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Page 15

BASIC OPERATING/CUTTING PROCEDURES

Practice cutting a few small logs using the following
technique to get the “feel” of using your saw before you
begin a major sawing operation.

1.

Take the proper stance in front of the wood with the saw
idling.

2.

Accelerate the engine to full throttle just before entering
the cut by squeezing the throttle trigger.

3.

Begin cutting with the saw against the log.

4.

Keep the engine at full throttle the entire time you are
cutting.

5.

Allow the chain to cut for you; exert only light downward
pressure. Forcing the cut could result in damage to the
bar, chain, or engine.

6.

Release the throttle trigger as soon as the cut is com-
pleted allowing the engine to idle. Running the saw at
full throttle without a cutting load can result in unneces-
sary wear to the chain, bar, and engine.

7.

Do not put pressure on the saw at the end of the cut.

WORK AREA PRECAUTIONS

See Figure 23.

Cut only wood or materials made from wood; no sheet
metal, no plastics, no masonry, no non-wood building
materials.

Never allow children to operate your saw. Allow no
person to use this chain saw who has not read this
operator's manual or received adequate instructions for
the safe and proper use of this chain saw.

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.

The carburetor is factory set and should not require
adjusting. The carburetor will permit only limited adjust-
ment of the “

L

” (Low Jet) and “

H

” (High Jet) needles. Any

adjustment should be done by a Homelite Service Center.
Under no circumstances should the “

L

” (Low Jet) and “

H

(High Jet) needles be forced outside the range of adjust-
ment.

CAUTION:

Serious damage can occur to the engine if improper
adjustments are made to the “L” and “H” needles.
Do not force the “L” and “H” needles outside the
adjustment range!

AIR FILTER

STARTER COVER

VENTS

Always cut with both feet on solid ground to prevent
being pulled off balance.

Do not cut above chest height as a saw held higher is
difficult to control against kickback forces.

Fig. 25

Fig. 23

Fig. 24

OPERATION

Do not fell trees near electrical wires or buildings.
Leave this operation for professionals.

Cut only when visibility and light are adequate for you
to see clearly.

ADJUSTING THE CARBURETOR

See Figures 24 and 25.

Before adjusting the carburetor, clean the air filter and the
starter cover vents. Allow the engine to warm up prior to
carburetor adjustment. Refer to “Maintenance” later in this
manual.

Summary of Contents for ZR10901

Page 1: ...anufactured to Homelite s high 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 serio...

Page 3: ...low 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 for two handed use DO NOT OPERATE A CHAIN SA...

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: ...de 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 to burs...

Page 6: ... 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 deadl...

Page 7: ...ded could result in death or serious injury CAUTION Indicates a potentially hazardous situation which if not avoided may result in minor or moderate injury NOTE Advises you of information or instructions vital to the operation or maintenance of the equipment SAVE THESE INSTRUCTIONS 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 B...

Page 8: ...E FRONT HANDLE CYLINDER COVER THROTTLE 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 BAR MOUNTING NUTS CLUTCH COVER ...

Page 9: ... bars listed for your saw in this operator s manual The proper size SAFE T TIP nose guard comes installed on the bar Use only guide bars that have a provision for mounting the SAFE T TIP CHAIN BRAKE See Figures 4 and 5 Chain brakes are designed to quickly stop the chain from rotating When the chain brake lever hand guard is pushed RUN POSITION BRAKE POSITION Fig 5 Fig 4 WARNING KICKBACK occurs whe...

Page 10: ...ith the eyes wash them immediately with clean water If irritation is still present see a doctor immediately Clean up spilled fuel immediately MIXING THE FUEL This product is powered by a 2 cycle engine and requires pre mixing gasoline and 2 cycle oil Pre mix unleaded gasoline and 2 cycle engine oil in a clean container approved for gasoline This engine is certified to operate on unleaded gasoline ...

