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Operator's and Safety Manual
for Gasoline Chain Saws
Read and understand this Manual. Always follow safety precautions in the Operator's and Safety Manual.
FUELS WITH MORE THAN 10% ETHANOL ARE NOT APPROVED FOR USE IN DOLMAR 2-STROKE ENGINES!
Use of alternative fuels, such as E-20 (20% ethanol), E-85 (85% ethanol) or any fuels not meeting DOLMAR
requirements are not approved for use in DOLMAR 2-stroke gasoline engines!
USE OF ALTERNATIVE FUELS CAN CAUSE THE FOLLOWING PROBLEMS:
Poor engine performance, loss of power, overheating, fuel vapor lock, improper clutch engagement, premature
deterioration of fuel lines, premature deterioration of gaskets, premature deterioration of carburetors.
USING ALTERNATIVE FUELS AND/OR 2-STROKE OILS NOT ACCORDING TO JASO FC OR ISO-L-EGD IN
Improper use can cause serious injury!
Preserve this Manual carefully!
DOLMAR 2-STROKE ENGINES WILL VOID YOUR ENGINE WARRANTY!
PS-351
PS-421
WARNING!
WARNING!
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Related Manuals for Dolmar PS-351 Operator's and safety manua
Summary of Contents for Dolmar PS-351 Operator's and safety manua
- Page 1 FUELS WITH MORE THAN 10% ETHANOL ARE NOT APPROVED FOR USE IN DOLMAR 2-STROKE ENGINES! Use of alternative fuels, such as E-20 (20% ethanol), E-85 (85% ethanol) or any fuels not meeting DOLMAR requirements are not approved for use in DOLMAR 2-stroke gasoline engines!
- Page 2 As the engine owner, you should however be aware that DOLMAR may deny warranty coverage if your engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications.
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Page 3: Table Of Contents
Careless or improper use of this product can cause serious or even fatal injury. Before operating a chain saw or other DOLMAR products it is important that you read, fully understand and carefully follow the instructions outlined in this operator’s manual. Kickback may cause severe or fatal injury and is one of many potential dangers in operating a chain saw. -
Page 4: Delivery Inventory
Delivery inventory 1 Chain saw 2 Guide bar 3 Saw chain 4 Chain protection cover 5 Universal wrench 6 Wrench 7 Screw driver for carburetor adjustment In case one of the parts listed should not be included in the delivery inventory, please consult your sales agent. 8 Operator’s and Safety Manual (not shown) Symbols You will notice the following symbols on the chain saw and in the Operator’s and Safety Manual:... -
Page 5: Additional Safety Precautions
Do not let the should be performed by DOLMAR. (For example, if improper tools are used to remove the flywheel nose of the guide bar contact the log, branch,... -
Page 6: General Safety Precautions
Have your DOLMAR dealer show you how to ope- Always use two hands when rate your chain saw. Observe all applicable local operating the chain saw! safety regulations, standards and ordinances. - Page 7 Never modify a chain saw in any way. Only at- tachments supplied by DOLMAR or expressly Protect your hands with gloves when handling saw and approved by DOLMAR for use with the specific saw chain. Heavy-duty, nonslip gloves improve your saw are authorized.
- Page 8 "Mounting Guide Bar and Chain" of this manual. tion. If fuel or oil leakage is found, do not start or run DOLMAR chain, guide bar and sprocket must match each the engine until leak is fixed and spilled fuel has been other (see the appropriate section in this manual).
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Page 9: Cutting Instructions
Always start a cut with the chain running at full speed the appropriate section of this manual. and the spike bar in contact with the wood. Have your DOLMAR dealer check your saw and make proper adjustments or repairs. WARNING! Check the saw chain tension frequently, especially Never use the saw with one hand. - Page 10 In order to keep control of your saw, always maintain a firm foothold. Never work on a ladder, in a tree or on any other insecure support. Never use the saw above shoulder height (fig. 9). Kickback: Position the chain saw in such a way that your body is clear of the cutting attachment whenever the engine Kickback occurs when the upper quadrant of the bar is running (fig.
- Page 11 (fig. 11). Kickback is most pronounced in the upper quadrant of the bar nose. To avoid kickback DOLMAR chain types are designed to reduce kickback forces. The best protection from personal-injury that may result from kickback is to avoid kickback situations:...
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Page 12: Cutting Techniques
Pushback: To avoid pull-in Pushback occurs when the chain on the top of the . Always start a cut with the chain rotating at full speed bar is suddenly stopped when it is pinched, caught and the spike bar in contact with the wood. or encounters a foreign object in the wood. -
Page 13: Felling Instructions
45° First cut 45° Second cut = cutting down area When felling, maintain a distance of at least 2 /2 tree If the tree has large buttress roots, cut into the largest lengths from the nearest person (see fig. 17). buttresses vertically first (horizontally next) and remove (fig. -
Page 14: Sectioning Method
Plunge-Cut Method Begin the felling cut slighty higher than the felling notch and on the opposite side of the tree (fig. 22). Then cut Timber having a diameter more than twice the length horizontally through towards the felling notch. Apply of the guide bar reauires the use of the plunge-cut the chain saw with its spikes directly behind the uncut method before making the felling cut. - Page 15 Bucking Bucking is cutting a log into sections. WARNING! There is an extreme danger of kickback at this point. Extra caution must be taken to maintain control of the saw. To make the felling cut, follow WARNING! the sectioning method described previously (fig. .
