Instruction Manual Original Instruction Manual Important: Read this instruction manual carefully before putting the chain saw into operation and strictly observe the safety regulations! Keep this instruction manual! PS-350 S, 350 SC PS-420 S, 420 SC http://www.dolmar.
Thank you for purchasing a DOLMAR product! Table of contents Congratulations on choosing a DOLMAR chain saw! We are conÞdent that you will be satisÞed with this modern piece of equipment. The PS-350, PS-420 are very handy and robust chain saws with a new Design. Delivery inventory ..............................................................
Delivery inventory 2 3 4 1. 2. 3. 4. 5. 6. 7. 8. Chain saw 5 6 Guide bar Saw chain Chain protection cover Universal wrench Offset screwdriver Screwdriver for carburetor adjustment Instruction manual (not shown) 7 1 In case one of the parts listed should not be included in the delivery inventory, please consult your sales agent.
SAFETY PRECAUTIONS Intended use Power chain saws This power chain saw may be used only for sawing wood out of doors. It is intended for the followung uses depending on its class: - Professional and mid-class: Use on small, medium and large trees: felling, limb removal, cutting to length, thinning. Hobbyklasse: Occasional use on small trees, fruit-tree care, felling, limb removal, cutting to length.
Fuels / Refuelling - Stop the engine before refuelling the chain saw. - Do not smoke or work near open Þres (5). - Let the engine cool down before refuelling. - Fuels can contain substances similar to solvents. Eyes and skin should not come in contact with mineral oil products. Always wear protective gloves when refuelling. Frequently clean and change protective clothes. Do not breathe in fuel vapors. Inhalation of fuel vapours can be hazardous to your health. - Do not spill fuel or chain oil.
Kickback - When working with the chain saw dangerous kickbacks may occur. - Kickback occurs when the upper part of the end of the guide bar inadvertently touches wood or other hard objects (10). - This causes the saw to be thrown back toward the user with great force and out of control. Risk of injury! In order to prevent kickback, follow these rules: - Only specially-trained persons should perform plunge cuts, i.e.
- - Be careful when cutting splintery wood. Cut pieces of wood may be pulled along (risk of injuries). When cutting with the upper edge of the guide bar, the chain saw may be pushed in the direction of the user if the chain gets clamped. For this reason use the lower edge of the bar whenever possible. The chain saw will then be pushed away from you (15). If the timber is under tension (16), Þrst cut the pressure side (A). Then the crosscut can be performed on the tension side (B).
Transport and storage - When changing your location during work switch off the chain saw and actuate the chain brake in order to prevent an inadvertent start of the chain. - Never carry or transport the chain saw with the chain running. When the saw is hot, do not cover it (with a tarp, blanket, newspaper or the like). Let the saw cool down before putting it in a storage case or vehicle.
Technical data PS-350 S, 350 SC PS-420 S, 420 SC Stroke volume cm3 34,7 42,4 Bore mm 38 42 Stroke mm 30,6 30,6 Max. power at speed kW / 1/min 1,7 / 9.500 2,2 / 9.500 Max. torque at speed Nm / 1/min 2,1 / 6.500 2,6 / 6.500 Idling speed / max. engine speed with bar and chain 1/min 2.800 / 13.500 2.800 / 13.500 Clutch engagement speed 1/min 5.100 5.
Denomination of components 4 1 2 5 3 6 7 8 9 14 13 12 26 11 10 27 25 15 16 17 18 IdentiÞcation plate (14) Indicate when ordering spare parts! DOLMAR PS-420 S 2011 123456 Serial number Year of manufacture DOLMAR GmbH, 22045 Hamburg, Germany 000.000.
PUTTING INTO OPERATION Only for models with fastening nuts on the sprocket guard 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! CAUTION: Start the chain saw only after having assembled it completely and inspected. Mounting the guide bar and saw chain Use the universal wrench delivered with the chain saw for the following work.
