Homelite UT10510 Operator'S Manual Download | Manualshive

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Weight - No bar, chain, fuel or oil ........................................................................................................... 9.7 lbs. (4.4 kg)

Fuel tank volume .................................................................................................................................... 19.4 oz. (575 ml)

Chain oil tank volume ............................................................................................................................. 11.8 oz. (350 ml)

Bar lengths ............................................................................................................................................... 14 in. (356 mm)

Chain pitch .............................................................................................................................................. .375 in (9.5 mm)

Chain gauge ......................................................................................................................................... .050 in. (1.25 mm)

Chain type ....................................................................................................................................................... Low Profile

Drive sprocket ........................................................................................................................................................ 6-tooth

Engine displacement .................................................................................................................................. 2.0 in.

3

(33 ml)

Maximum engine power (ISO 7293) .................................................................................................... 1.78HP (1.33 kW)

Idle engine speed ................................................................................................................................ 2,600 - 3,400 RPM

Fuel tank capacity .................................................................................................................................. 19.4 oz. (575 ml)

Oil tank capacity ..................................................................................................................................... 11.8 oz. (350 ml)

SPECIFICATIONS

The purpose of safety symbols is to attract your attention to possible dangers. The safety symbols, and the explanations
with them, deserve your careful attention and understanding. The safety warnings do not by themselves eliminate any
danger. The instructions or warnings they give are not substitutes for proper accident prevention measures.

Symbol

Meaning

DANGER:

Indicates an imminently hazardous situation which, if not avoided, will result in death or

serious injury.

WARNING:

Indicates a potentially hazardous situation which, if not avoided, could result in death or

serious injury.

CAUTION:

Indicates a potentially hazardous situation which, if not avoided, may result in minor or

moderate injury.

CAUTION:

(Without Safety Alert Symbol) Indicates a situation that may result in property damage.

SAVE THESE INSTRUCTIONS

SYMBOLS

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Summary of Contents for UT10510

Page 1: ...standard for dependability ease of operation and operator safety Properly cared for it will give you years of rugged trouble free performance WARNING To reduce the risk of injury the user must read and understand the operator s manual before using this product Thank you for buying a Homelite chain saw SAVE THIS MANUAL FOR FUTURE REFERENCE ...

Page 2: ...years of safe reliable service IMPORTANT Servicing requires extreme care and knowledge and should be performed only by a qualified service technician When servicing use only identical Homelite replacement parts For safe operation read and understand all instructions before using the chain saw Follow all safety instructions Failure to follow all safety instructions listed below may result in seriou...

Page 3: ...ot overreach or cut above chest height 6 Follow the manufacturer s sharpening and maintenance instructions for the saw chain 7 Only use replacement bars and chains specified by the manufacturer or the equivalent DO NOT OPERATE A CHAIN SAW WITH ONE HAND Serious injury to the operator helpers bystanders or any combination of these persons may result from one handed operation A chain saw is intended ...

Page 4: ...or gasoline Mix fuel outdoors where there are no sparks or flames Select bare ground stop the engine and allow it to cool before refueling Loosen the fuel cap slowly to release pressure and to keep fuel from escaping around the cap Tighten the fuel cap securely after refueling Wipe spilled fuel from the unit Move 30 feet 9 m away from refueling site before starting engine Never attempt to burn off...

Page 5: ...r is made WARNING All chain saw service other than items in the operator s manual maintenance instructions should be performed by competent chain saw service personnel If improper tools are used to remove the flywheel or clutch or if an improper tool is used to hold the flywheel in order to remove the clutch structural damage to the flywheel could occur which could subsequently cause the flywheel ...

Page 6: ...achine damage Wear eye hearing and head protection when operating this equipment The SAFE T TIP nose guard on the guide bar helps prevent kickback No smoking sparks or open flame Diagonal line across a symbol means this is prohibited or should be avoided Hold and operate the saw properly with both hands Do not operate the saw using only one hand Engines produce carbon monoxide which is an odorless...

Page 7: ...fety symbols and the explanations with them deserve your careful attention and understanding The safety warnings do not by themselves eliminate any danger The instructions or warnings they give are not substitutes for proper accident prevention measures Symbol Meaning DANGER Indicates an imminently hazardous situation which if not avoided will result in death or serious injury WARNING Indicates a ...

Page 8: ...ROTTLE LOCK BUTTON TRIGGER RELEASE REAR HANDLE THROTTLE TRIGGER IGNITION SWITCH FUEL CAP CHAIN OIL CAP STARTER FAN HOUSING STARTER GRIP SAFE T TIP PRIMER BULB CHOKE LEVER FEATURES FRONT HANDLE CYLINDER COVER BAR MOUNTING NUTS CLUTCH COVER ...