Page 11: ...PERATING THE CHAIN BRAKE See Figures 11 and 12 A CHAIN BRAKE IS SUPPLIED ON SOME MODELS Refer to Safety earlier in this manual for additional information Check the operating condition of the chain brake prior to each use 1 Using the back of your left hand engage the chain brake by pushing the chain brake lever hand guard toward the bar while the chain is rotating rapidly 2 Reset the chain brake ba...

Page 12: ...ntact with the bar and chain 2 Hold the front handle firmly with the left hand and put your right foot onto the base of the rear handle IGNITION SWITCH IN THE RUN POSITION PRIMER BULB Fig 16 Fig 14 Fig 15 Fig 17 FULL CHOKE CHOKE LEVER HALF CHOKE RUN POSITION 3 Set the ignition switch to the RUN I position 4 Make sure the chain brake is in the RUN position by pulling back on the lever hand guard 5 ...

Page 13: ...r squeeze and hold the throttle trigger while the chain brake is in the brake position Now you are ready to pick up the saw Use the proper grip for both handles refer to Operation for additional information STOPPING THE ENGINE 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 t...

Page 14: ...umb 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 See Figure 22 WARNING DO NOT operate the throttle trigger with your left hand and hold the front handle with your right hand Neve...

Page 15: ...ep 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 The carburetor is factory set and should not require adjusting The carburetor will permit only limited adjus...

Page 16: ...tinue use until the repair is made Serious personal injury may result from the saw chain turning at idle Fig 26 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...

Page 17: ... 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 notch cuts so they intersect at a right angle to the line of fall This notch should be cleaned out...

Page 18: ... 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 Retreat along the ...

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: ...NG See Figure 35 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 35 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 ...

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 37 A springpole is any log branch rooted stump or sapling which is bent ...

Page 22: ...this section 1 Always place the switch in the stop position before you work on the saw 2 Make sure the chain brake is not set by pulling the chain brake lever hand guard towards the front handle to the RUN position 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 cl...

Page 23: ...ar 9 Hold 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 PLAT...

Page 24: ...or 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 45 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 hand without bindi...

Page 25: ... mm 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 51 Fig 50 Fig ...

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 55 RAKER DEPTH GAUGE CLEARANCE Fig 54 Raker depth gau...

Page 27: ...ause excessive engine 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: ... 63 MAINTENANCE MAINTAINING DEPTH GAUGE CLEARANCE See Figure 62 63 and 64 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 clearance Use a flat file and a depth gauge jointer to lower all gauges uniformly Use a 025 in 0 6mm depth gauge jointer After lowering each depth gauge r...

Page 29: ...re 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 the SAFE T TIP before further operati...

Page 30: ...tabs and twist as shown in the illustration 8 Lift the air filter off the air filter base Choose one of the following cleaning options 9 To lightly clean tap the filter against a smooth flat surface to dislodge most saw dust and dirt particles 10 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 a...

Page 31: ...ed or damaged Fig 71 CLEAN CYLINDER FINS CLEAN FLYWHEEL FINS Fig 72 Fig 73 FUEL FILTER Fig 74 REPLACING THE SPARK PLUG See Figure 75 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 n...

Page 32: ... 024 in 60mm or worn halfway through Always keep the chain brake mechanism clean and lightly lubricate the linkage Always test the chain brake performance after servicing or cleaning Refer to Operation Operating Chain Brake earlier in this manual for additional information Check and if damaged replace the chain catcher STORING THE CHAIN SAW 1 MONTH OR LONGER 1 Drain all fuel from tank into a conta...

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 pr...

Page 34: ...in 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 79 Turn idle speed screw T counterclockwise to decrease speed See Figure 79 1 Oil tank should be filled every time that fuel tank is filled 2 Ten...

Page 35: ...r 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 ninety 90 days from the date of original retail purchase for any HOMELITE product that is used for rental or commercial purposes or an...

Page 36: ...e Box 1207 Anderson SC 29622 Phone1 800 chainsaw 1 800 242 4672 www homelite com OPERATOR S MANUAL 14 in 356 mm 33cc Chain Saw Model No ZR10901 ZR10901A 16 in 406 mm 33cc Chain Saw ZR10947 ZR10947A ZR10947D 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 851 9 ...

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