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: 9 Note that the cutting edges along the top of the chain must point in the direction of the arrow! 8 10 9 11 Pull the chain (9) around the sprocket nose (11) of the guide bar in the direction of the arrow. Replace the sprocket guard (3). IMPORTANT: Lift the saw chain over the chain catcher (12).
Checking the chain tension 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. STOP 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 off. NOTE: It is recommended to use 2-3 chains alternatively.
Only for the QuickSet guide bar 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! CAUTION: Start the chain saw only after having assembled it completely and inspected. On QuickSet guide bars the chain is tensioned using a toothed rack in the bar. This simpliÞes retensioning of the chain. These models do not have a conventional chain tensioner.
6 Pull the chain (6) around the sprocket nose (8) of the guide bar in the direction of the arrow. 8 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.
Only for models with quick tensioner on sprocket guard 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! CAUTION: Start the chain saw only after having assembled it completely and inspected.
8 Pull the chain (8) around the sprocket nose (10) of the guide bar in the direction of the arrow. 10 11 Line up the holes in the sprocket guard (4) with the pins (11). Turn the chain tensioning screw (B/3) to get the chain tensioning pin (12) aligned with the hole in the guide bar. Push the sprocket guard (4) onto the pin (11).
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 off. NOTE: It is recommended to use 2-3 chains alternatively.
Fuel CAUTION: This saw is powered by mineral-oil products (gasoline and oil). Be especially careful when handling gasoline. Avoid all ßame or Þre. Do not smoke (explosion hazard). Fuel mixture This tool is powered by a high-performance air-cooled twostroke engine. It runs on a mixture of gasoline and two-stroke engine oil. The engine is designed for unleaded regular gasoline with a min. octane value of 91 ROZ. In case no such fuel is available, you can use fuel with a higher octane value.
Important note on bio-degradable chain oils If you are not planning to use the saw again for an extended period of time, empty the oil tank and put in a small amount of regular engine oil (SAE 30), and then run the saw for a time. This is necessary to ßush out all remaining bio-degradable oil from the oil tank, oil-feed system, chain and guide bar, as many such oils tend to leave sticky residues over time, which can cause damage to the oil pump or other parts.
Checking the chain lubrication Never work with the chain saw withoute sufÞcient chain lubrication. 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”). Hold the running chain saw approx. 15 cm above a trunk or the ground (use an appropriate base).
Starting the engine Do not start the chain saw until after it is completely assembled and checked! Move at least 3 meters / 10 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. Actuate the chain brake (block it). Hold the front handle Þrmly with one hand and press the saw against the ground. Hold the down rear handguard with your right foot as shown.
Checking the chain brake The chain brake must be checked before every use of the saw! Start the engine as described above (have a secure footing, place the chain saw on the ground so that the chain and guide bar are not near anything). 6 Hold the front handle Þrmly, with your other hand on the rear grip. Let the engine run at medium speed and push the handguard (6) in the direction of the arrow using the back of your hand, until the chain brake engages. The chain should now stop immediately.
Adjusting the carburetor CAUTION: Carburetor adjustment may only be done by a specialist DOLMAR service centre! SERVICE Do not undertake any adjustments to adjusting screws (H) and (L) without a tachometer! Incorrect adjustment can lead to engine damage! A tachometer is needed for adjustments to adjusting screws (H) and (L), because if the engine runs over its maximum rated speed, it can overheat and run out of lubricant. This can damage the engine! Only adjusting screw (S) can be manipulated by the user.
MAINTENANCE Sharpening the saw chain 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 ßour. The chain penetrates the wood only under great pressure. The cutting edge is visibly damaged. The saw is pulled to the left or right when sawing.
Files and how to work with them Use a special saw chain round Þle for sharpening. Standard round Þles are unsuitable. For the order number, see “Accessories”. Type 484: File the Þrst cutter half with a 4,8 mm dia. round saw-chain Þle, then switch to a 4.5 mm dia. Þle. Type 092: Saw chain round Þle, dia. 4.0 mm. The Þle should cut only when pushed forwards (arrow). Lift the Þle when leading it backwards. First sharpen the shortest cutter.