Page 9: ...l chain or has been certified as a low kickback chain As saw chains are sharpened they lose some of the low kickback qualities and extra caution is required SAFE T TIP OPERATION GUIDE BARS Generally guide bars with small radius tips have some what lower kickback potentials When making a replacement be sure to order one of the Homelite bars listed for your saw in this operator s manual The proper s...

Page 10: ...d after the first use ROTATIONAL KICKBACK Fig 5 KICKBACK PRECAUTIONS See Figures 4 and 5 Rotational kickback occurs when the moving chain con tacts 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 KICKBACK DANGER...

Page 11: ...e bar and chain oil into the tank 2 Fill the oil tank every time you fuel the engine STARTING THE ENGINE See Figures 8 through 14 WARNING Keep your body to the left of the chain line Never straddle the saw or chain or lean over past the chain line 1 Place the chain saw on level ground and ensure that no objects or obstructions are in immediate vicinity that could come in contact with the bar and c...

Page 12: ...GGER RELEASE STARTER GRIP STARTING THE ENGINE 3 Set the ignition switch to the RUN I position 4 Fully press and release the PRIMER BULB 7 times 5 Pull CHOKE lever all the way OUT to full position 6 While squeezing both the trigger release and throttle trigger push in the throttle lock button Release the throttle trigger This latches the trigger for starting OPERATION ...

Page 13: ... pick up the saw Use the proper grip for both handles refer to Operation for additional information STOPPING THE ENGINE See Figure 15 Release the throttle trigger and let the engine return to idle To stop the engine move the ignition switch to the stop position Do not put the chain saw on the ground when the chain is still moving If the ignition switch will not stop the saw when set to the stop po...

Page 14: ...humb is wrapped under the handlebar This grip is least likely to be broken by a kickback or other sudden reaction of the saw Any grip in which the thumb and fingers are on the same side of the handle is dangerous because a slight kick of the saw can cause loss of control WARNING DO NOT operate the throttle trigger with your left hand and hold the front handle with your right hand Never allow any p...

Page 15: ...aw Keep everyone helpers bystanders children and animals a SAFE DISTANCE from the cutting area During felling operations the safe distance should be a least twice the height of the largest trees in the felling area During bucking operations keep a minimum distance of 15 feet 4 5m between workers Do not fell trees near electrical wires or buildings Leave this operation for professionals Cut only wh...

Page 16: ...e use until the repair is made Serious personal injury may result from the saw chain turning at idle Fig 22 OPERATION 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 tre...

Page 17: ... retreat approximately 135 from the planned line of fall 2 Consider the force and direction of the wind the lean and balance of the tree and the location of large limbs These things influence the direction in which the tree will fall Do not try to fell a tree along a line different from its natural line of fall 3 Cut a notch about 1 3 the diameter of the trunk in the side of the tree Make the notc...

Page 18: ... plastic wedges into the cut so they do not touch the chain Drive wedges in little by little to help jack the tree over When bucking or felling with a wedge it may be necessary to remove the SAFE T TIP anti kickback device to allow the bar to be drawn through the cut After you complete the cut reinstall the tip immediately 5 As tree starts to fall stop the chain saw and put it down immediately Ret...

Page 19: ...e bar nose and chain during cutting this can cause kickback To avoid the danger keep the SAFE T TIP anti kickback device attached while cutting Refer to Specific Safety Rules Kick back earlier in this manual During bucking operations stand on the uphill side so that the cut off section of the log cannot roll over you Sometimes it is impossible to avoid pinching with just standard cutting technique...

Page 20: ...Figure 31 Begin on the top side of the log with the bottom of the saw against the log exert light pressure downward Note that the saw will tend to pull away from you UNDERBUCKING See Figure 32 Begin on the under side of the log with the top of the saw against the log exert light pressure upward During underbucking the saw will tend to push back at you Be prepared for this reaction and hold the saw...

Page 21: ... 1 Underbuck the branch 1 3 through for your first cut 2 Overbuck the branch to drop it 3 Finish by cutting smoothly and neatly against the main member so the bark will grow back to seal the wound WARNING If the limbs to be pruned are above chest height hire a professional to perform the pruning CUTTING SPRINGPOLES See Figure 34 A springpole is any log branch rooted stump or sapling which is bent ...

Page 22: ...rious personal injury read and under stand all the safety instructions in this section 1 Always place the switch in the stop position before you work on the saw 3 Wear gloves when handling the chain and bar These components are sharp and may contain burrs 4 Remove the bar mounting nuts using a combination wrench or 5 8 in wrench 5 Remove the clutch cover and the outer guide bar plate BAR MOUNTING ...

Page 23: ... the chain in position on the bar and place the loop around the sprocket 10 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 adjusting pin is in the chain tension pin hole CUTTERS CHAIN ROTATION CHAIN DRIVE LINKS BAR GROOVE CHAIN DRIVE LINKS ADJUSTING PIN BAR STUDS GUIDE BAR PLATE CLUTCH ...