- Page 16 2. Cross cut any maintenance or repair work not described in this manual. Have such work performed by your Tension side DOLMAR service shop only. Pressure side 1. Relieving cut Maintaining and storing the saw Keep the chain, bar and sprocket clean and lubricated;...
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Page 17: Denomination Of Components
Denomination of components Identification plate Serial no. 6" (400mm) 0 2456 Year of manufacture 528.092.056 42.040.66 DOLMAR GmbH, 22045 Hamburg, Germany XXX.XXX. XXX Typ 94 Indicate when ordering spare parts! 1 Handle 15 Starter grip 2 Cover 16 Combination switch (Choke / Start / Stop) -
Page 18: Technical Data
16,2 Chain oil tank capacity floz Mixture ratio (fuel/two-stroke oil) - when using DOLMAR High Performance oil 50 : - when using other synthetic oils (oil quality must be JASO FC or ISO-L-EGD) 50 : Chain brake... -
Page 19: Only For Models With Fastening Nuts On The Sprocket Guard
PUTTING INTO OPERATION Only for models with fastening nuts on the sprocket guard STOP CAUTION: Before doing any work on the guide bar or chain, always switch off the engine and pull the plug cap off the spark plug (see „Replacing the spark plug“). Always wear protec- tive gloves! CAUTION: Start the chain saw only after having assembled it com-... -
Page 20: Tightening The Saw Chain
Lift the chain (9) over the sprocket (8). CAUTION: Do not insert the chain between the chain sprocket and the disc. Guide the chain from above about halfway into the groove (10) on the guide bar. CAUTION: Note that the cutting edges along the top of the chain must point in the direction of the arrow! Pull the chain (9) around the sprocket nose (11) of the guide bar in the direction of the arrow. -
Page 21: Checking The Chain Tension
Checking the chain tension STOP The tension of the chain is correct if the chain rests against the bottom side of the guide bar and can still be easily turned by hand. While doing so the chain brake must be released. Check the chain tension frequently - new chains tend to get longer during use! When checking the chain tension the engine must be switched... -
Page 22: Mounting The Guide Bar And Saw Chain
Only for the QuickSet guide bar CAUTION: STOP Before doing any work on the guide bar or chain, always switch off the engine and pull the plug cap off the spark plug (see „Replacing the spark plug“). Always wear protec- tive gloves! CAUTION: Start the chain saw only after having assembled it com-... -
Page 23: Tensioning The Saw Chain
Pull the chain (6) around the sprocket nose (8) of the guide bar in the direction of the arrow. Replace the sprocket guard (3). IMPORTANT: Lift the saw chain over the chain catcher (9). Tighten the nuts (2) only hand-tight to begin with. Tensioning the saw chain Turn the QuickSet chain tensioner (10) to the right (clockwise) using the combination tool, until the saw chain guide elements... -
Page 24: Mounting The Guide Bar And Saw Chain
Only for models with quick tensioner on sprocket guard CAUTION: Before doing any work on the guide bar or chain, always STOP switch off the engine and pull the plug cap off the spark plug (see „Replacing the spark plug“). Always wear protec- tive gloves! CAUTION: Start the chain saw only after having assembled it com-... -
Page 25: Tightening The Saw Chain
Pull the chain (8) around the sprocket nose (10) of the guide bar in the direction of the arrow. Line up the holes in the sprocket guard (4) with the pins (11). Turn the chain tensioning screw (B/3) to get the chain tension- ing pin (12) aligned with the hole in the guide bar. -
Page 26: Checking The Chain Tension
Checking the chain tension STOP The tension of the chain is correct if the chain rests against the bottom side of the guide bar and can still be easily turned by hand. While doing so the chain brake must be released. Check the chain tension frequently - new chains tend to get longer during use! When checking the chain tension the engine must be switched... -
Page 27: Fuel / Refuelling
980 008 2 20 l order number 980 008 2 The chain oil BIOTOP sold by DOLMAR is made of special vegetable oils and is 00% bio-degradable. BIOTOP has been Bio-degradable oil is stable only for a limited period of granted the "blue angel"... - Page 28 Important note on bio-degradable chain oils If you are not planning to use the saw again for an ex- The next time you use the saw, fill the tank with BIOTOP tended period of time, empty the oil tank and put in a chain oil again.
