking wedge without touching the chain, you should use the wedge to hold the cut open to prevent pinching. NOTE: When bucking or felling with a wedge, you may need to remove the SAFE-T-TIP anti-kickback device to allow the bar to be[...]

20 21 UNDERBUCKING See Figure 30. Begin on the under side of the log with the top of the saw against the log; exert light pressure upward. During under- buc king, the saw will tend to pus h back at you . Be prepa red for this reaction and hold the saw firmly to maintain control. LIMBING AND PRUNING See Figures 31 - 32. n Work slowly, keeping both h[...]

20 21 WARNING: When servicing, use only identical Homelite replacement parts. Use of any other parts may create a hazard or cause product damage. WARNING: Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If operation is dusty , also wear a dust mask. GENERAL MAINTENANCE Avoid using sol[...]

22 23 CHAIN TENSIONING SCREW Fig. 40 BAR GROOVE CHAIN DRIVE LINKS Fig. 38 MAINTENANCE CUTTERS CHAIN ROT A TION CHAIN DRIVE LINKS Fig. 37 ADJUSTING PIN BAR STUDS CLUTCH COVER SPROCKET Fig. 39 CHAIN TENSIONING PIN HOLE n Wear gloves when handling the chain and bar. These components are sharp and may contain burrs. n Remove the bar mounting nuts using[...]

22 23 MAINTENANCE Fig. 41 Fig. 42 Fig. 43 n Position the chain so there is a loop at the back of the bar. n Hold the chain in position on the bar and place the loop around the sprocket. n Fit the bar flush against the mounting surface so that the bar studs are in the long slot of the bar. NOTE: When placing the bar on the bar studs, ensure that the[...]

24 25 Fig. 47 RAKER (DEPTH GAUGE) CLEARANCE ≈ . 050 in. (1.25 mm) ≈ .050 (1.25 mm) Fig. 46 Fig. 45 Fig. 48 INSPECT DRIVE SPROCKET MAINTENANCE n Retension the chain whenever the flats on the drive links hang out of the bar groove. NOTE: During normal saw operation, the temperature of the chain increases. The drive links of a correctly ten - sion[...]

24 25 MAINTENANCE SHARPENING THE CUTTERS See Figures 49 - 52. Be careful to file all cutters to the specified angles and to the same length, as fast cutting can only be obtained when all cutters are uniform. WARNING: The saw chain is very sharp. Always wear pr otective gloves when performing maintenance to the chain to prevent serious personal inju[...]

26 27 INCORRECT MORE THAN 30° TOP PLA TE FILING ANGLE LESS THAN 30° Fig. 53 30° CORRECT INCORRECT BACKWARD SLOPE SIDE PLA TE FILING ANGLE Fig. 54 80° CORRECT HOOK FLA T FILE DEPTH GAUGE JOINTER Fig. 56 RESTORE ORIGINAL SHAPE BY ROUNDING THE FRONT Fig. 57 MAINTENANCE TOP PLA TE FILING ANGLE See Figure 53. n CORRECT 30° – file holders are mark[...]

26 27 MAINTENANCE MAINT AINING THE GUIDE BAR See Figure 58. CAUTION: Make su re the chai n ha s stopped be for e yo u do any work on the saw. Every week of use, reverse the guide bar on the saw to distribute the wear for maximum bar life. The bar should be cleaned every day of use and checked for wear and damage. Feathering or burring of the bar ra[...]

28 29 MAINTENANCE CLEANING THE AIR FIL TER See Figures 61 - 63. n For access to the air filter and carburetor area, loosen the three screws holding the cylinder cover. n Activate chain brake. n Lift the front of the cylinder cover past chain brake lever. n Lift the back of the cylinder cover past the handle. n Before removing the air filter from th[...]

28 29 MAINTENANCE ADJUSTING THE CARBURETOR See Figures 64 - 66. Before adjusting the carbur etor: n Use a brush or compressed air to clean the starter cover vents. n Clean the air filter. Refer to Cleaning the Air Filter in the Maintenance section of this manual. n Allo w the engine to warm up prior to adjus tment of engin e idle speed. WARNING: W [...]

30 31 CLEANING THE ENGINE See Figures 67 - 68. Clean the cylinder fins and flywheel fins with compressed air or a brush periodically. Dangerous overheating of the engine may occur due to impurities on the cylinder. WARNING Never run the saw without all the parts, including the drivecase cover and starter housing, securely in place. Because parts ca[...]

30 31 INSPECTING/CLEANING THE SP ARK ARRESTOR SCREEN See Figure 71. The muffler is equipped with a spark arrestor screen. A faulty spar k arr esto r scr een can crea te a fire hazar d. Throu gh normal use the screen can become dirty and should be inspected weekly and cleaned as required. Always keep the muffler and spark arrestor on the saw in good[...]

32 33 TROUBLESHOOTING Pr oblem Possible Cause Solution En gine wi ll no t st art . [Make sure ignition switch is in the RUN ( l ) position.] No spark. Engine is flooded. Check spark. Remove air filter cover . Remove spark plug from cylinder . Reattach the spark plug wire and lay spark plug on top of cylinder with the metal part of plug touching the[...]

32 33 TROUBLESHOOTING Pr oblem Possible Cause Solution Bar and chain running hot and smoking. Chain oil tank empty . Chain tension is too tight. Oiler is not functioning. Clogged oil passages. Oil tank should be filled every time fuel tank is filled. T ension chain per instructions in Adjusting the Chain T ension in the Maintenance section of this [...]

34 35 W ARRANTY LIMITED WARRANTY ST A TEMENT Ho mel ite Con su mer Pr odu ct s, Inc . war ran ts to th e orig ina l retail purchaser that this HOMELITE pr oduct is free from defect in material and workmanship and agrees to r epair or replace, at Homelite Consumer Products, Inc.’ s discr etion, any defective product free of charge within these tim[...]

34 35 W ARRANTY HOMELITE CONSUMER PRODUCTS, INC. LIMITED WARR ANTY FEDERAL AND CALIFORNIA EMISSION CONTROL SYSTEMS NONROAD AND SMALL OFF-ROAD ENGINES The U.S. Environmental Protection Agency (EP A), the California Air Resources Board (CARB), and Homelite Consumer Products, Inc. are pleased to explain the Emission Contr ol System W arranty on your n[...]

36 37 EMISSIONS MAINTENANCE SCHEDULE AND WARRANTED P ARTS LIST Emissions Parts Inspect Clean Replace Clean Every Replace Before Every Every 25 Hours 25 Hours Every Each Use 5 Hours or Y early or Y early 50 Hours AIR FIL TER ASSY includes: Filter .................................................................. X ........................... X SP AR[...]

36 37 NOTES[...]

983000-735 7-05 HOMELITE CONSUMER PRODUCTS, INC. 1428 Pearman Dairy Road, Anderson, SC 29625 Post Office Box 1207, Anderson, SC 29622 Phone 1-800-242-4672 www .homelite.com W ARNING: The engine exhaust fr om this product contains chemicals known to the State of California to cause cancer , birth defects, or other repr oductive harm. CALIFORNIA PROP[...]