Page 24: ...e bar up to check for sag 16 Release the tip of the guide bar and turn the chain tensioning screw 1 2 turn clockwise Repeat this process until sag does not exist CHAIN TENSIONING SCREW Fig 41 17 Hold the tip of the guide bar up and tighten the bar mounting nuts securely The chain is correctly tensioned when there is no sag on the underside of the guide bar the chain is snug but it can be turned by...

Page 25: ... out of the bar groove To help determine the correct warm chain tension use the tip of the combina tion wrench can be used as a guide Note New chain tends to stretch check the chain tension frequently and tension as required CAUTION A chain tensioned while warm may be too tight upon cooling Check the cold tension before next use 050 in 1 25 mm FLATS ON DRIVE LINKS 050 1 25 mm Fig 47 Fig 46 Fig 45 ...

Page 26: ...ht but firm pressure Stroke towards the front corner of the tooth 6 Lift the file away from the steel on each return stroke 7 Put a few firm strokes on every tooth File all left hand cutters in one direction Then move to the other side and file the right hand cutters in the opposite direction 8 Remove filings from the file with a wire brush Fig 51 RAKER DEPTH GAUGE CLEARANCE Fig 50 Raker depth gau...

Page 27: ...ngine speed during cutting which may result in severe engine damage WARNING Improper chain sharpening increases the potential of kickback WARNING Failure to replace or repair a damaged chain can cause serious injury WARNING The saw chain is very sharp Always wear protective gloves when performing maintenance to the chain MAINTENANCE ...

Page 28: ... 58 MAINTENANCE INCORRECT BACKWARD SLOPE SIDE PLATE FILING ANGLE Fig 56 80 CORRECT HOOK INCORRECT MORE THAN 30 TOP PLATE FILING ANGLE LESS THAN 30 Fig 55 30 CORRECT MAINTAINING DEPTH GAUGE CLEARANCE See Figures 57 58 and 59 Maintain the depth gauge at a clearance of 025 in 0 6 mm Use a depth gauge tool for checking the depth gauge clearances Every time the chain is filed check the depth gauge clea...

Page 29: ... Make sure the chain has stopped before you do any work on the saw WARNING Although the guide bar comes with a SAFE T TIP anti kickback device already installed you need to check the tightness of the mounting screw before each use Tighten the mounting screw of the nose guard as in structed below These are specially hardened screws If you cannot install the screw tightly replace both the screw and ...

Page 30: ...wist as shown in the illustration 7 Lift the air filter off the air filter base Choose one of the following cleaning options 8 To lightly clean tap the filter against a smooth flat surface to dislodge most saw dust and dirt particles 9 For a more thorough cleaning clean in warm soapy water rinse and let dry completely Note An alternate method is to clean the filter with compressed air always wear ...

Page 31: ...taminated or damaged Fig 66 CLEAN CYLINDER FINS CLEAN FLYWHEEL FINS Fig 67 Fig 69 REPLACING THE SPARK PLUG See Figure 70 This engine uses a Champion RCJ 6Y with 025 in 0 63 mm electrode gap Use an exact replacement and replace every six months or more frequently if necessary 1 Loosen the spark plug by turning it counterclockwise with a wrench 2 Remove the spark plug 3 Hand thread the new spark plu...

Page 32: ... arrestor screen if it is cracked or otherwise deteriorated STORING THE CHAIN SAW 1 MONTH OR LONGER 1 Drain all fuel from tank into a container approved for gasoline 2 Run the engine until it stops This will remove all fuel oil mix that could become stale and leave varnish and gum in the fuel system 3 Drain all bar and chain oil from tank into a container approved for oil 4 Clean all foreign mater...

Page 33: ...cylinder Pull the starter rope and watch for spark at spark plug tip If there is no spark repeat test with a new spark plug 2 With the Ignition Switch off remove spark plug Move choke lever to run position pushed in com pletely 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 I position Push and fully release pri...

Page 34: ...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 as sembled incorrectly 4 Guide bar and or chain are damaged Turn idle speed screw T clockwise to increase idle speed See Figure 73 Turn idle speed screw T counterclockwise to decrease speed See Figure 73 1 Oil tank should be filled every time that fuel tank is filled 2 ...

Page 35: ...n respect to claims is limited to making the required repairs or replacements and no claim of breach of warranty shall be cause for cancellation or rescission of the contract of sale of any HOMELITE product Proof of purchase will be required by the dealer to substantiate any warranty claim All warranty work must be performed by an authorized HOMELITE service dealer This warranty is limited to nine...

Page 36: ... Road Anderson SC 29625 Post Office Box 1207 Anderson SC 29622 Phone 1 800 chainsaw 1 800 242 4672 www homelite com OPERATOR S MANUAL 14 in 356 mm 33cc Chain Saw Model No UT10510 WARNING The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm CALIFORNIA PROPOSITION 65 983000 422 3 04 ...

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