UT10516 / 16 in. 33cc CHAIN SAW Your chain saw has been engineered and manufactured to Homelite’s high standard for dependability, ease of operation, and operator safety. When properly cared for, it will give you years of rugged, trouble-free performance.
TAbLE OF CONTENTS Introduction ... 2 General Safety Rules ... 3-4 Specific Safety Rules ... 4 Symbols ... 5-6 Glossary of Terms ... 7 Features ... 8-9 Assembly ... 10 Operation ... 10-21 ...
WARNING: Read and understand all instructions. Failure to follow all instructions listed below, may result in electric shock, fire and/or serious personal injury. REAd ALL INSTRUCTIONS 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 this tool.
Use only the replacement guide bars and low kickback chains specified for the saw. do not adapt the powerhead to a bow guide or use it to power any attachments or devices not listed for the saw. The gas powered saw (or electrically powered saw) is classified by CSA as a Class 1C (or Class 2C) saw.
Some of the following symbols may be used on this product. Please study them and learn their meaning. Proper inter- pretation of these symbols will allow you to operate the product better and safer. SyMbOL NAME Safety Alert Read The Operator’s Manual Wear Eye, Hearing, and Head Protection SAFE-T-TIP Nose Guard...
To avoid serious personal injury, do not attempt to use this product until you read thoroughly and understand com- pletely the operator’s manual. If you do not understand the warnings and instructions in the operator’s manual, do not use this product. Call Homelite customer service for assistance. Page ...
bucking The process of cross cutting a felled tree or log into lengths. Chain brake A device used to stop the saw chain. Chain Saw Powerhead A chain saw without the saw chain and guide bar. Clutch A mechanism for connecting and disconnecting a driven member to and from a rotating source of power.
PROdUCT SPECIFICATIONS Bar length: UT10514 ... 14 in. UT10516 ... 16 in. Chain pitch ..375 in. Chain gauge ..050 in. Chain type ...Low Profile Skip Tooth Drive sprocket ... 7-tooth Engine displacement ... 2.0 cu. in. (33cc) Engine power ... 1.78 HP min. Idle engine speed ...
Starter grip Starter/Fan houSing KNOW yOUR CHAIN SAW See Figures 1a - 1b. The safe use of this product requires an understanding of the information on the tool and in this operator’s manual as well as a knowledge of the project you are attempting. Before use of this product, familiarize yourself with all operating features and safety rules.
UNPACKING This product has been shipped completely assembled. Carefully remove the tool and any accessories from the box. Make sure that all items listed in the packing list are included. Inspect the tool carefully to make sure no breakage or damage occurred during shipping.
FUEL ANd REFUELING HANdLING THE FUEL SAFELy WARNING: Check for fuel leaks. If any are found, correct them before using the saw to prevent fire or burn injury. Always handle fuel with care; it is highly flammable. Always refuel outdoors and do not inhale fuel vapors. Do not let gasoline or oil come in contact with skin.
AddING bAR ANd CHAIN OIL See Figure . Use HOMELITE Bar and Chain Oil. It is designed for chains and chain oilers, and is formulated to perform over a wide temperature range with no dilution required. Chain saw should use approximately one tank of oil per tank of fuel.
STARTING THE ENGINE See Figures - 11. Starting the product differs depending on whether the engine is cold or warm. WARNING: Keep your body to the left of the chain line. Never straddle the saw or chain, or lean over past the chain line. Place the chain saw on level ground and ensure that no objects or obstructions are in the immediate vicinity that could come in contact with the bar and chain.
Push choke lever to HALF choke position. Pull starter grip until engine runs. NOTE: Allow the saw to run in this position 15-30 sec- onds, depending upon the temperature. Push choke lever all the way in to the RUN position. Squeeze and release the throttle trigger to return the engine to idle after a total run time of at least 30 sec- onds.
AdJUSTING IdLE SPEEd See Figure 1. If the engine starts, runs, and accelerates, but will not idle, turn the idle speed screw “T” clockwise to increase idle speed. If the chain turns at idle, turn the idle speed screw “T” counterclockwise to reduce the idle RPM and stop the chain movement.
KICKbACK PRECAUTIONS See Figures 1 - 1. 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 towards the operator. This reaction can cause loss of control, which can result in serious injury.