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Page 29: Chain Lubrication
Checking the chain lubrication Never work with the chain saw withoute sufficient chain lubri- cation. Otherwise the service life of the chain and guide bar will be reduced. Before starting work check the oil level in the tank and the oil feed. Check the oil feed rate as described below: Start the chain saw (see „Starting the engine”). -
Page 30: Starting The Engine
Starting the engine Do not start the chain saw until after it is completely as- sembled and checked! Move at least meters / 0 feet away from the place where the chain saw was fuelled. Make sure you have a secure footing, and place the saw on the ground in such a way that the guide bar and chain are not near anything. -
Page 31: Checking The Chain Brake
Bring the engine back to idle and release the chain brake. Caution: If the chain does not stop immediately in this test, turn off the engine immediately. Do NOT use the chain saw in this condition! Contact a DOLMAR service center. STOP visible - Normal operation... -
Page 32: Adjusting The Carburetor
Important: If the saw chain still moves during idle even after you have adjusted the idle speed, do NOT use the saw. Take it to a DOLMAR service center! Note: Carburetor adjustment aids in proper functioning, economi- cal consumption, and safe operation. -
Page 33: Sharpening The Saw Chain
MAINTENANCE Sharpening the saw chain STOP CAUTION: Before doing any work on the guide bar or chain, always switch off the engine and pull the plug cap off the spark plug (see „Replacing the spark plug“). Always wear protective gloves! The chain needs sharpening when: The sawdust produced when sawing damp wood looks like wood flour. - Page 34 Files and how to work with them Use a special saw chain round file for sharpening. Standard round files are unsuitable. For the order number, see “Accessories”. Type 484: File the first cutter half with a 3/16” (4,8 mm) dia. round saw-chain file, then switch to a 11/64”...
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Page 35: Cleaning The Guide Bar
The chain brake is a very important safety device and like any other component subject to normal wear and tear. Regular inspection and maintenance are important for your own safety and must be done by a DOLMAR service center. SERVICE Cleaning the guide bar CAUTION: Protective gloves must be worn. -
Page 36: Replacing The Saw Chain
Replacing the saw chain CAUTION: Use only chains and guide bars designed for this saw (see the Extract from the spare-parts list)! When changing the type of chain, the complete clutch drum (12) must be changed to fit the different chain. If neces- sary, replace it. -
Page 37: Cleaning The Air Filter
Cleaning the air filter CAUTION: To prevent eye injury, always wear eye protection when cleaning the filter with compressed air! Do not use fuel to clean the air filter. Unscrew the hood lock (1) counter-clockwise and remove the hood (2). Push up the combination switch (3) (Choke position) to prevent dirt particles from falling into the carburetor. -
Page 38: Replacing The Spark Plug
Replacing the spark plug STOP CAUTION: .020” Do not touch the spark plug or plug cap if the engine is running (high voltage). (0,5 mm) Switch off the engine before starting any maintenance work. A hot engine can cause burns. Wear protective gloves! The spark plug must be replaced in case of damage to the insulator, electrode erosion (burn) or if the electrodes are very dirty or oily. -
Page 39: Replacing The Starter Cable
Replacing the starter cable/ Replacing the return spring pack/Replacing the starter spring Unscrew four screws (1). Remove fan housing (2). Remove the air guide (3) from the fan housing. CAREFUL! Injury hazard! Do not unscrew screw (7) if the return spring is under tension. If the starter cable is to be replaced although it is not broken, it will be necessary to first de-tension the cable drum return spring (13). -
Page 40: Cleaning The Cylinder Area
Cleaning the air filter compartment / fan com- partment Remove cover. Remove the fan housing. CAUTION: To prevent eye injury, always wear eye protection when cleaning the filter with compressed air! The entire area (15) can now be brushed clean or cleaned with compressed air. -
Page 41: Instructions For Periodic Maintenance
The user of the chain saw must not perform maintenance work which is not described in the operator’s manual. All such work must be carried out by a DOLMAR service center. Page General Chain saw Clean exterior, check for damage. -
Page 42: Service, Spare Parts And Guarantee
Please bear in mind that if parts other than original DOLMAR spare parts are used, this will automatically invalidate the DOLMAR product guarantee. -
Page 43: Troubleshooting
Trouble shooting Malfunction System Observation Cause Chain does not run Chain brake Engine runs Chain brake actuated. Engine does not start or Ignition system Ignition spark Malfunction in fuel supply system, com- only with difficulty pression system, mechanical malfunction. No ignition spark STOP switch in position, fault or short-circuit in the wiring, Spark plug cap or spark plug defective... -
Page 44: Extract From The Spare Parts List
Extract from the spare parts list PS-351 Use only original DOLMAR parts. For repairs and PS-421 replacement of other parts, see your DOLMAR service center. 31/32... - Page 45 Extract from the spare parts list PS-351 Use only original DOLMAR parts. For repairs and PS-421 replacement of other parts, see your DOLMAR service center. Accessories (not delivered with the chain saw) Pos. DOLMAR-No. Qty. Denomination 25 95 00 090...
- Page 48 The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. DOLMAR POWER PRODUCTS PO Box 5007 Alpharetta GA 30005-5007...