Cleaning the inside of the sprocket guard 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! CAUTION: Start the chain saw only after having assembled it completely and inspected. 4 Remove the sprocket guard (1) (see PUTTING INTO OPERATION for the correct model) and clean out the interior with a brush. Remove the chain (2) and guide bar (3).
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 Þt the different chain. If necessary, replace it. Check the sprocket before mounting a new chain. Worn out sprockets (8) may damage the new chain and must therefore be replaced. Remove the sprocket guard (See „PUTTING INTO OPERATION“). 8 Remove the chain and guide bar. Remove circlip (9).
Cleaning the air Þlter 4 3 CAUTION: To prevent eye injury, always wear eye protection when cleaning the Þlter with compressed air! Do not use fuel to clean the air Þlter. 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. Pull the air Þlter (4) up and out. IMPORTANT: Cover the intake opening with a clean cloth to prevent dirt particles from getting into the carburetor.
Replacing the spark plug 8 0,5 mm CAUTION: Do not touch the spark plug or plug cap if the engine is running (high voltage). 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. Remove the Þlter cover (see „Cleaning the air Þlter“). Pull the plug cap (8) off the spark plug.
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 Þrst de-tension the cable drum return spring (13). To do this, use the grip to pull the cable all the way out of the fan housing.
15 Cleaning the air Þlter compartment / fan compartment Remove cover. Remove the fan housing. CAUTION: To prevent eye injury, always wear eye protection when cleaning the Þlter with compressed air! The entire area (15) can now be brushed clean or cleaned with compressed air. 15 Cleaning the cylinder Þns A bottle brush can be used to clean the cylinder Þns. 16 Replacing the suction head The felt Þlter (16) of the suction head can become clogged.
Instructions for periodic maintenance To ensure long life, prevent damage and ensure the full functioning of the safety features the following maintenance must be performed regularly. Guarantee claims can be recognized only if this work is performed regularly and properly. Failure to perform the prescribed maintenance work can lead to accidents! The user of the chain saw must not perform maintenance work which is not described in the instruction manual.
Service, spare parts and guarantee Maintenance and repair The maintenance and repair of modern engines as well as all safety devices require qualiÞed technical training and a special workshop equipped with special tools and testing devices. Any work not described in this Manual may be performed only by a DOLMAR service centre. The DOLMAR service centres have all the necessary equipment and skilled and experienced personnel, who can work out costeffective solutions and advise you in all matters.
Trouble shooting Malfunction System Observation Cause Chain does not run Chain brake Engine runs Chain brake actuated. Engine does not start or only with difÞculty Ignition system Ignition spark Malfunction in fuel supply system, compression system, mechanical malfunction.
Extract from the spare parts list PS-350 S, 350 SC PS-420 S, 420 SC Use only original DOLMAR parts. For repairs and replacement of other parts, see your DOLMAR service centre.
Extract from the spare parts list Use only original DOLMAR parts. For repairs and replacement of other parts, see your DOLMAR service centre. Pos.DOLMAR-No. Qty.
EU Conformity Declaration The undersigned, Tamiro Kishima and Rainer Bergfeld, as authorized by DOLMAR GmbH, declare that the DOLMAR machines, Type: 194, 195 Chain saw PS-350 S, PS-350 SC (194) PS-420 S, PS-420 SC (195) EU prototype test certiÞcate No. M6T 09 10 24243 106 M6T 09 10 24243 106 manufactured by DOLMAR GmbH, Jenfelder Str. 38, 22045 Hamburg, Germany, conforms to the basic safety and health requirements of the applicable EU Directives: EU Machinery Directive 2006/42/EG.
To Þnd your local distributor, please visit www.dolmar.com DOLMAR GmbH Postfach 70 04 20 D-22004 Hamburg Germany http://www.dolmar.com SpeciÞcations subject to change without notice Form: 995 701 352 (4.
