STIHL OILOMATIC RAPID Micro Harvester (RMH) Instruction Manual
Contents
1. 5 5 vin YN gt m Introduction Contents 1 The Right Choice STIHL Harvester Saw Chain 2 2 Safety Precautions and General Information 3 3 STIHL Harvester Saw Chain 5 4 Spare Parts ee nee D A 1 The Right Choice STIHL Harvester Saw Chain STIHL harvester chains are precision made in STIHL s Switzerland based factories These chains are produced on special machinery custom designed and built by SIIHL STIHL has determined the ideal material mix for every component of the chain Meticulous production processes and strict quality controls combined with proper chain maintenance ensure less friction for smooth operation and a long wear life This STIHL Harvester Chain Manual was created for and is provided to STIHL Dealers and owners operators of harvester equipment utilizing STIHL chain in the cutting attachment This manual provides information that when followed results in a properly sharpened and well maintained harvester chain Good cutting performance positively contributes to the service life of the cutting attachment However the design and power of the drive unit the quality condition of the harvester guide bar along with working technique are also factors impacting harvester performance EN 00 O N TT E STIHL OILOMATIC System of Chain Lubrication2. 0 mm 0 080 in 2 0 mm 0 080 in Depth gauge setting 1 5 mm 0 059 in 1 0 mm 0 039 in Chain speed 40 m s 131 23 ft sec 40 m s 131 23 ft sec Driving power harvester head 40 kW 54 38 bhp 65 kW 87 17 bhp Sharpening angle 30 30 Side plate angle TS 75 Identification H stamped in area of depth gauge HS stamped in area of depth gauge 3 2 Technical Data Physical properties Tensile strength 12000 N 15000 N Kerf 8 9 mm 0 350 in 10 1 mm 0 398 in Operating properties Guide bar oil flow rate min 900 cm3 h 54 2 cu in hr 1200 cm3 h 73 2 cu in hr max 1800 cm3 h 109 8 cu in hr 2400 cm3 h 146 5 cu in hr Power min 10 kW 13 4 bhp 20 kW 26 8 bhp max 45 KW 60 4 bhp 65 kW 87 2 bhp Guide bar feed load at center min 100 N 250 N max 700 N 1000 N recommended 600 N 900 N Saw chain speed min 20 m s 66 ft sec 20 m s 66 ft sec max 40 m s 131 ft sec 50 m s 164 ft sec recommended 40 m s 131 ft sec 40 m s 131 ft sec 3 STIHL Harvester Saw Chain 3 3 Saw Chain Reels 2 2 gt 9 i9 J eae 40 STIHL RAPID Micro Harvester 3996 40 RMH 7 6 m 25 ft 370 2 0 mm 0 080 in 3996 000 0370 40 RMH 13 2 TRI UA 740 2 0 mm 0 080 in 3996 000 0740 40 RMH 30 4 m 100 ft 1480 2 0 mm 0 080 in 3996 000 1480 40 STIHL RAPID Micro Harvester Special 3620 40 RMHS 2 a m 28 U 370 2 0 mm 0 080 i
3. Chain lubrication has a decisive influence on the service life of a chain The patented OILOMATIC principle of chain lubrication extends the useful life of the chain guide bar and chain sprocket Unlike conventional chains each drive link of STIHL OILOMATIC saw chain incorporates an oll channel which is angled upwards and backwards E T OQ Y e e e 2 Safety Precautions and General Information 2 1 Safety Precautions for working with mechanical timber harvesting machines Saw chain breakage and thrown parts of chain called chain shot chain shot is the term commonly used by manufacturers as well as forestry professionals to describe the parts of the chain that are thrown through the air when a chain breaks These harvester machines impose a very heavy load on the cutting attachment For this reason it is necessary to observe the notes and instructions on reducing the risk of chain breakage and possible injury It is important you read and understand the instruction manual before using your machine for the first time and keep it in a safe place for future reference Non observance of the safety precautions may result in serious or even fatal injury Observe all applicable safety regulations standards and ordinances The following information is intended to supplement the machine specific instruction manual but not replace it Position the guide bar and chain so that parts are not throw
4. ce has been increased by patented asymmetric shape of toe and heel This results in considerably reduced pressure on the cutters for a longer wear life Identification Each cutter is marked with HS just below the depth gauge 3 STIHL Harvester Saw Chain Tie straps 40 RMH symmetrically shaped running faces The tie straps are non directional 40 RMHS Wear surface is increased by asymmetrically shaped running faces This greatly reduces the pressure on the tie straps and prolongs the service life of the chain Owing to the different sizes of the running faces the tie straps are directional i e there are left hand and right hand tie straps Drive links The drive links are reinforced in the area of the rivet holes The part of the drive link that runs in the bar groove the tang Is stepped 2 0 mm 0 080 in drive link gauge Reduced stress All heavily stressed parts of the STIHL RMHS have been specially strengthened This means that the forces acting RMH RMHS on the drive links tie straps cutters and rivets can be better spread over the whole chain The strengthened STIHL RAPID Micro Harvester Special RMHS therefore has an up to 70 96 longer service life than conventional harvester chains with a 2 0 mm 0 080 in drive link gauge 3 STIHL Harvester Saw Chain 3 1 Specifications Marketing number 40 RMH Type 3996 40 RMHS Type 3620 Chain pitch 404 404 Drive link gauge 2