PROPER CUTTING STANCE See Figure 1. Balance your weight with both feet on solid ground. Keep left arm with elbow locked in a “straight arm” posi- tion to withstand any kickback force. Keep your body to the left of the chain line. Keep your thumb on underside of handlebar.
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. Do not cut down trees having an extreme lean or large trees with rotten limbs, loose bark, or hollow trunks.
On large diameter trees, stop the back cut before it is deep enough for the tree to either fall or settle back on the stump. Then insert soft wooden or plastic wedges into the cut so they do not touch the chain. Drive wedges in, little by little, to help jack the tree over.
bUCKING WITH A WEdGE See Figure . If the wood diameter is large 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 drawn through the cut.
UNdERbUCKING See Figure 0. Begin on the under side of the log with the top of the saw against the log; exert light pressure upward. During under- bucking, the saw will tend to push back at you. Be prepared for this reaction and hold the saw firmly to maintain control.
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.
Lay out the new saw chain in a loop and straighten any kinks. The cutters should face in the direction of chain rotation. If they face backwards, turn the loop over. Place the chain drive links into the bar groove as shown.
Replace the outer guide bar plate ensuring that the bar pin groove is at the bottom with the upper and lower edges angled away from the guide bar. Replace the clutch cover and bar mounting nuts. Finger-tighten the bar mounting nuts. The bar must be free to move for tension adjustment.
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- sioned warm chain will hang approximately .050 in. out of the bar groove.
SHARPENING THE CUTTERS See Figures - . 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 protective gloves when performing maintenance to the chain to prevent serious personal injury.
TOP PLATE FILING ANGLE See Figure . CORRECT 30° – file holders are marked with guide marks to align file properly to produce correct top plate angle. LESS THAN 30° – for cross cutting. MORE THAN 30° – feathered edge dulls quickly. SIdE PLATE ANGLE See Figure .
MAINTAINING THE GUIdE bAR See Figure . CAUTION: Make sure the chain has stopped before you 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.
CLEANING THE AIR FILTER See Figures 1 - . For access to the air filter and carburetor area, loosen the three screws holding the cylinder cover. Activate chain brake. Lift the front of the cylinder cover past chain brake lever.
AdJUSTING THE CARbURETOR See Figures - . before adjusting the carburetor: Use a brush or compressed air to clean the starter cover vents. Clean the air filter. Refer to Cleaning the Air Filter in the Maintenance section of this manual. Allow the engine to warm up prior to adjustment of engine idle speed.
CLEANING THE ENGINE See Figures - . 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.
INSPECTING/CLEANING THE SPARK ARRESTOR SCREEN See Figure 1. The muffler is equipped with a spark arrestor screen. A faulty spark arrestor screen can create a fire hazard. Through 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 condition.
bAR ANd CHAIN COMbINATIONS Chain specifications: 3/8 in. pitch, .05 in. chain gauge Length of bar 14 in. 16 in. Problem Possible Cause Engine will not start. No spark. [Make sure ignition switch is in the RUN Engine is flooded. ( l ) position.] Engine starts but will Carburetor requires “L”...
Contact an authorized service center for drive sprocket replace- ment. Call uS FirSt For any questions about operating or maintaining your product, call the Homelite Your product has been fully tested prior to shipment to ensure your complete satisfaction. Page ...
HOMELITE brand product. Proof of purchase will be required by the dealer to substantiate any warranty claim. All warranty work must be performed by a Homelite authorized service center.
U.S. EPA standards for the first two years of engine use from the date of sale to the ultimate purchaser. Homelite Consumer Products, Inc., must warrant the emission control system on your non-road or small off-road engine for the period of time listed above provided there has been no abuse, neglect, or improper maintenance of your non-road or small off-road engine.
EMISSIONS MAINTENANCE SCHEdULE ANd WARRANTEd PARTS LIST Emissions Parts Inspect before Each Use AIR FILTER ASSy includes: Filter ... X ...X SPARK ARRESTOR ...X CARbURETOR ASSy includes: Heat Dam Gaskets FUEL TANK ASSy includes: Fuel Lines ... X Fuel Cap ... X Fuel Filter IGNITION ASSy includes:...
CALIFORNIA PROPOSITION 65 SERVICE For parts or service, contact your nearest Homelite authorized service dealer. Be sure to provide all relevant information when you call or visit. For the location of the authorized service dealer nearest you, please call 1-800-242-4672 or visit us online at www.homelite.com.