5. erformance factors such as feed force chain speed chain sharpness sprocket condition and guide bar integrity A chain speed of 40 m s 131 23 ft sec should not be exceeded when using STIHL Harvester Chain 2 3 Before using for the first time changeover from other saw chains to the STIHLRAPID Micro Harvester Special RMHS The 404 RMHS chain has wide running faces to reduce the load on the chain guide bar and sprocket In order to utilize the benefits of the chain s wide running faces and thus extend service life it is necessary to check that the widths of the running faces on the chain guide bar rails and chain sprocket match Narrower saw chains cause a narrower wear pattern on the guide bar and chain sprocket If the new 404 RMHS chain is mounted on a bar worn in such a way the edge pressure will be increased This would result in excessive wear or damage on the new chain It is recommended that a new chain sprocket and a new guide bar be installed with the new chain to ensure optimum break in and operation Instead of a new guide bar the rails of a used guide bar can be deburred 3 STIHL Harvester Saw Chain A harvester chain is subjected to extremely high loads during operation The individual parts of the chain are exposed to constantly alternating tensile forces which can result in cracks and finally cause the chain to break The STIHL RAPID Micro Harvester RMH and STIHL RAPID Mic
6. n 3620 000 0370 40 RMHS 155 72 tni 740 2 0 mm 0 080 in 3620 000 0740 4 Spare Parts 40 STIHL RAPID Micro Harvester 3996 5x right hand cutter 1 3996 007 1000 Right hand cutter kit DI 6 5x left hand cutter 2 3996 007 1001 Left hand cutter kit 5x right hand preset tie strap 5 3996 660 6020 e ssi I 12x tie strap without rivet S 12x preset tie strap 6 3996 662 1050 Drive link kit 10x drive link 7 40 STIHL RAPID Micro Harvester Special Type 3620 5x right hand cutter 1 3620 007 1000 Right hand cutter kit bx left hand preset tie strap 6 5x left hand cutter 2 3620 007 1001 Left hand cutter kit 5x right hand preset tie strap 2620 660 6000 12x tie strap without rivet 3 12x preset tie strap 6 3620 662 1050 Drive link kit 10x drive link 7
7. n in the direction of the operator The timber harvester s cab should be equipped with appropriate safety windows Achain speed of 40 m s 131 23 ft sec must not be exceeded when using STIHL RAPID Micro Harvester saw chains RMH RMHS The area around the chain sprocket must be fitted with a suitable guard m Make sure that bystanders keep a minimum distance of 70 m 230 ft from the harvester when it is in cutting operations Inspect the chain regularly for damage do not continue working with a damaged chain replace a damaged chain or replace chipped cutters and other damaged parts of the chain STIHL recommends the use of original STIHL replacement parts for repairs do not install used parts Repairing the chain with used or non OEM parts could cause a premature failure resulting in severe injury or death and possible damage to the machine components STIHL recommends that the complete saw chain must be replaced after it has broken twice m Always resharpen STIHL chains to factory specifications Make sure the chain is always properly tensioned Replace the chain sprocket as soon as it shows any visible signs of wear A specific wear depth that can be measuered to 0 6 mm 0 025 in indicates that the sprocket needs replacement It is recommended that a sprocket should be replaced after the use of 10 chains 2 Safety Precautions and General Information m When the chain is runni
8. ng no persons may stand at the same level as the guide bar STIHLRAPID Micro Harvester chains are approved for use on timber harvesters only They must not be used on handheld chain saws or for any other purpose The components of the cutting attachment must match i e chain pitch and drive link gauge STIHL recommends that chain links chain drivers and chain cutters be inspected for cracks and other damage before the chain is placed into use before maintenance procedures such as sharpening or repair are initiated m STIHL recommends that machine operators check with a labor or industries representative i e OSHA and or timber harvesting machine manufacturer in regards to required guarding and appropriate windshield thickness on harvesting machinery using chain 2 2 General information The guide bar and chain must always be well lubricated at the proper oil flow rate STIHL recommends the use of STIHL Bar amp Chain Oil or a comparable quality bar and chain oil In colder temperatures use a STIHL Winter Grade Bar amp Chain oil or a comparable quality winter grade oil of another manufacturer Never use hydraulic oils for lubrication of the chain and guide bar Higher chain speeds result in increased wear which negatively impacts service life of the chain and bar and increases the potential for chain breakage and possible injury Always monitor the factors that influence chain performance Influencing p
9. ro Harvester Special RMHS have been specifically developed to withstand the continuous high loads imposed in highly mechanized timber harvesting operations All parts of the chain have been strengthened to greatly minimize the risk of cracks while maintaining the same high cutting capacity STIHL RAPID Micro Harvester RMH _ STIHL RAPID Micro Harvester Special RMHS STIHL harvester chains are designed for professional applications under the toughest of operating conditions STIHL harvester chains are available in two versions STIHL RAPID Micro Harvester RMH and STIHL RAPID Micro Harvester Special RMHS Cutters Semi chisel chain with slim straight sided cutter The narrow cutter shape reduces cutting resistance Depth gauge setting is 1 5 mm 0 059 in Tie straps and drive links The reinforced tie straps drive links and rivets are rated to take account of the high driving power of harvesters and the resultant high loads imposed on the chain Reduced distance between tie straps increases flexural strength and reduces the risk of chain breakage Identification Each cutter is marked with H just below the depth gauge Cutters Semi chisel chain with slim straight sided cutter The offset depth gauge makes this a smooth running chain As a result the risk of chain breakage is greatly reduced and service life is extended Depth gauge setting is 1 0 mm 0 039 in Sliding surfa
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